CN106350116A - Traditional Chinese medicine residue gasification combustion heat supply device and method - Google Patents

Traditional Chinese medicine residue gasification combustion heat supply device and method Download PDF

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Publication number
CN106350116A
CN106350116A CN201610932497.XA CN201610932497A CN106350116A CN 106350116 A CN106350116 A CN 106350116A CN 201610932497 A CN201610932497 A CN 201610932497A CN 106350116 A CN106350116 A CN 106350116A
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China
Prior art keywords
chinese medicine
equipment
medicinal residues
flue gas
medicine residue
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郎林
吴创之
阴秀丽
潘贤齐
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Guangzhou Institute of Energy Conversion of CAS
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Guangzhou Institute of Energy Conversion of CAS
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/02Fixed-bed gasification of lump fuel
    • C10J3/06Continuous processes
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00Details of gasification processes
    • C10J2300/09Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0913Carbonaceous raw material
    • C10J2300/0916Biomass
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • Y02P20/129Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Abstract

The invention discloses a traditional Chinese medicine residue gasification combustion heat supply device and a method. The traditional Chinese medicine residue gasification combustion heat supply device comprises a traditional Chinese medicine residue pretreatment system and a traditional Chinese medicine residue gasification combustion system, wherein the traditional Chinese medicine residue pretreatment system is connected with the traditional Chinese medicine residue gasification combustion system; the traditional Chinese medicine residue pretreatment system is used for preparing traditional Chinese medicine residue formed fuel; the traditional Chinese medicine residue gasification combustion system is adopted for gasification combustion of the traditional Chinese medicine residue formed fuel. As the traditional Chinese medicine residues with high water content are treated efficiently, energy conservation and emission reduction techniques of conventional various fire coal/fuel oil/fuel gas heat supply systems can be improved with high efficiency, low cost and no pollution; as the efficiency of the system is improved, and the equipment investment cost is lowered, the environment-friendly requirements can be met, meanwhile, the production cost and the energy consumption of companies can be reduced, and the problems that a conventional traditional Chinese medicine residue treatment technique is high in treatment cost, serious in resource waste and severe in environment pollution can be solved.

Description

A kind of Chinese medicine residue char combustion heat supplying device and method
Technical field:
The present invention relates to biomass castoff processing technology field is and in particular to a kind of Chinese medicine residue char combustion heat supplying fills Put and method.
Background technology:
Growing to energy demand with society, the Fossil fuel as main energy sources source but promptly reduces. The conventional energy supply anxiety of China has had a strong impact on the fast development of social economy, and fossil energy is concentrated on a large scale Use, discharge the pollutant such as great amount of carbon dioxide, sulfur dioxide, nitrogen oxides, the living environment giving people class causes harm. In recent years with the rise of low-carbon economy, new forms of energy are become by fossil energies such as biomass Substitute coal, natural gas and oil The study hotspot in field, has important strategic importance, and countries in the world all give enough attention.Wherein, gasification of biomass skill Art is instantly to develop one of very fast and more ripe engineering technology, receives more and more attention in recent years.
Biomass gasification technology is that low-grade biomass energy rapid conversion becomes a kind of new energy of high-grade fuel gas Source technology, biomass fuel is occurred chain cracking to become co, h by gasification installation under the high temperature conditions2、ch4In flammable gas Body, the major advantage of gasification technology is after biomass are converted into fuel gas, and utilization ratio is higher and the cost that gasifies is relatively low, simultaneously Biological fuel gas of many uses, can be used as domestic gas, generating, district heating and industrial fuel etc..
