CN211871883U - Range-dividing domestic garbage drying pyrolysis purification technology - Google Patents
Range-dividing domestic garbage drying pyrolysis purification technology Download PDFInfo
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- CN211871883U CN211871883U CN201921941476.XU CN201921941476U CN211871883U CN 211871883 U CN211871883 U CN 211871883U CN 201921941476 U CN201921941476 U CN 201921941476U CN 211871883 U CN211871883 U CN 211871883U
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Abstract
The invention provides a process garbage drying pyrolysis purification technology, which comprises the following steps: the domestic garbage drying device comprises a domestic garbage dryer, a pyrolyzer, a purifying device, a gas storage tank, a slag discharging device and an electric heater. The garbage pretreatment drying device is used for pretreating household garbage, and the drying device is used for reducing moisture in the household garbage; the drying device is connected with the pyrolysis device and is used for the pyrolysis of the household garbage to generate gas; the pyrolysis device is connected with the combustible gas purification system device and is used for purifying the combustible gas; the purifying system is connected with the gas storage device and is used for storing combustible gas and buffering the combustible gas, and energy required by drying and pyrolysis is provided by the electric heater. The invention has good environmental benefit, good harmless effect and strong practicability and realizes the recycling of garbage energy.
Description
Technical Field
The utility model relates to a technique for handling domestic waste is particularly useful for resident domestic waste's processing, avoids the adjacent effect of keeping away that msw incineration brought, and domestic waste drying pyrolysis purifies, and the gas storage utilizes.
Background
The sanitary landfill technology of the household garbage is widely adopted and plays a great role in the household garbage treatment in China. However, in the application facilities of the technology, the land occupation amount is large, the recovery is difficult, the production amount of percolate is large, the treatment cost is expensive, the stink control is difficult, the disturbance to people is serious, and the group event hidden danger related to the landfill facilities is increasingly serious in recent years.
The waste incineration technology and the process equipment mainly aim at the household waste which is mixed and collected, the heat value range is controlled to be 1000-2300 kCal/kg, and the waste incineration technology and the process equipment are widely applied to large and medium-sized cities due to obvious volume reduction and weight reduction effects. However, the technical process also has a plurality of problems, such as difficult furnace temperature stable control, too complex flue gas treatment, large total emission amount, more pollutant emission, too complex waste heat energy recovery and power generation, high requirements on the overall technical process and operation technology, and high requirements on scale, site and environment capacity.
The technology for preparing gas by pyrolyzing garbage has very high economic benefit under the condition of high environmental protection of garbage treatment, and because the structure of the garbage is changed from the molecular level by pyrolysis, the high-water content biomass garbage which is difficult to solve by an incineration method can be fully utilized (a large amount of contained cellulose can be completely pyrolyzed to prepare gas), organic matter components of the waste can be converted into an available energy form, and the economy is better; the fuel gas generated by pyrolysis can be directly combusted or mixed and combusted with other fuels with high calorific value according to the calorific value, tar generated in the reaction process can be made into fuel or extracted into chemical raw materials according to the property of the tar, and the environment-friendly characteristic of the pyrolysis process also saves a large amount of later-stage environment-friendly investment and operation cost like an incineration method; at present, the existing domestic garbage pyrolysis gasification technology at home and abroad mainly uses secondary combustion chamber combustion to replace the traditional incineration, and directly burns the generated crude gas and then treats the crude gas as incineration tail gas. Poor energy-saving and emission-reducing effects, complex process and high cost. The purification and quality improvement process aiming at the crude fuel gas generated by the direct pyrolysis of the household garbage has no forming, reliable and stable operation process technology and matched equipment in China.
According to the processing problem of present pyrolysis, adopt the gasification purification technology of journey formula pyrolysis, through to domestic waste journey drying dehydration, produce combustible gas after the pyrolysis, through purification and purification system collection utilization, can avoid the production of dioxin, the semicoke can directly be purified and be used for the metallurgical industry, reaches furthest and improves the utilization ratio of rubbish, produces higher energy benefit, and the high calorific value gas of production can have multiple use.
SUMMERY OF THE UTILITY MODEL
The utility model provides a be used for domestic waste drying, pyrolysis, purification treatment technique, through carrying out drying, pyrolysis, purification to domestic waste and upgrading, obtain high calorific value combustible gas, realize rubbish innoxious, resourceization, reduction treatment.
The utility model discloses a realize through following technical scheme:
the utility model provides a be used for handling domestic waste utilization of resources system, include: domestic waste drying system, pyrolysis system, gas clean system, gas holder and electric heater. The household garbage enters a drying device and is used for evaporating moisture in the household garbage; the drying device is connected with the pyrolysis system device, the pyrolysis device is subjected to anaerobic pyrolysis, and then the drying device is connected with the combustible gas purification system device and used for purifying the combustible gas; the purification system is connected with the gas storage device and is used for storing combustible gas, and a heat source for drying and pyrolysis is provided by the electric heater. The utility model discloses environmental benefit is good, and innoxious effectual, the practicality is strong, realizes rubbish energy recycle.
The utility model discloses main advantage: the drying, pyrolysis, purification and quality improvement are carried out by unit preparation, and parameters of each part can be accurately controlled; accurately treating the domestic garbage according to the characteristics of the domestic garbage in China; the garbage treated by the bisection system can be recycled by centralized resource treatment and can also be treated and applied in a small scale; the method has the advantages of low investment, environmental friendliness, good economic benefit, strong adaptability and low project operation cost, and can realize the resource efficient utilization of the household garbage after the household garbage is rapidly sorted to the greatest extent.
