The Coffee Roasting Problem

If you’ve ever roasted coffee before, there’s a good chance that you’re familiar with the regular emissions of the roasting process first-hand. This combination of VOCs, CO2, NOx, CO, and suspended particulates is not only smoky and smelly, but it can also do serious damage to the brand and local reputation of a well-meaning coffee roaster.

The last thing you want to worry about when you’re roasting coffee is negatively affecting neighbouring businesses or – even worse – violating air quality regulations which could lead to your coffee roasting operation being shut down.

We’re here to help.

The Afterburner Solution

The solution to these coffee roasting problems is an effective afterburner.

At its core, an afterburner uses high temperature and combustion during the roasting process to create a cleaner emission and remove unpleasant odors.

It’s a superior pollution control device that keeps roasters operating within environmental regulations while maintaining the quality roast that they expect.

Meet the Smoke Dog Afterburner

An afterburner is the most effective tool to prevent costly litigation and shutdowns from troublesome roasting emissions. It’s a superior pollution control device that keeps roasters operating within environmental regulations while maintaining the quality roast that they expect.

At Inproheat Industries, we have designed the Smoke Dog afterburner to be fully-compliant with environmental standards. It will be the most effective investment you can make as a coffee roaster to prevent complaints and costly litigation.

By purchasing a Smoke Dog afterburner, you can rest assured that your roasting operation will be fully-compliant and operating at maximum efficiency.

Ready to find out more? Get in touch and find out if the Smoke Dog is right for your roasting operation.

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A cup of coffee is only as good as the roasting operation behind it.

For coffee roasters, one of the most important decisions to make is how to remove harmful pollutants produced during the coffee roasting process.

In our last post, we examined different product alternatives to afterburners that can create a cleaner roast. This time, we will re-visit afterburners and look at the specific benefits and drawbacks of each type. Each afterburner is offered by Inproheat Industries through our line of Smoke Dog afterburners.

Here’s a closer look at each afterburner.

Catalytic Afterburner / Thermal Oxidizer

The Pros:

  • First of all, catalytic afterburners operate on natural gas or propane.
  • They offer low to medium operating costs due to low gas prices and the advantage of a catalytic advantage.
  • Additionally, they are highly adaptable to larger coffee roasting operations.
  • Compared to traditional afterburners, catalytic models also use less gas.
  • Where emissions are concerned, this model eliminates nearly all smoke, odor, and VOCs.
  • In environmentally-strict areas like Los Angeles or Seattle, catalytic afterburners are effective compliant pollution control devices.
  • Finally, low NOx can be enabled on catalytic models.

The Cons:

  • The catalytic element creates backpressure, which negatively affects the roasting system.
  • Over time, catalytic elements age and lose their ability their emission control efficiency.
  • Furthermore, replacing catalytic elements is a large capital expense.
  • Another consideration is that the weight of catalytic afterburners makes roof-mounted installations challenging.
  • There is a high up-front purchasing cost for catalytic models.
  • Lastly, advanced venting and electrical efforts are needed, along with industrial controls.

Traditional Afterburner/Thermal Oxidizer

The Pros:

  • Traditional afterburners operate on natural gas or propane.
  • Additionally, they boast medium operating costs and low gas prices.
  • For larger operations, traditional afterburners are highly flexible.
  • They eliminate over 99% of smoke, odor and VOCs.
  • They comply with environmentally-strict areas like Los Angeles and Seattle.
  • Traditional afterburners can be built with low NOx capabilities.
  • There is zero backpressure, which allows for a consistent roasting operation.
  • Traditional models require low maintenance.
  • They carry long lifespans.

The Cons:

  • Traditional afterburners produce combustion byproducts like CO2.
  • As well, there is a medium upfront purchasing cost.
  • Additionally, they leave a large footprint.
  • Finally, they require moderate venting and electrical installation efforts to go with basic industrial controls.

