CN207622040U - A kind of small-sized domestic garbage pyrolysis gasification fume afterheat gradient utilization system - Google Patents
A kind of small-sized domestic garbage pyrolysis gasification fume afterheat gradient utilization system Download PDFInfo
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- CN207622040U CN207622040U CN201721072547.8U CN201721072547U CN207622040U CN 207622040 U CN207622040 U CN 207622040U CN 201721072547 U CN201721072547 U CN 201721072547U CN 207622040 U CN207622040 U CN 207622040U
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses a kind of small-sized domestic garbage pyrolysis gasification fume afterheat gradient utilization systems, it includes pyrolysis oven（Inside set drying garbage pipeline）, flue gas cooling pipe sleeve, cyclone dust removal cooling device, heat exchanger, biomass filler tar-removing device, lye water washing device, demister, shell and tube smoke re-heater, arrange outside chimney etc..By the applicability for making full use of different temperatures flue gas and cooling water, the efficient combination that flue gas reheat utilizes and life uses is realized, improves the thermal efficiency, while improving the temperature and diffusivity of discharged gas fume, effectively reduce the risk of haze formation, obvious environment benefit.
Description
Technical field
The utility model is related to a kind of small-sized domestic garbage pyrolysis gasification fume afterheat gradient utilization systems.
Background technology
With the rapid development of social economy with science and technology progress, China's domestic garbage pyrolysis gasification technology because of it not
Auxiliary fuel, the advantages such as pollutant emission is few, burn decrement rate is low, processing cost is low, floor space is small are added, are just gradually being substituted original
Sanitary landfills, compost, burn away the refuse power generation etc. technologies.Tail gas is because containing sulfur dioxide, chlorination after domestic garbage pyrolysis gasification
The sour gas such as hydrogen, nitrogen oxides and use wet flue gas processing system, cause discharged gas fume temperature be 50 DEG C or so, humidity exists
200g/Nm3Left and right, and the medial humidity of China's air is only 9g/Nm3So that low temperature, high humility flue gas be difficult to spread, cigarette
Gas white haze phenomenon is universal, and haze is also just increasingly severe.For this purpose, becoming many prosperities using 80 degree or more high-temperature flue gas discharges
National flue gas emission hardness standard.Japan requires 90-100 DEG C of flue-gas temperature of discharge, Germany that discharge flue-gas temperature is required to be not less than
72 DEG C, Britain requires smog discharge temperature to be not less than 80 DEG C.Further to control haze, China also should be by smog discharge temperature
It improves to not less than 80 DEG C.
The drying layer of domestic garbage pyrolysis gasification oven upper end is mainly using the heat radiation of furnace high-temperature flue gas come to life rubbish
Rubbish is dried, but since inner flue gas of the stove temperature is continuously decreased from stove center to both sides, leads to the house refuse of same level
Dry and follow-up pyrolytic gasification reaction speed is inconsistent, influences the stability of pyrolysis gasification furnace operation.To solve same plane life
The problem of drying garbage uneven heating living considers to carry out auxiliary drying to rubbish along furnace wall setting drying tube in drying layer.
Currently, domestic garbage pyrolysis gasification technology treatment scale is less than normal（Less than 100t/d）, thermal Finite is generated, if by this
For a little thermal energy for generating electricity, the thermal energy of economic benefit unobvious, generation is converted mainly into thermal water resource, for resident living, manually
Hot spring.For problem existing for above-mentioned domestic garbage pyrolysis gasification process, using high-temperature flue gas first to furnace wall house refuse into
Row auxiliary drying, using water cooling heat exchange obtain thermal water resource, using thermal water resource to the low-temperature flue gas after wet-treating again
The mode of heating solves the problems, such as that smog discharge temperature is low, humidity is big, diffusion energy force difference, it is ensured that flue gas white haze is effectively controlled
Reason realizes cycle and efficient cascade utilization in domestic garbage pyrolysis gasification waste heat.
Utility model content
The utility model aims to solve the problem that house refuse drying uneven heating is low with discharge flue-gas temperature, humidity is big, white haze is existing
As universal problem, a kind of domestic garbage pyrolysis gasification fume afterheat gradient utilization system is provided.
In order to achieve the above object, technical solution provided by the utility model is：
The small-sized domestic garbage pyrolysis gasification fume afterheat gradient utilization system includes pyrolysis oven, is set in the pyrolysis oven
Drying garbage pipeline；
The flue outlet of the gas inlet and pyrolysis oven of the drying garbage pipeline connects, the flue import
It is connected to the dual firing chamber of pyrolysis oven；The exhanst gas outlet of the drying garbage pipeline is connect with the gas inlet of cooling pipe sleeve；It is described
The exhanst gas outlet of cooling pipe sleeve is connect with the gas inlet of cyclone dust removal cooling device；The flue gas of the cyclone dust removal cooling device
Outlet is connect with the gas inlet of heat exchanger；The cigarette of the exhanst gas outlet and biomass filler tar-removing device of the heat exchanger
Gas import connects；The exhanst gas outlet of the biomass filler tar-removing device is connect with the gas inlet of lye water washing device；Institute
The gas inlet of the exhanst gas outlet and demister of stating lye water washing device connects；The exhanst gas outlet of the demister and shell and tube cigarette
The gas inlet of gas reheater connects；The exhanst gas outlet of the shell and tube smoke re-heater is connect with chimney；
The cooling water inlet of the heat exchanger and cooling water pipe pipeline joint with connect, the cooling water outlet of heat exchanger with
The cold water inlet of cyclone dust removal cooling device connects, the cooling of the cooling water outlet of cyclone dust removal cooling device and cooling pipe sleeve
Water water inlet connects, and the hot water outlet of cooling pipe sleeve is connect with shell and tube smoke re-heater, the heat of shell and tube smoke re-heater
Water out is connect with urbanite water consumption end.