Chinese medicine residue is a kind of special low-grade biomass material, is that Chinese medicinal herbses are surplus after immersion and decoction mostly Remaining plant residue.At present, China discharges about 0.12 hundred million tons of Chinese medicine residue every year, has the features such as yield is big, discharge is concentrated. But due to medicinal residues itself exist water content larger (water content be more than 80%), broad categories, nitrogen content is high, calorific value is low, perishable, Difficult degradation and abnormal smells from the patient such as are pungent at the unfavorable characteristic, using traditional landfill compost with burn the technology such as heat supply, exist processing cost high, The problems such as efficiency of energy utilization is low and disposal of pollutants is exceeded.Still lack effective process and Land use systems at present, Chinese medicine is residual Slag has become a kind of environomental pollution source, such as deals with improperly, easily produces serious negative effect to social environment.For example, Guangdong Province be the famous herbal tea of China all with southern medicine base, have that to add precious group, Li Zhu group and Guang Yao group etc. numerous domestic Esbablished corporation;But these enterprises are faced with very thorny medicinal residues and process the tired of a difficult problem and enterprise's heat cost cumulative year after year Disturb.Thus, the high efficient energy sources how realizing medicinal residues, using being general character social problem instantly urgently to be resolved hurrily, have huge diving In economic benefit and the market space.
In recent years, domestic prepare the aspects such as animal and fowl fodder, compost fermentation in medicinal residues and carried out some trials, but face medicinal residues Fermentation period length, complicated component, separate difficult and the problems such as toxicant may be contained, a large amount of processing modes of current medicinal residues are Burn, landfill and fixed area are stacked, and easily cause the wasting of resources and environmental pollution.
Content of the invention:
It is an object of the invention to provide a kind of Chinese medicine residue char combustion heat supplying device and method, in efficient process High water cut While amount Chinese medicine residue, energy-conserving and emission-cutting technology transformation is carried out to existing various fire coals/oil and gas heating system, efficient, low Cost, pollution-free, by improving system effectiveness and reducing equipment investment cost, not only can reach environmental requirement, also can drop simultaneously The production cost of low enterprise and energy consumption, solve processing cost height, the wasting of resources and the environmental pollution of existing medicinal residues treatment technology Problem.
The present invention is achieved by the following technical programs:
A kind of Chinese medicine residue char combustion heat supplying device, this device includes the medicinal residues pretreatment system being connected and medicinal residues gas Change combustion system;Described medicinal residues pretreatment system is used for preparing medicinal residues shaped fuel, pulverizes including the high moisture material being sequentially connected Machine, mechanical dewatering equipment, semi-moist materials crusher, flame filter press, flue gas drying equipment and compound stalk forming equipment;Described medicinal residues Gasification combustion system is used for the gasification, and combustion of medicinal residues shaped fuel, including the storage bin being sequentially connected, feeding device, fixed bed gas Change stove, high temperature purification device, high-temperature blower and heating equipment;Described compound stalk forming equipment connects with storage bin through conveyer;Described Fixed-bed gasification furnace is connected with slag-draining device, and residue after gasifying is delivered to lime-ash storage silo by automatic slag discharge device, then by feeding Lime-ash is added flue gas drying equipment by device, and described flue gas drying equipment is connected with multi-cyclone cleaner and waste heat recovery dress Put connection;Described waste-heat recovery device also connects with sewage-treatment plant;Height is passed through in the combustion gas that described fixed-bed gasification furnace produces Warm depurator dedusting remove defocused, by high-temperature blower by clean gas deliver to the gas pipeline of system through high temperature adjustable valve respectively with combustion Gas heating equipment is connected with flue gas drying equipment;Shown heating equipment rear end is additionally provided with waste-heat recovery device;Described waste heat returns Receiving apparatus connect fixed-bed gasification furnace through air-introduced machine;Described mechanical dewatering equipment is selected from Double helix squeezing or the multistage filter pressing of belt sets Standby;Described high moisture material pulverizer, mechanical dewatering equipment, semi-moist materials crusher, flame filter press are connected with sewage disposal dress Put;Described cyclone dust removal equipment connects with compound stalk forming equipment through conveyer device.
Especially, described semi-moist materials crusher is water mill pulverizer.
Described sewage-treatment plant includes detention tank, plate and frame type filter-press and the sewage purification system being sequentially connected.
Described flue gas drying equipment is multistage cylinder flue gas drying equipment.
Described waste-heat recovery device is room temperature soft water system.