Recuperative Afterburner/Thermal Oxidizer

The Pros:

  • Recuperative afterburners use natural gas or propane for operation.
  • They also boast low operating costs thanks to low current gas prices.
  • The larger the roasting operation, the greater the increase for investment returns.
  • They eliminate over 99% of VOCs, smoke, and odor.
  • Recuperative afterburners comply with strictly-regulated cities like Seattle or Los Angeles.
  • They can feature low NOx capabilities.
  • Recuperative models produce no backpressure, which delivers a consistent roast.
  • They need only a medium amount of maintenance.
  • Furthermore, recuperative afterburners possess long lifespans.
  • The return on investment for recuperative afterburners is as low as 1.5 years.
  • Lastly, they produce less combustion byproducts than traditional afterburners.

The Cons:

  • They carry higher up-front costs to purchase.
  • For smaller sizes, the return on investment is noticeably lower.
  • Recuperative afterburners are heavy and are not intended for all rooftops.
  • Owners must plan for the expense of eventually replacing a recuperative afterburner’s heat recovery banks.
  • Finally, advanced venting and electrical efforts are required for installation along with advanced industrial controls.

Ultimately, it’s up to the roaster to decide the most important factors for their operation. Roaster size, area of operation, budget, and future capacity plans are just a few critical considerations. At Inproheat Industries, we work with coffee roasting clients to determine exactly which type of Smoke Dog afterburner is best.

Ready to adopt your own Smoke Dog afterburner? Talk to our sales department!

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Coffee roasting

Smoke and odor arise naturally as a result of the coffee roasting process, leading to pesky problems. For roasters, finding the right solution requires careful analysis as each option has a unique advantages and drawbacks.

At Inproheat, we develop Smoke Dog afterburners (or thermal oxidizers) to reduce smoke and odor for roasters in the coffee and food industries. An efficient afterburner reduces and even eliminates smoke and odor, but what other options are available and how do they compare to afterburners?

In this post, we’re going to outline the pros and cons of air filtration systems, which are known alternatives to afterburners.

As food roasting often involves coffee, nuts, or fish, let’s break up the two main components involved in the roasting process.

First of all, roasting produces smoke. This is often dark black or light grey in colour and contains suspended particles, unburnt hydrocarbons, greenhouse gases and VOCs.

Secondly, roasting produces odor – which has no visible spectrum.

Interestingly enough, the critical difference between these two roasting components relates to our own human senses. Smoke concentrations have to be somewhere in the parts per millions to be detected by the human eye. By comparison, odor is much less concentrated – somewhere in the parts per billions – and still be detectable.

By using air filtration methods, roasters reduce smoke and odor to varying degrees, depending on exactly which system they are using.

Here’s a look at the benefits and drawbacks of several air filtration systems.

Filter Scrubbers

The Pros:

  • Cost-wise, filter scrubbers are an inexpensive upfront investment.
  • On the set-up front, they install easily.
  • Filter scrubbers benefit very small roasting operations.
  • Where the environment is concerned, there is no direct greenhouse gas generation.

The Cons:

  • Disappointingly, filter scrubbers have short lifespans and need replacement when an element is full.
  • In addition, backpressure from filters negatively affect the roasting process.
  • As well, the roasting odor is not fully eliminated from using them.
  • Furthermore, discarded filters generate waste.
  • Also, filter scrubbers fail to eliminate roasting-related VOCs.
  • Lastly, they are not compliant pollution-control devices in areas with stringent emission laws like Los Angeles or Seattle.

Electrostatic Filters

The Pros:

  • Electrostatic filters use electricity, so they generate no direct greenhouse gases.
  • For maintenance, there are simple controls with basic venting and electrical components.
  • On smoke removal efficiency, they remove approximately 80% of smoke particles.
  • In terms of odor removal, they reduce some without removing it all.
  • Cost-wise, they carry a medium up-front cost.
  • For roasters surrounded by neighboring businesses, electrostatic filters offer great technology to keep them happy.
  • As for durability, these products possess a long lifespan.

The Cons:

  • First off, electrostatic filters require elemental cleaning ranging from daily to weekly.
  • Also worth noting, larger models with increased duty do not fully eliminate smoke.
  • Without proper motivation, backpressure from filters has a poor effect on the roasting process.
  • Additionally, they reduce without fully eliminating odor.
  • Unfortunately, they do not eliminate VOCs.
  • Finally, electrostatic filters do not comply with pollution control laws in environmentally-stringent markets like Los Angeles or Seattle.