Drawings
The invention is explained in further detail according to the attached system diagram.
FIG. 1 is a schematic structural diagram of a pyrolysis and gasification treatment system for waste with ultrahigh calorific value according to the present invention;
FIG. 1 shows, according to the drawing: 1. a garbage temporary storage box; 2. a dryer; 3. a pyrolyzer system; 4. a gas purification system; 5. a Roots blower; 6. a gas storage tank; 7. an electric heater; 8. a slag discharging device.
Detailed Description
The invention will be elucidated below on the basis of an embodiment shown in the drawing.
The utility model discloses affiliated domestic waste drying pyrolysis treatment system contains domestic waste drying device: the garbage temporary storage box 1, the dryer 2 and the electric heater 7; a pyrolysis device: 2, a pyrolyzer 3, a drying system 2, an electric heater 7 and a slag discharging device 8 are connected; a purification device: the combustible gas purification system 4 is connected with the gas storage device 6 through a Roots blower 5.
Preferably, the drying system 1 is used for evaporating moisture in the pretreated domestic garbage by using energy in the system so as to reduce the influence on the rear-end garbage treatment, and the energy required by drying is provided by an electric heater;
preferably, the pyrolysis device 2 absorbs energy in the pyrolyzer after the dried garbage is dried, and combustible gas is generated in an oxygen-free state to realize the chemical conversion of garbage energy; residual garbage ash is removed through a slag discharging device;
preferably, the purification device 3 is used for purifying combustible gas to realize gas purification and quality improvement;
when using this novel technology, with the domestic waste of preliminary treatment, get into drying device 1 and carry out the desorption moisture drying, dry rubbish after the drying passes through transmission and gets into 2 reactions of pyrolyzer, produces the higher pyrolysis gas of calorific value, purifies the back through the cooling, gets into combustible gas storage device 6 through fan 5, and the lime-ash passes through slag discharging device 8 and collects, and the energy of drying and pyrolysis is provided by electric heater 7.
The heat required by the drying and the pyrolysis of the domestic garbage in the anaerobic state in the process is heat provided by electric heating; the residue after pyrolysis can be recycled after treatment, and can also be directly subjected to harmless landfill treatment; the water after temporary storage, drying treatment and purification treatment of combustible gas can be recycled for gas washing treatment of combustible gas after passing through a water treatment system, and can also be changed into usable clear water after being subjected to microbial treatment; the odor can be used as gasifying agent for gasification after deodorization.
The heat value of the dried garbage can reach 2562kCal/kg, the pyrolysis reduction rate is 60 percent, the volume reduction is 70 percent, and the heat value of each ton of garbage can be 1520kCal/m3520m of combustible gas3。
The embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is not limited by the following description of the embodiments, but is defined only by the scope of the claims, and includes all modifications that have the same meaning as the scope of the claims and are within the scope of the claims.
Claims (7)
1. A drying, pyrolysis and purification technology for household garbage in a split-range mode is characterized by comprising a garbage temporary storage box, a dryer, a pyrolyzer, a crude gas purification device, a Roots blower, a gas storage tank, an electric heater and a slag discharging device, wherein the household garbage passes through the dryer from the garbage temporary storage box and is dried and dehydrated; carrying out pyrolysis treatment in a pyrolyzer to convert organic solid waste into crude fuel gas with high calorific value; purifying the crude fuel gas generated by pyrolysis by a crude fuel gas purification device; the combustible gas enters the gas storage tank under the pressurization of the fan, so that the storage of the combustible gas is realized, and the combustible gas can be used for burning, supplying heat and generating power.
2. The household garbage drying, pyrolysis and purification technology according to claim 1, wherein the moisture content of the household garbage is substantially reduced, and the household garbage is heated by the energy of an electric heater to forcibly evaporate the moisture of the household garbage.
3. The household garbage drying, pyrolyzing and purifying technology according to claim 1, wherein the dried household garbage absorbs heat in the pyrolyzer, so that organic matters in the garbage are pyrolyzed to generate combustible gas, and macromolecular organic matters are changed into micromolecular organic matters, thereby realizing the conversion process from solid fuel to gas fuel.
4. The household garbage drying, pyrolyzing and purifying technology as claimed in claim 1, wherein the clean fuel gas is obtained by removing impurities from the crude fuel gas by means of dust removal, decoking and acid and alkaline gas removal.
5. The household garbage drying, pyrolyzing and purifying technology according to claim 1, wherein the combustible gas after pyrolysis is stored in the device, so as to play a role of storing gas.
6. The split-range household garbage drying, pyrolysis and purification technology as claimed in claim 1, wherein electric energy is utilized to convert heat energy through resistance wires to provide energy for drying and pyrolysis.
7. The household garbage drying, pyrolyzing and purifying technology according to claim 1, wherein the system can realize the continuous operation of household garbage under the condition of a split-charging step-by-step system; and the system is operated in a layered and step-by-step combined manner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921941476.XU CN211871883U (en) | 2019-11-12 | 2019-11-12 | Range-dividing domestic garbage drying pyrolysis purification technology |
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| CN201921941476.XU CN211871883U (en) | 2019-11-12 | 2019-11-12 | Range-dividing domestic garbage drying pyrolysis purification technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565681A (en) * | 2021-08-09 | 2021-10-29 | 国网浙江省电力有限公司电力科学研究院 | Coupling system using electric heating gasification furnace and multi-energy conversion method thereof |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565681A (en) * | 2021-08-09 | 2021-10-29 | 国网浙江省电力有限公司电力科学研究院 | Coupling system using electric heating gasification furnace and multi-energy conversion method thereof |
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