Shown high temperature adjustable valve is moushroom valve.
Described heating equipment is the production equipment producing heat by biomass burning combustion gas, including but not limited to pot The heating equipments such as stove, kiln and heat-conducting oil furnace.
The present invention also protects a kind of Chinese medicine residue char combustion heat supplying method, using said apparatus, comprises the following steps:
1) medicinal residues crushing/dewatering: water content is that more than 80% Chinese medicine residue is crushed to average chi through high moisture material pulverizer Very little for 5-10cm, then to be dehydrated to water content through mechanical dewatering equipment be 65-75%, is finally crushed to using semi-moist materials crusher Average-size is the slurry liquid of 0.1-2.5mm;After flame filter press filtration, obtain water content is 50-55% half to slurry liquid Wet medicinal residues;The waste liquid that Chinese medicine residue crushing/dewatering produces, enters sewage-treatment plant after centralized collection;
2) medicinal residues flue gas drying: step 1) the semi-moist medicinal residues that obtain enter flue gas drying equipment through conveyer and in temperature are 400-600 DEG C of high-temperature flue gas carry out drying the half-dried medicinal residues obtaining that water content is 35%-45%;Described flue gas drying equipment Tail gas, after multi-cyclone cleaner, enters waste-heat recovery device and carries out heat exchange condensation, the condensed water obtaining enters at sewage Reason device, the non-condensable gas of generation is delivered to by air-introduced machine and is participated in reaction in fixed-bed gasification furnace;
3) medicinal residues mixed-forming: step 2) water content that obtains is that the half-dried medicinal residues of 35%-45% first enter through conveyer Raw material premix equipment, adds water content≤15%, particle diameter <biomass material of 1cm after being sufficiently mixed, then enter through conveyer Compound stalk forming equipment, is prepared into the medicinal residues shaped fuel that water content is 20%-30%;
4) medicinal residues gasification: step 3) the medicinal residues shaped fuel that obtains and water content≤25% biomass material, first by defeated Send machine to send into storage bin, then sent in biomass fixed-bed gasification furnace by feeding device;It is fixed-bed gasification furnace using aerator There is provided gasifying medium (air), gasification forms the high-temperature biomass gas that temperature is 300-600 DEG C;By high temperature purification device dedusting Except defocused, by high temperature draught fan, clean gas are delivered to the gas pipeline of system, two-way is divided into by high temperature adjustable valve and uses: one Based on road, gas pipeline connects heating equipment, carries out heat exchange condensation through waste-heat recovery device, the condensed water obtaining enters after heat supply Sewage-treatment plant, can not coagulate that flue gas is up to standard can directly to be discharged;Flue gas can not be coagulated not up to standard, gasification furnace is delivered to by air-introduced machine Interior participation reaction;One tunnel is that secondary gas pipeline connects flue gas drying equipment;The residue after gasifying that gasification furnace produces passes through automatic discharge Device is delivered to lime-ash storage silo, then adds flue gas drying equipment to produce high-temperature flue gas on demand by feeding device.
Especially, described flue gas drying equipment is with step 2) obtain half-dried medicinal residues as main fuel, with step 4) obtain 300-600 DEG C of high-temperature biomass gasification burning is combustion-supporting fuel, adds a small amount of step 4 simultaneously) residue after gasifying that obtains, three After person is fully burnt, form the high-temperature flue gas that temperature is 400-600 DEG C and be used for the semi-moist medicinal residues after dries pulverizing dehydration, after burning The ashes obtaining are rich in multiple inorganic minerals, can be directly used for additive for composite chemical fertilizer.
The dust that described cyclone dust removal equipment reclaims, delivers to compound stalk forming equipment through conveying equipment, is used for preparing medicinal residues Type fuel.
Especially, described semi-moist materials crusher is water mill pulverizer.
Described sewage-treatment plant includes detention tank, plate and frame type filter-press and the sewage purification system being sequentially connected, Sewage in detention tank, after first passing through plate and frame type filter-press filtration, enters back into sewage purification system and purifies;Described plate and frame The filtration residue of pressure filter, enters into flue gas drying equipment through conveyer and carries out drying recycling.