Wet Scrubbers

The Pros:

  • For controls, they are simple to operate with a basic venting and electrical set-up.
  • Concerning cost, they boast a medium up-front and low operating cost.
  • In terms of environmental impact, wet scrubbers generate no direct greenhouse gases because they use electricity.
  • As a final benefit, micro level wet scrubbers are scalable.

The Cons:

  • Most notably, scrubbers create waste water during the roasting process. Waste water’s harmful contaminants require specific disposal procedures.
  • In addition, these products don’t fully eliminate smoke and odor.
  • Furthermore, they do not eliminate VOCs.
  • Unfortunately, in environmentally-strict markets, scrubbers do not comply to emission laws and regulations.

In conclusion, air filtration systems are best-suited to smaller roasting operations in markets with more relaxed emission bylaws. Because of their low cost and basic operation , they have their own appeal.

Ultimately, roasters need to weigh these benefits against drawbacks like regular cleaning, waste water creation, and the failure to completely eliminate smoke, odor, VOCs.

Our next blog post will examine the different variations of afterburners and their respective pros and cons.

Interested to know more about Smoke Dog afterburners by Inproheat? Get in touch! Contact us to discuss your roasting operation and discover our afterburner products.

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A coffee roaster at Bean Around the World

Throughout this website, you will find a lot of information about one of Inproheat’s flagship products, The Smoke Dog Afterburner.

For new coffee roasters who are just learning about the process, there is a common question that comes up.

What is an Afterburner?

The basic function of an afterburner is to remove unwanted emissions and odors from a manufacturing operation.

Businesses use afterburners in a variety of industries – not just the coffee industry – to treat emissions through a process called thermal oxidization. It’s worth noting that an afterburner is also commonly referred to as a thermal oxidizer or a T.O. for short.

Coffee roasting produces dark and smoky emissions with a variety of pollutants, many of which – such as VOCs, CO2, NOx, and CO – harm the environment. As a result, these pollutants need proper treatment. Sometimes, these odors can negatively impact coffee roasters and neighboring businesses, which can result in coffee roasters closures due to violations of by-laws and local and state regulations.

An effective afterburner oxidizes the waste gases from roasting – using the combustion process to generate a much cleaner emission. In summary, an afterburner is a pollution control device that allows roasters to comply with environmental regulations without sacrificing the quality of their roast.

How do Afterburners work?

The basic principles of thermal oxidization are three Ts: Time, Temperature, and Turbulence.

Time is critical as pollutants must be held long enough in the combustion chamber to complete full combustion.

The second T – temperature – links directly to adequate smoke and odor removal. In order to achieve this temperature, a gas-fired burner is used. In most cases, coffee roasting smoke begins dissipating at approximately 800-900 degrees Fahrenheit inside the oxidizer. However, the complete oxidization of pungent coffee odor is more challenging and needs a minimum heat of 1250 degrees Fahrenheit.

Lastly, the creation of good quality turbulence inside the combustion chamber is crucial. Increased turbulence improves mixing of the pollutants with the combustion air to generate the highest possible afterburner efficiency.

How does the Smoke Dog Afterburner help?

The Smoke Dog Afterburner from Inproheat offers coffee roasters – and those in other industries that require afterburners – a proven solution. Using an innovative design, the Smoke Dog delivers the three Ts of thermal oxidization with powerful efficiency.

The Smoke Dog Afterburner for Coffee Roasters

First, each Smoke Dog model holds pollutants in the combustion chamber long enough for full removal. Our Artisan and Standard models offer an on/off control panel, making this process even simpler for roasters to operate.

Our afterburner models comply with California emission laws – among the strictest in the world. To keep that promise, The Smoke Dog models reach an internal heat of 1250 degrees Fahrenheit, thereby eliminating 99.9% of visible smoke and odor. Optional low NOx burners are also available on our models.

