CN108977214A - A kind of rotary kiln production carbonization rice husk technique and utilization method of heat - Google Patents
A kind of rotary kiln production carbonization rice husk technique and utilization method of heat Download PDFInfo
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- CN108977214A CN108977214A CN201810874688.4A CN201810874688A CN108977214A CN 108977214 A CN108977214 A CN 108977214A CN 201810874688 A CN201810874688 A CN 201810874688A CN 108977214 A CN108977214 A CN 108977214A
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- rice husk
- degree
- kiln
- rotary kiln
- rice
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of rotary kiln production carbonization rice husk technique and utilization method of heat, it is characterized by: by the rice husk of paddy processing storage rice husk stack-up-yard, rice husk quantitative supply device is sent by rice husk transfer device, start rotary kiln for preheating temperature to 300 degree, rice husk is sent into the charring kiln of rotation through rice hull conveying device, its anoxic in closed charring kiln is carbonized, and the 550-800 degree of generation is contained into CH4、CO、H2Fuel gas carry out second-time burning, CH in burning4、CO、H2Pernicious gas burns totally, and the rice husk for spending anoxycausis through 550 degree -800 Celsius in rotation charring kiln completes reduction reaction, becomes H2The carbonization rice husk of O < 2%, C > 40%.The present invention is conducive to plant area's environment protection standard, and smoke dust discharge concentration is small in production process, reduces environmental pollution to greatest extent, energy consumption.Warming is provided, grain heat-drying, cryogenic refrigeration, hot steam, hot water have significant economic benefit and social benefit.
Description
Technical field
The invention belongs to a kind of kilns using continuous rotation to carry out charing process to rice husk, and the exhaust gas generated leads to
It crosses after special furnace second-time burning and is translated into thermal energy and is comprehensively utilized, in particular to a kind of rotary kiln produces carbonization rice husk technique
And utilization method of heat.
Background technique
Rice husk is also known as rice chaff, is the principal by product of Cereals processing, accounts for about the 20% of rice.Only by taking Liaoning as an example, have every year
No less than 8,000,000,000 jin or so of rice, in addition to part is as national reserved grain, remaining major part is being processed into rice progress inside the province
It sells inside and outside the province, tens of thousands of tons of rice husks of generation are largely made with simple process, or are single-fuel, or are feed, especially closely
The conventionally employed open earth kiln of carbonization rice husk manufacturer produces carbonization rice husk over year, or using the production carbonization of external-heat retort
Rice husk, a large amount of harmful exhaust of generation, flue dust, tar liquid etc. cannot effectively control utilization, or even be directly discharged into underground, all
High degree causes the serious pollution of atmosphere and environment, while the unordered discharge of the waste heat flue gas of these techniques generation is also made
At the loss and waste of a large amount of resource.In addition, simple utilize of rice husk is also a kind of cost pressure for cereal enterprises
Power.
Summary of the invention
The present invention overcomes above-mentioned existing defects, it is therefore an objective to for solve the environmental pollution that is generated during charred rice husk and
Generation and the wasting of resources of the 800-1200 degree temperature consumed naturally, provide a kind of in closed state in after-burning stove
Under rice husk is carbonized, and by pernicious gas oxygenation second-time burning caused by charred rice husk, by temperature be greater than 1000 degree it is complete
Gas sampling after full burning is used as heat energy utilization into Waste Heat Recovery furnace, provides a kind of rotary kiln production carbonization rice husk technique and heat
It can method of comprehensive utilization.
Rotary kiln production carbonization rice husk technique of the present invention and utilization method of heat content Description:
Rotary kiln production carbonization rice husk technique of the present invention and utilization method of heat, it is characterised in that: rotary kiln produces carbonization rice husk
Technique and utilization method of heat are:
1, the rice husk generated in paddy processing is left concentratedly in rice husk stack-up-yard, it is quantitative to be sent into rice husk by rice husk transfer device
Feeding mechanism starts rotary kiln and Rice husk burner, kiln temperature is preheated to 300 degree；
2, rice husk is sent into 300 degree of kiln temperature of charred rice husk device through rice hull conveying device；Rice in the charring kiln of rotation
Shell, anoxic carbonizes in closed charring kiln environment, and by the 550-800 degree Celsius of generation containing CH4, CO, H2 can
Combustion gas body is carbonized exhaust uptake by high-pressure suction fan and leads to the progress second-time burning of the smokeless device in charred rice husk device；
After the combustable gas concentration of second-time burning reaches combustion value, starting smokeless combustion device burns to fuel gas oxygenation, in temperature
CH4, CO, H2 pernicious gas burn totally, under the action of high-pressure suction fan, in smokeless device in the burning of 800-1200 degree
The high temperature heat that burning generates is introduced into waste heat utilization recoverer；
3, the water in waste heat utilization recoverer is heated to by the high-temperature flue gas in waste heat pipeline in waste heat utilization recoverer
80 degree, this part water is supplied to production as thermal energy, life uses；Residual gas and vapor are through exhaust blower, row in pipeline
Feed channel is discharged into air, and temperature is 80-100 degree；
4, the rice husk for spending anoxycausis through 550 degree -800 in rotation charring kiln completes reduction reaction, becomes H2O < 2%, C
The rice hull carbon compound of > 40%, rice hull carbon compound pass through the outlet of rotary kiln, cold by the cooling discharger three-level of carbide
But system is cooled to 35 degree, and the final products carbonization rice husk of carbide storage device, warp are entered after the grinding of powdered carbon grinding device
The cooling transfer device of carbide is sent into Automatic weighing and packaging machine and quantify, pack, store.