Beneficial effects of the present invention are as follows:
1. apply unique mechanical activation comminution dehydration equipment and sewage disposal technology, the water content control of Chinese medicine residue is existed Less than 55%, and sewage discharge reaches national pharmaceuticals industry pollution discharge standard (Chinese medicine class).
2., using drying mixed-forming technology, both can effectively remove the pollutant such as a small amount of nitrogen/sulfur/chlorine in Chinese medicine residue, The Chinese medicine residue calorific value of itself can be made full use of again and be prepared into medicinal residues shaped fuel (water content≤30%).Because medicinal residues become The energy density of type fuel and mass density are all larger, easily realize the steady and continuous feed in gasification and effective sealing.
3. pass through high efficiency composition gasification technology and high-temperature purification of gas technology, Chinese medicine residue is converted into similar natural gas Clean gas, and transformation efficiency is not less than 85%.All biomass fixed-bed gasification furnace operating conditions are stable, biomass fuel makings Amount is stable, and calorific value is high, and production capacity is big, and pollutant load is extremely low.
4., in terms of investment and operating cost, the equipment cost of biomass gasifying furnace is only equal Chinese medicine residue treatment scale The 15%-20% of direct combustion incinerator cost;And prepared biological fuel gas not only can flexibly supply the production of Industrial Boiler Need, and can fully meet the energy requirements of Chinese medicine residue drying system.
5., in terms of efficiency, the mean calorie of medicine shaped fuel is 3000~3500kcal/kg, at identical conditions, Medicinal residues shaped fuel per ton is about as much as 350nm3Natural gas, enterprise's steam production cost can be down to < 350 yuan/ton steam (my god So the steam cost of gas boiler is about 450 yuan/ton of steamings).
6. from the point of view of environmental angle, using medicinal residues molding fuel gasification combustion technique, (aqueous to process 50,000 tons of medicinal residues year Amount 80%) calculate, alternative Fossil fuel is roughly equal to 5000 tons/year of standard coal, reduces discharging so2Hundredweight/year, reduces discharging co2About 1.3 ten thousand Ton/year, reduce discharging noxAbout 35 tons/year, reduce discharging about 80 tons/year of flue dust.
In a word, the present invention is while efficient process high-moisture Chinese medicine residue, to existing various fire coal/oil and gas Heating system carries out energy-conserving and emission-cutting technology transformation, efficient, inexpensive, pollution-free, by improving system effectiveness and reducing equipment throwing Money cost, not only can reach environmental requirement, also can reduce production cost and the energy consumption of enterprise simultaneously, have huge potential economy Benefit and the market space, solve processing cost height, the wasting of resources and the problem of environmental pollution of existing Chinese medicine residue treatment technology.
Brief description:
Fig. 1 is the process flow diagram of the present invention;
Fig. 2 is the medicinal residues gasification of the present invention and the process chart of gas heating.
Specific embodiment:
The following is and the present invention is further illustrated, rather than limitation of the present invention.
A kind of Chinese medicine residue char combustion heat supplying device as depicted in figs. 1 and 2, the medicinal residues that this device includes being connected are pre- Processing system and medicinal residues gasification combustion system;Described medicinal residues pretreatment system is used for preparing medicinal residues shaped fuel, including connecting successively High moisture material pulverizer, expeller device, semi-moist materials crusher, flame filter press, roller drying equipment and the briquetting connecing Former;Described medicinal residues gasification combustion system be used for medicinal residues shaped fuel gasification, and combustion, including the storage bin being sequentially connected, Feeding device, fixed-bed gasification furnace, high temperature purification device, high-temperature blower and heating equipment;Described compound stalk forming equipment is through conveyer Connect with storage bin;Described fixed-bed gasification furnace is connected with slag-draining device, and residue after gasifying is delivered to ash by automatic slag discharge device Slag storage silo, then lime-ash is added by flue gas drying equipment by feeding device, described flue gas drying equipment is connected with multi-cyclone and removes Dirt equipment and waste-heat recovery device connect;Described waste-heat recovery device also connects with sewage-treatment plant;Described fixed bed gasification The combustion gas that stove produces passes through high temperature purification device dedusting except defocused, is divided, by high-temperature blower, the gas pipeline that clean gas deliver to system It is not connected with gas heating equipment and flue gas drying equipment through moushroom valve;Shown heating equipment rear end is additionally provided with waste heat recovery dress Put;Described waste-heat recovery device connects fixed-bed gasification furnace through air-introduced machine.Described high moisture material pulverizer, mechanical dewatering equipment, Semi-moist materials crusher, flame filter press are connected with sewage-treatment plant.Described sewage-treatment plant includes the dirt being sequentially connected Water precipitation pond, plate and frame type filter-press and sewage purification system.Described cyclone dust removal equipment is through conveyer device with compound stalk forming equipment Connect.