Finally, Inproheat afterburners optimize turbulence during the oxidization process, increasing the efficiency of the overall process. If that’s not enough, the newest Recuperative Smoke Dog afterburner with GreenCycle technology recovers heat while roasting – effectively increasing efficiency and lowering operating costs as a result.

The Smoke Dog afterburner is a must-have for today’s coffee roasters. It lives up to everything that an effective afterburner should be.

Interested in adopting your own Smoke Dog afterburner? Please contact our sales department.

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A rendering of a recuperative afterburner for coffee roasters with GreenCycle technology by Inproheat Industries.

The coffee roasting industry is a community that is known for being environmentally-conscious. In keeping with this philosophy, Inproheat makes a constant effort to create afterburners that carry equal environmental and economic rewards.

At this year’s Specialty Coffee Expo, Inproheat introduced the newest addition to its afterburner family – a recuperative model that uses a new innovation we call GreenCycle. Let’s take a closer look.

The GreenCycle Concept

The original Smoke Dog afterburner was built to remove coffee roasting smoke and odor at the flagship location of Bean Around the World. After more than 200 other roaster installations across North America, the positive results of this afterburner are indisputable. Inproheat’s newest oxidization milestone – GreenCycle – enhances the original model with a new emphasis on heat recovery.

GreenCycle Rewards

Inproheat’s Recuperative Smoke Dog afterburners utilize GreenCycle technology in the form of heat recovery banks. During the roasting process, these banks recover and then reheat roasting exhaust, thereby reducing overall fuel consumption by 60% when compared to traditional afterburners.

Coffee roasters who purchase a recuperative afterburner will see two immediate rewards – lower operating costs and increased efficiency. As a direct result of the reduced overhead, these coffee roasters can invest in other business areas with less burden.

An Exciting Next Step

Inproheat’s recuperative Smoke Dog afterburners appeal primarily to larger coffee roasters, however the variety of configuration options available keeps them versatile across different types of operations. More than anything else, they match well with roasters who want a smaller carbon footprint while maximizing the return on their roasting equipment investments.

For Inproheat, the launch of GreenCycle technology is especially relevant. First of all, it fits in with the environmentally-conscious and efficient history of the Smoke Dog afterburner. Additionally, it marks a new milestone for Inproheat in the coffee roasting industry as a whole.

Are you curious to know more? Learn about GreenCycle technology and Inproheat’s recuperative afterburners by contacting us.

Watch for more updates about this model in the months ahead.

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The Inproheat Industries display for the Smoke Dog Afterburner at the 2017 Global Specialty Coffee Expo.

It’s an exciting time for Inproheat Industries and the Smoke Dog afterburner.

For the second year in a row, Inproheat representatives attended the Specialty Coffee Association of America Global Specialty Coffee Expo in Seattle, Washington.

This event brings together all corners of the coffee industry to interact in a welcoming environment.

New Opportunities for Inproheat

The 2017 SCAA Global Specialty Coffee Expo was the first opportunity for Inproheat to present its Smoke Dog afterburner technology through its own dedicated booth. As such, the company shared the concept and history of the Smoke Dog afterburner. Inproheat described the efficient features of The Smoke Dog and international client testimonials with coffee roasters, industry thought leaders, and trade publications that cater to the coffee industry.

Overwhelming Support

Inproheat’s Smoke Dog afterburner presentations earned overwhelming support from attendees at the SCAA Global Specialty Coffee Expo. Coffee roasters were especially impressed with the tried and true solutions that Smoke Dog afterburners can offer. The wide compatibility and international compliance of Smoke Dog afterburners was also positively received. As an added bonus, environmentally-conscious roasters were very pleased by Inproheat’s presentation of its Recuperative Smoke Dog Afterburner. This new model features our GreenCycle heat recovery bank technology – another innovative milestone for Inproheat – which offers higher energy efficiency and savings for roasters.

Looking to the Future

In conclusion, the 2017 SCAA Global Specialty Coffee Expo proved to be successful for Inproheat Industries. As a company, we learned from the people in the coffee industry while those in attendance learned from us. As the coffee industry moves ahead with increased technology and innovation, Inproheat is a key player. So what’s next? While the industry evolution continues, the Smoke Dog afterburner will be taking more exciting steps forward.