Rotary kiln production carbonization rice husk technique of the present invention and utilization method of heat, are conducive to plant area's environment protection standard, produce
Smoke dust discharge concentration is less than 100mg/m3 in the process, reduces the pollution to environment to greatest extent, reduces energy consumption.As
A kind of clean energy resource can save a large amount of electric energy, natural gas and fire coal every year for enterprise, can reduce soot emissions, reduce SO2 row
It puts, it is annual to consume rice husk without dirt, warming, grain heat-drying, cryogenic refrigeration, hot steam, hot water etc. are provided for plant area, and receive
Obtaining product-carbonization rice husk after rice husk utilizes then can be used for industry, agricultural, people's livelihood field, have significant economic benefit and society
It can benefit.
Detailed description of the invention
Fig. 1 is the process flow chart of rotary kiln production carbonization rice husk.
Specific embodiment
Rotary kiln production carbonization rice husk technique of the present invention and utilization method of heat are achieved in that with reference to the accompanying drawing
It illustrates.
See Fig. 1, the process flow of rotary kiln production carbonization rice husk of the present invention:
Rotary kiln production carbonization rice husk technique of the present invention and utilization method of heat:
1, the rice husk generated in paddy processing is left concentratedly in rice husk stack-up-yard, it is quantitative to be sent into rice husk by rice husk transfer device
Feeding mechanism starts rotary kiln and Rice husk burner, kiln temperature is preheated to 300 degree；
2, the rice husk in proportioning device is sent into 300 degree of kiln temperature of charred rice husk device through rice hull conveying device；In the charcoal of rotation
Change in kiln, carbonizes it in the state of airtight anoxia, and the 550-800 degree of generation is contained the flammable of CH4, CO, H2
Gas is carbonized exhaust uptake by high-pressure suction fan and leads to the progress second-time burning of the smokeless device in charred rice husk device；When
After the combustable gas concentration of second-time burning reaches combustion value, starting smokeless combustion device burns to fuel gas oxygenation, in temperature
CH4, CO, H2 pernicious gas burn totally, under the action of high-pressure suction fan, in smokeless device in the burning of 800-1200 degree
The high temperature heat that burning generates is introduced into waste heat utilization recoverer；
3, the water in waste heat utilization recoverer is heated to by the high-temperature flue gas in waste heat pipeline in waste heat utilization recoverer
80 degree, this part water is supplied to production as thermal energy, life uses；Residual gas and vapor are through exhaust blower, row in pipeline
Feed channel is discharged into air, and temperature is 80-100 degree；
4, the rice husk for spending anoxycausis through 550 degree -800 in rotation charring kiln completes reduction reaction, becomes H2O < 2%, C
The rice hull carbon compound of > 40%, rice hull carbon compound pass through the outlet of rotary kiln, cold by the cooling discharger three-level of carbide
But system is cooled to 35 degree, and the final products carbonization rice husk of carbide storage device, warp are entered after the grinding of powdered carbon grinding device
The cooling transfer device of carbide is sent into Automatic weighing and packaging machine and quantify, pack, store.
Rice husk of the present invention enters in charing rotary kiln by conveying device, reacts by preheating, drying, high temperature thermal decomposition,
In the hot environment spent under anaerobic condition at 550 degree -800, reduction reaction is carried out, generates light group of fuel gas CH4, CO, H2
Point and fixed carbon.
The fuel gas such as the light component being discharged from retort, by oxygenation second-time burning once again, temperature is up to 800-
1200 degree, totally, the waste heat generated in combustion process is obtained by waste heat recovery plant for CH4, CO, H2 burning during second-time burning
To recycling and being utilized respectively in production, living needs, remaining a small amount of gas and moisture are arranged through exhaust uptake after second-time burning
Out, effluent air temp is 80-100 degree, realizes energy conservation and environmental protection maximum resource utilization.