Described expeller device is selected from Double helix press apparatus.
Described semi-moist materials crusher is water mill pulverizer.
Described roller drying equipment is multistage cylinder flue gas drying equipment.
Described waste-heat recovery device is room temperature soft water system.
Described heating equipment is the heating equipments such as boiler, kiln and heat-conducting oil furnace.
Below taking process 10 tons of water content per hour and be 80% herbal tea medicinal residues as a example, illustrate the combustion of Chinese medicine residue char Burn to the method for steam boiler heat supply, using Fig. 1-2 described device, comprise the following steps:
1) the herbal tea medicinal residues raw material (average moisture content is 80%) of medicinal residues crushing/dewatering: 10h/t first passes through high moisture material powder Broken machine be crushed to average-size be 5-10cm wet medicinal residues, then using Double helix press apparatus by pulverize after wet medicinal residues machine Tool extrusion dehydration to water content is 70%, and finally using water mill pulverizer, dehydrant ground-slag being broken to average-size is 0.1- The slurry liquid of 2.5mm, slurry liquid, after flame filter press filtration, obtains the semi-moist medicinal residues that water content is 55%;Herbal tea medicinal residues The waste liquid that crushing/dewatering produces, enters the detention tank in sewage-treatment plant, first passes through plate and frame filter pressing after centralized collection Machine enters back into standard Chinese medicine sewage disposal system and purifies after filtering, plate and frame type filter-press is filtrated to get the filtration that water content is 52% Residue.
2) medicinal residues flue gas drying: step 1) average moisture content of 6.67h/t that obtains is 55% semi-moist medicinal residues and 0.55h/t Plate and frame type filter-press be filtrated to get the filtration residue that average moisture content is 52%, through conveyer enter multistage cylinder flue gas dry In temperature, the high-temperature flue gas for 400-600 DEG C carry out high temperature drying to dry equipment, form continuous drying flow process, upper end constantly adds Material is dried, and lower end ceaselessly exports and dries the half-dried medicinal residues being 40% to water content, and its average product is 3.5h/t.Described flue gas The exhaust emissions temperature of drying plant is 130 DEG C, and tail gas, after multi-cyclone cleaner, enters waste-heat recovery device room temperature Soft water system carries out heat exchange condensation, and the condensed water obtaining enters the detention tank in sewage-treatment plant, can not the coagulating of generation Gas is delivered to by air-introduced machine and is participated in reaction in fixed-bed gasification furnace.
3) medicinal residues mixed-forming: step 2) the half-dried medicinal residues (average moisture content be 40%) that obtain and cyclone dust removal equipment returns The dust received, first enters raw material premix equipment through conveyer, (average moisture content is 12% to the wood powder raw material of interpolation 1.0h/t, grain Footpath < 1cm) and after being sufficiently mixed, then enter compound stalk forming equipment through conveyer, continuously producing 3.0t/h water content is 30% Medicinal residues shaped fuel, its calorific value is 3100kcal/kg.