Do you want an afterburner for your coffee roasting operation? Get in touch with us!

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Coffee Roasters at the 2016 Roasters Guild Retreat

Inproheat Industries prides itself on forming strong relationships with coffee roasters. Our first Smoke Dog afterburner, created for Bean Around the World, introduced Inproheat to the coffee roasting industry. Since then, we have been giving back through products and industry participation.

Inproheat has been celebrating 25 years of building afterburners by attending some of the industry’s most celebrated events. With that in mind, we were delighted to attend the 2016 Roasters Guild Retreat at the Lake Lawn Resort in beautiful Delavan, Wisconsin.

The Roasters Guild Retreat has been an annual event for over 15 years. It brings out American coffee roasters, Canadian coffee roasters, and international coffee roasters. As a result, new industry connections are made while solutions are explored for handling current industry challenges. Based on that, the retreat offers a combination of educational and social events, providing a balance of learning and fun.

Giving Back to Coffee Roasters

Inproheat sponsored a social keg events at the Roasters Guild Retreat, which gave us a great opportunity to give back to the coffee roasting industry. Since the release of our Smoke Dog afterburner over 25 years ago, Inproheat has emphasized the importance of building strong partnerships with coffee roasters around the world. As a result, our partnerships have continued to grow.

Our attendance at the retreat offered some great industry insights, including a peek at the latest equipment on display. Most of all, it connected us with roasters and thought leaders within the Specialty Coffee Association of America.

Coffee roasting equipment at the 2016 Roasters Guild Retreat

Building Industry Solutions for Coffee Roasters

Coffee roasters face increasing pressure in their roasting operations, especially to reduce visible plume and odour. Due to new restrictions on CO and NOx levels, there is a greater demand for products that can meet these requirements. With that in mind, the Smoke Dog afterburner complies with California’s stringent emission regulations. As a result, it offers peace of mind to roasters and consumers alike.

Inproheat Smokedog Afterburner

Watch for Inproheat at the 2017 Roasters Guild event, where we will be sharing our upcoming innovations for the Smoke Dog.

In conclusion, we’d like to thank the Specialty Coffee Association of America for the opportunity to attend.

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The city of Atlanta

Coffee equipment manufacturers, coffee roasters, and coffee consumers shared the spotlight at the 2016 SCAA Expo in Atlanta, Georgia.

A Place for Expertise and Sustainability

Taking place at the Georgia World Congress Center, the expo took place over a 4-day period. This year’s featured events included product exhibits, lectures and classes, and coffee competitions. Since it’s presented by the Specialty Coffee Association of America, this expo stands as the biggest coffee-related industry event in the world. Ultimately, the expo brings together all corners of the industry in one place with the common goal of sharing knowledge, expertise, and strategies for sustainability.

Continued Industry Evolution

Michael Panz and Myles Panz of Inproheat Industries attended the 2016 SCAA Expo with two key goals. To start with, they wanted to learned what new steps the coffee roasting industry is taking. In addition, they wanted to know the people and companies leading the charge. Ultimately, the expo helped them do just that. They made new industry contacts and learned first-hand about the current state of coffee roasting. Based on these experiences, Inproheat can now clearly define its role in the industry moving forward.

A coffee roasting operation

The Role of Inproheat

Due to the expansion of coffee roasting, Inproheat Industries’ flagship product – the Smoke Dog Afterburner – remains integral to the industry’s sustainability. Specifically designed for coffee roasters, the Smoke Dog removes all traces of smoke and odor through a seamless operation. Furthermore, the Smoke Dog complies with California’s strict environmental regulations, which are internationally-recognized for responsibility and efficiency in the coffee roasting market. As such, new coffee roasters and experienced coffee roasters can invest in the Smoke Dog and improve their operations.

The Smoke Dog Afterburner by Inproheat

Thank you to the Specialty Coffee Association of America for hosting this wonderful event! Next year’s SCAA Expo can’t come soon enough!

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