Rotary kiln production carbonization rice husk technique of the present invention and utilization method of heat, are conducive to plant area's environment protection standard, produce
Smoke dust discharge concentration is less than 100mg/m3 in the process, reduces the pollution to environment to greatest extent, reduces energy consumption.As
A kind of clean energy resource can save a large amount of electric energy, natural gas and fire coal every year for enterprise, can reduce soot emissions, reduce SO2 row
It puts, it is annual to consume rice husk without dirt, warming, grain heat-drying, cryogenic refrigeration, hot steam, hot water etc. are provided for plant area, and receive
Obtaining product-carbonization rice husk after rice husk utilizes then can be used for industry, agricultural, people's livelihood field, have significant economic benefit and society
It can benefit.Using the present invention every year can by energy conservation, economize on coal, it is water-saving, save the operating costs such as artificial, auxiliary material, maintenance as enterprise
The economic value of industry creation high repayment.
Claims (1)
1. a kind of rotary kiln production carbonization rice husk technique and utilization method of heat, it is characterised in that: rotary kiln produces carbonization rice husk
Technique and utilization method of heat are:
(1), the rice husk generated in paddy processing is left concentratedly in rice husk stack-up-yard, it is fixed to be sent into rice husk by rice husk transfer device
Feeding mechanism is measured, starts rotary kiln and Rice husk burner, kiln temperature is preheated to 300 degree；
(2), rice husk is sent into 300 degree of kiln temperature of charred rice husk device through rice hull conveying device；In the charring kiln of rotation
Rice husk, anoxic carbonizes in closed charring kiln environment, and by the 550-800 degree Celsius of generation containing CH4, CO, H2
Fuel gas is carbonized exhaust uptake by high-pressure suction fan and leads to the secondary combustion of the progress of the smokeless device in charred rice husk device
It burns；After the combustable gas concentration of second-time burning reaches combustion value, starting smokeless combustion device burns to fuel gas oxygenation, in temperature
CH4, CO, H2 pernicious gas in the burning of 800-1200 degree is spent to burn totally, under the action of high-pressure suction fan, smokeless device
The high temperature heat that middle burning generates is introduced into waste heat utilization recoverer；
(3), the water in waste heat utilization recoverer is heated by the high-temperature flue gas in waste heat pipeline in waste heat utilization recoverer
To 80 degree, this part water is supplied to production as thermal energy, life uses；In pipeline residual gas and vapor through exhaust blower,
Exhaust pipe is discharged into air, and temperature is 80-100 degree；
(4), rotation charring kiln in through 550 degree -800 spend anoxycausis rice husk completion reduction reaction, become H2O < 2%,
The rice hull carbon compound of C > 40%, rice hull carbon compound pass through the outlet of rotary kiln, cold by the cooling discharger three-level of carbide
But system is cooled to 35 degree, and the final products carbonization rice husk of carbide storage device, warp are entered after the grinding of powdered carbon grinding device
The cooling transfer device of carbide is sent into Automatic weighing and packaging machine and quantify, pack, store.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810874688.4A CN108977214A (en) | 2018-08-03 | 2018-08-03 | A kind of rotary kiln production carbonization rice husk technique and utilization method of heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810874688.4A CN108977214A (en) | 2018-08-03 | 2018-08-03 | A kind of rotary kiln production carbonization rice husk technique and utilization method of heat |
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| Publication Number | Publication Date |
|---|---|
| CN108977214A true CN108977214A (en) | 2018-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810874688.4A Pending CN108977214A (en) | 2018-08-03 | 2018-08-03 | A kind of rotary kiln production carbonization rice husk technique and utilization method of heat |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1431149A (en) * | 2003-01-28 | 2003-07-23 | 鞍山市银珠粮油有限公司 | Technique for comprehensive utilizing thermal energy of carbonized rice hulls through special heating furnace |
| CN204301079U (en) * | 2014-11-28 | 2015-04-29 | 唐长红 | A kind of rice husk carbonizing gas burner mixing chamber structure |
| CN105698170A (en) * | 2014-11-28 | 2016-06-22 | 唐长红 | Burner adopting rice hull carbonization gas for combustion supporting |
| CN108003905A (en) * | 2017-12-13 | 2018-05-08 | 兴化市荣宝油脂有限公司 | A kind of production treatment process of carbonization rice husk |
-
2018
- 2018-08-03 CN CN201810874688.4A patent/CN108977214A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1431149A (en) * | 2003-01-28 | 2003-07-23 | 鞍山市银珠粮油有限公司 | Technique for comprehensive utilizing thermal energy of carbonized rice hulls through special heating furnace |
| CN204301079U (en) * | 2014-11-28 | 2015-04-29 | 唐长红 | A kind of rice husk carbonizing gas burner mixing chamber structure |
| CN105698170A (en) * | 2014-11-28 | 2016-06-22 | 唐长红 | Burner adopting rice hull carbonization gas for combustion supporting |
| CN108003905A (en) * | 2017-12-13 | 2018-05-08 | 兴化市荣宝油脂有限公司 | A kind of production treatment process of carbonization rice husk |
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Application publication date: 20181211 |
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