4) medicinal residues gasification: step 3) the 3.0t/h medicinal residues shaped fuel (average moisture content be 30%) that obtains and 0.5t/h Fuzz stick (average moisture content be 20%), first sends into storage bin by conveyer, then by feeding device by medicinal residues shaped fuel and life Raw material of substance fuzz stick is sent in biomass fixed-bed gasification furnace together through feeding screw;It is fixed bed gasification using aerator Stove provides gasifying medium (air), and gasification forms the high-temperature biomass gas that temperature is 300-600 DEG C, is removed by high temperature purification device Clean gas, except defocused, delivered to the gas pipeline of system, are divided into two-way by high temperature adjustable valve moushroom valve by dirt by high temperature draught fan Use: based on a road, gas pipeline connects heating equipment coal water slurry boiler heating system, its air demand is about 6500nm3/ h, supplies Carry out heat exchange condensation through waste-heat recovery device room temperature soft water system, the condensed water obtaining enters sewage-treatment plant, can not after heat Solidifying flue gas is up to standard can directly to be discharged;Flue gas can not be coagulated not up to standard, be delivered to by air-introduced machine and in gasification furnace, participate in reaction;One tunnel is Secondary gas pipeline connects multistage cylinder flue gas drying equipment;Its air demand is about 1000nm3/h.In actual production process, Can be according to enterprise's steam demand amount, flexible gas consumption;The depth that unnecessary biological fuel gas can be used for medicinal residues is dried, and Produce the medicinal residues shaped fuel side-product of water content≤25%.The residue after gasifying that described gasification furnace produces passes through automatic slag discharge device It is delivered to lime-ash storage silo, then it is high to add multistage cylinder flue gas drying equipment to produce on demand residue after gasifying slag by feeding device Warm flue gas.After the coal water slurry boiler heating system of 15t/h original to enterprise carries out energy-conserving and emission-cutting technology transformation, can directly will be above-mentioned High-temperature biomass gas are as the clean fuel of original boiler heating system., after abundant burning, release is a large amount of for biological fuel gas Heat, can produce the industrial steam (steam pressure: 10atm) of 5-12t/h.After transformation boiler rear end discharge high-temperature flue gas and Room temperature soft water system carries out heat exchange condensation, final exhaust gas temperature < 80 DEG C, and condensed water enters the settlement of sewage in sewage-treatment plant Pond, the flue gas that can not coagulate of generation can direct qualified discharge.
Described multistage cylinder flue gas drying equipment is with step 2) obtain based on half-dried medicinal residues (average moisture content is 40%) Want fuel, with step 4) obtain 300-600 DEG C of high-temperature biomass gasification burning is combustion-supporting fuel, adds a small amount of step simultaneously The residue after gasifying that rapid 4) obtain, after three is fully burnt, forms the high-temperature flue gas that temperature is 400-600 DEG C, for dries pulverizing Semi-moist medicinal residues after dehydration, the steady state operation condition of these three fuel is: half-dried medicinal residues 1.5t/h, biological fuel gas 1000nm3/ H and residue after gasifying 0.25t/h.The ashes obtaining after burning are rich in multiple inorganic minerals, can be directly used for composite chemical fertilizer and add Agent.
A whole set of herbal tea residue char combustion heat supplying device can produce a certain amount of waste liquid, waste gas and waste residue, but this three wastes produces Thing all can realize harmless treatment inside.Described waste liquid be step 1) in medicinal residues crushing/dewatering sewage, and step 2) and Step 4) in flue gas condensing sewage, this three all by after centralized collection, enters the detention tank in sewage-treatment plant, first Enter back into sewage purification system enterprise original standardization Chinese medicine sewage disposal system after plate and frame type filter-press filters to purify; The filtration residue that plate and frame type filter-press is filtrated to get, enters into multistage cylinder flue gas drying equipment through conveyer and carries out profit again With.Described waste gas be step 2) and step 4) in smoke evacuation tail gas condensing after production non-condensable gas, wherein step 4) in reach Mark the direct emission treatment of non-condensable gas, step 2) in non-condensable gas not up to standard then gasification furnace internal reference is delivered to by air-introduced machine With reaction.Described waste residue be step 2) in multistage cylinder flue gas drying equipment full combustion of fuel produce high-temperature flue gas when, The burning ashes being formed because biomass material fully burns;This ashes is rich in multiple inorganic minerals, can be directly as compound The additive of chemical fertilizer uses.
