Solid fuel product

a solid fuel and product technology, applied in the field of solid fuel briquettes, can solve the problems of industrial fuels, especially coal and wood, being susceptible to degradation, and prone to loss of heat value,

Inactive Publication Date: 2016-09-08
Z DUST GRP INC
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Industrial fuels, especially coal and wood, are susceptible to degradation from exposure to natural elements.
These fuels can lose significant heat value when their moisture content increases.
Wood is especially susceptible to losing heat value because wood reabsorbs moisture from the surrounding environment very soon after it is dried.
Retaining the heat value of such fuels becomes even more difficult during cold temperatures, as the fuels are susceptible to freezing.
Further, the elements, such as wind, can adversely impact the storage of these industrial fuels.
Many conventional technologies for controlling heat value losses are not only expensive but also harmful to the environment, since the technologies themselves require additional energy to operate.
Although plastics, as fuel, have great potential to act as a heat source, to date there has been limited success in using plastics as a heat source.
Further, large industrial fuel plants cannot easily adapt to using plastics in high volume.
Despite being able to efficiently generate power for many additional years without major modifications and / or reconstruction, the tightening of air emission standards have rendered many small scale industrial plants, such as power generator stations, obsolete.
The decline in these types of power generator stations can adversely impact the environment, as well as the economy in many localities.
Further, the large scale industrial power plants have to be built further away from urban centers because of their large sizes.
This, in turn, can result in an increase in unemployment since the smaller power plants offer good employment opportunities in the more populated urban centers.
Unless small scale industrial power plants can be configured to utilize cleaner fuels, they risk becoming obsolete.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Solid fuel product
  • Solid fuel product
  • Solid fuel product

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0032]Bituminous coal having a heat value of approximately 9,000 Btu's per pound and a moisture content of 19% was used to prepare a solid fuel product having a heat value of approximately 12,000 Btu's per pound along with a high durability and water resistance, as per an end user's specifications.

[0033]To formulate the desired bituminous coal so as to meet the end user's specifications, the bituminous coal was chemically dried, such as by mixing the bituminous coal with less than 5% by weight of Type 1 Portland cement in the mixer. The bituminous coal was mixed with the Portland cement at high intensity for approximately thirty seconds and then at low intensity for an additional thirty seconds so as to produce the output. The output was discharged into the heater where the discharge was heated to a suitable temperature, such as approximately 100° C. The product was then discharged and stored in the insulated containment bin, where the heat of the insulated containment bin was regul...

example 2

[0037]Sub-bituminous coal having a heat value of 8,500 Btu's per pound and a moisture content of 27.5% was used to prepare a solid fuel product having a reduced moisture content, such as for improved operating efficiency, and a lower dust release in storage and handling systems. The Btu limit was extended to approximately 13,500 Btu's per pound. The solid fuel product was formulated to meet the end user's preference for better water absorption resistance.

[0038]To formulate the desired sub-bituminous coal so as to meet the end user's specifications, the sub-bituminous coal was chemically dried by mixing the sub-bituminous coal with less than 5% by weight of Type 1 Portland cement in the mixer. The sub-bituminous coal was mixed with the Portland cement at high intensity for approximately thirty seconds and then at low intensity for an additional thirty seconds so as to produce the output. The mixer output was then discharged into the heater where the discharge was heated to a suitable...

example 3

[0042]Construction and Demolition (C&D) wood debris having a heat value of 7,100 Btu's per pound, at a moisture content of approximately 15% was used to prepare a solid fuel product having a heat value of approximately 8,600 Btu's per pound. This product was targeted for a small stoker bed boiler that failed to operate with wet biomass handling related problems. Unlike those wood chips, the briquettes formed according to the present teachings showed less than a 1% moisture gain after outdoor storage of more than thirty (30) days, less than a 2.0% moisture gain after a twenty-four hour soak in distilled water, and less than a 0.01% weight loss due to breakage after being dropped from fifty feet, as per an end user's specifications, see Table.

[0043]To prepare the solid fuel product so as to meet the end user's specifications and cost requirements, the locally available C&D wood was screened mechanically and magnetically before passing through a chipper with a ⅜ inch round hole screen....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
temperatureaaaaaaaaaa
temperaturesaaaaaaaaaa
temperaturesaaaaaaaaaa
Login to view more

Abstract

A solid fuel product can include a carbon based solid fuel, a cementitious material, and a plastic material. The carbon based solid fuel can include coal, petroleum coke, wood and / or other carbon products. The cementitious material can include Portland cement, lime, calcium aluminate cement, natural cement, slag cement, blended cement, cement kiln dust, lime kiln dust, and / or fly ash. The plastic material can include a thermoplastic material and / or a thermoset material. The solid fuel product can include about 45% by weight to about 98% by weight of the carbon based solid fuel and about 1% by weight to about 50% by weight of the plastic material.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Patent Application Ser. No. 62 / 128,942, filed Mar. 5, 2015.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention generally relates to solid fuels, and, more particularly, to fuel briquettes designed to reduce emissions, improve handling, and / or increase the heat value of carbon based solid fuels.[0004]2. Description of the Related Art[0005]Industrial fuels, especially coal and wood, are susceptible to degradation from exposure to natural elements. These fuels can lose significant heat value when their moisture content increases. Wood is especially susceptible to losing heat value because wood reabsorbs moisture from the surrounding environment very soon after it is dried. Retaining the heat value of such fuels becomes even more difficult during cold temperatures, as the fuels are susceptible to freezing. Further, the elements, such as wind, can adverse...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(United States)
IPC IPC(8): C10L5/40C10L5/44C10L5/48C10L5/04
CPCC10L5/406C10L5/04C10L5/442C10L2290/143C10L2290/24C10L2290/06C10L5/48C10L5/40C10L9/10C10L2290/32Y02E50/10Y02E50/30C10L5/14C10L5/361C10L2290/141
Inventor FAIR, JEFFDAILEY, STEVE
Owner Z DUST GRP INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products