In sum, Chinese medicine residue char combustion heat supplying device disclosed by the invention can be in efficient process high-moisture Chinese medicine While residue (water content >=80%), energy-conserving and emission-cutting technology transformation is carried out to existing various fire coal (oily) heating systems.Due to Chinese medicine residue biolobic material raw material has renewable, sulfur and content of ashes is low and co2The features such as capable of circulation, after therefore transforming The discharge of the harmful gass of former heating system and greenhouse gases will be greatly reduced.The present invention is efficient, inexpensive, pollution-free, passes through Improve system effectiveness and reduce equipment investment cost, not only can reach national up-to-date environmental protection standard, also can reduce enterprise simultaneously Production cost and energy consumption;Thus, have huge potential economic benefit and the market space.

Claims (7)

1. a kind of Chinese medicine residue char combustion heat supplying device is it is characterised in that this device includes the medicinal residues pretreatment system being connected System and medicinal residues gasification combustion system;Described medicinal residues pretreatment system is used for preparing medicinal residues shaped fuel, including the height being sequentially connected Wet stock pulverizer, mechanical dewatering equipment, semi-moist materials crusher, flame filter press, flue gas drying equipment and compound stalk forming set Standby;Described medicinal residues gasification combustion system is used for the gasification, and combustion of medicinal residues shaped fuel, including the storage bin being sequentially connected, feeding dress Put, fixed-bed gasification furnace, high temperature purification device, high-temperature blower and heating equipment;Described compound stalk forming equipment is through conveyer with storing Storehouse connects;Described fixed-bed gasification furnace is connected with slag-draining device, and residue after gasifying is delivered to lime-ash storage by automatic slag discharge device Storehouse, then lime-ash is added by flue gas drying equipment by feeding device, described flue gas drying equipment is connected with multi-cyclone cleaner Connect with waste-heat recovery device;Described waste-heat recovery device also connects with sewage-treatment plant;Described fixed-bed gasification furnace produces Combustion gas pass through high temperature purification device dedusting remove defocused, clean gas are delivered to through high temperature by the gas pipeline of system by high temperature draught fan Regulating valve is connected with gas heating equipment and flue gas drying equipment respectively;Shown heating equipment rear end is additionally provided with waste heat recovery dress Put;Described waste-heat recovery device connects fixed-bed gasification furnace through air-introduced machine;Described mechanical dewatering equipment be selected from Double helix squeezing or The multistage filtering equipment of belt;Described high moisture material pulverizer, mechanical dewatering equipment, semi-moist materials crusher, flame filter press are even It is connected to sewage-treatment plant;Described cyclone dust removal equipment connects with compound stalk forming equipment through conveyer device.
2. Chinese medicine residue char combustion heat supplying device according to claim 1 is it is characterised in that described semi-moist crushing material Machine is water mill pulverizer;Detention tank, plate and frame type filter-press and sewage that described sewage-treatment plant includes being sequentially connected are net Change system;Described flue gas drying equipment is multistage cylinder flue gas drying equipment;Described waste-heat recovery device is room temperature soft water system System;Shown high temperature adjustable valve is moushroom valve.
3. a kind of Chinese medicine residue char combustion heat supplying method is it is characterised in that utilize the Chinese medicine residue described in claim 1 or 2 Gasification combustion heating apparatus, comprise the following steps:
1) water content is that to be crushed to average-size through high moisture material pulverizer be 5-10cm, then through machine for more than 80% Chinese medicine residue It is 65-75% that tool dehydration equipment is dehydrated to water content, and being finally crushed to average-size using semi-moist materials crusher is 0.1- The slurry liquid of 2.5mm;After flame filter press filtration, obtain water content is the semi-moist medicinal residues of 50-55% to slurry liquid;Chinese medicine residue The waste liquid that crushing/dewatering produces, enters sewage-treatment plant after centralized collection;
2) step 1) the semi-moist medicinal residues that obtain through conveyer enter flue gas drying equipment in temperature the high-temperature flue gas for 400-600 DEG C Carry out drying the half-dried medicinal residues obtaining that water content is 35%-45%;The tail gas of described flue gas drying equipment is through multi-cyclone dedusting After equipment, enter waste-heat recovery device and carry out heat exchange condensation, the condensed water that obtains enters sewage-treatment plant, can not the coagulating of generation Gas is delivered to by air-introduced machine and is participated in reaction in fixed-bed gasification furnace;
3) step 2) water content that obtains is that the half-dried medicinal residues of 35%-45% first enter raw material premix equipment through conveyer, adds Water content≤15%, and particle diameter <biomass material of 1cm after being sufficiently mixed, then enter compound stalk forming equipment, preparation through conveyer Become the medicinal residues shaped fuel that water content is 20%-30%;
4) step 3) the medicinal residues shaped fuel that obtains and water content≤25% biomass material, first storing is sent into by conveyer Storehouse, then sent in biomass fixed-bed gasification furnace by feeding device;There is provided gasifying medium using aerator for fixed-bed gasification furnace, Gasification forms the high-temperature biomass gas that temperature is 300-600 DEG C;Removed defocused by high temperature purification device dedusting, by high temperature draught fan Clean gas are delivered to the gas pipeline of system, two-way is divided into by high temperature adjustable valve and uses: based on a road, gas pipeline connects Heating equipment, carries out heat exchange condensation through waste-heat recovery device after heat supply, and the condensed water obtaining enters sewage-treatment plant, can not coagulate Flue gas is up to standard can directly to be discharged;Flue gas can not be coagulated not up to standard, be delivered to by air-introduced machine and in gasification furnace, participate in reaction;One tunnel is pair Gas pipeline connects flue gas drying equipment;The residue after gasifying that gasification furnace produces is delivered to lime-ash storage by automatic slag discharge device Storehouse, then add flue gas drying equipment to produce high-temperature flue gas on demand by feeding device.
4. Chinese medicine residue char combustion heat supplying method according to claim 3 is it is characterised in that described flue gas drying equipment With step 2) obtain half-dried medicinal residues as main fuel, with step 4) obtain 300-600 DEG C of high-temperature biomass gasification burning is Combustion-supporting fuel, adds a small amount of step 4 simultaneously) residue after gasifying that obtains, after three is fully burnt, forming temperature is 400-600 DEG C high-temperature flue gas be used for dries pulverizing dehydration after semi-moist medicinal residues, the ashes obtaining after burning be rich in multiple inorganic minerals, Can be directly used for additive for composite chemical fertilizer.
5. the Chinese medicine residue char combustion heat supplying method according to claim 3 or 4 is it is characterised in that step 1) described rotation The dust that wind cleaner reclaims, delivers to compound stalk forming equipment through conveying equipment, is used for preparing medicinal residues shaped fuel.
6. the Chinese medicine residue char combustion heat supplying method according to claim 3 or 4 is it is characterised in that described half wet stock Pulverizer is water mill pulverizer.
7. the Chinese medicine residue char combustion heat supplying method according to claim 3 or 4 is it is characterised in that described sewage disposal Device includes detention tank, plate and frame type filter-press and the sewage purification system being sequentially connected, the sewage in detention tank, elder generation After plate and frame type filter-press filters, enter back into sewage purification system and purify;The filtration residue of described plate and frame type filter-press, through defeated Send machine to enter into flue gas drying equipment to carry out drying recycling.
CN201610932497.XA 2016-10-31 2016-10-31 Traditional Chinese medicine residue gasification combustion heat supply device and method Pending CN106350116A (en)

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CN112923375A (en) * 2021-01-21 2021-06-08 中国科学院过程工程研究所 Integrated reduction method for graded comprehensive utilization of high-humidity biomass residue heat and synchronous moisture removal
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Application publication date: 20170125