Preferably, the drying garbage pipeline being arranged inside pyrolysis oven is to be in from the bottom to top along the furnace wall of pyrolysis oven
Helical form arrangement.The system also includes tar storage pools；The biomass filler tar-removing device is equipped with tar outlet；Institute
The tar outlet for stating biomass filler tar-removing device is connect with tar storage pool and the connecting pipe of the two is equipped with tar
Pump.The system also includes wastewater sedimentation reuse tanks and lye pond；The import of the wastewater sedimentation reuse tank is filled with lye washing
The wastewater outlet connection set；The outlet of the wastewater sedimentation reuse tank is connect with lye pond, and lye pond connects with lye water washing device
It connects.
The utility model is described in further detail below：
Domestic garbage pyrolysis described in the utility model gasification flue gas through in pyrolysis oven drying garbage pipeline, water cold sleeve,
After cyclone dust removal cooling device and heat exchanger heat exchange processing, house refuse rate of drying at furnace wall can be accelerated, it is ensured that same flat
Drying garbage living and the reaction speed of looking unfamiliar are close, improve the stability of domestic garbage pyrolysis gasification oven operation；Drying tube is under
It is supreme to arrange in the shape of a spiral, promote high-temperature flue gas to form reverse movement with house refuse, further improves rate of heat exchange.This
Outside, reverse cooling water can be also heated to 90 DEG C or so by high-temperature flue gas, obtain thermal water resource；The flue gas that pyrolysis oven generates uses water
After cold heat exchange and wet method deacidification processing, enter the tubulation being made of high-temperature cooling water and low-temperature flue gas through demisting, activated carbon adsorption
Formula smoke re-heater, outer row after heated rear flue-gas temperature is not less than 80 DEG C, cooling water temperature are reduced to 50 DEG C or so, can be direct
For resident living, artificial hot-spring.
Flue gas described in the utility model from pyrolysis oven come out after trend be：Pyrolysis oven exhanst gas outlet --- drying garbage pipe
--- flue gas cools down pipe sleeve, and --- cyclone dust removal cooling device --- heat exchanger --- biomass filler tar removing fills in road
Set --- lye water washing device --- row outside demister --- shell and tube smoke re-heater --- chimney；Cooling water moves towards：Heat
--- --- flue gas cools down pipe sleeve --- shell and tube smoke re-heater --- urbanite water consumption to cyclone dust removal cooling device to exchanger.
Cooling water temperature is about 30 DEG C, successively through over-heat-exchanger, cyclone dust removal cooling device and water cold sleeve, through abundant
After heat exchange, but hot water is evacuated to shell and tube smoke re-heater to cooling pipe sleeve water by temperature up to 90 DEG C or so by pump and insulating tube.
In shell and tube smoke re-heater, in row in-pipe, high-temperature-hot-water exists outside tubulation with flue gas reverse flow, flue gas low-temperature flue gas
Residence time in tubulation（Heat exchanger time）More than 10S, sufficient heat exchange is realized.The outer hot water temperature of tubulation is more than or equal to 85
DEG C, about 50 DEG C of outlet temperature after heat exchange can be directly used for resident living and artificial hot-spring without blending cold water, realize life
Efficient, the cascade utilization of refuse pyrolysis gasification waste heat.
Compared with prior art, the utility model has the following advantages that：
（1）Ensure to be heated evenly, improves system run all right
Enter the drying tube arranged in the shape of a spiral from the bottom to top along furnace wall using high-temperature flue gas to the house refuse at furnace wall
Carry out auxiliary drying, it is ensured that same plane house refuse is dried and reaction speed is close, improves domestic garbage pyrolysis gasification oven
The stability of operation.
（2）Exhaust heat stepped utilization, it is more efficient
The thermal water resource that domestic garbage pyrolysis gasification generates is existed using cold water is blent for resident living, artificial hot-spring
The phenomenon that thermal loss is big, hot water utilization rate is not high.The utility model makes full use of cooling water temperature section applicability, utilizes height
Warm cooling water realizes the efficient cascade utilization of waste heat, improves to being directly used in resident living, artificial hot-spring after flue gas
The thermal efficiency.
（3）It improves and arranges temperature outside flue gas, environmental benefit is more notable
The utility model can have the flue-gas temperature after wet-treating 50 DEG C or so to improve to 80 DEG C or more, improve outer row
The temperature and diffusivity of flue gas greatly reduce the humidity of discharged gas fume and its aggregation extent in low latitude, effectively reduce
The risk that haze is formed, environmental benefit are more notable.
（4）Flue gas white haze is effectively administered, environment sense organ is promoted
The temperature of flue gas is improved, saturation of the air water content is increased, to a certain extent so that flue gas white haze is effectively controlled
Reason improves domestic garbage pyrolysis gasification plant environment sense organ, changes domestic garbage pyrolysis gasification technology consolidating in the minds of the common people
" big pollution " image having, helps somewhat to domestic garbage pyrolysis gasification technology and is pushed in the big of the vast rural areas
Extensively.
Utilize system by making full use of not equality of temperature in short, domestic garbage pyrolysis gasification described in the utility model is exhaust heat stepped
The applicability for spending cooling water realizes the efficient combination that flue gas reheat utilizes and life uses, and improves the thermal efficiency, improves simultaneously
The temperature and diffusivity of discharged gas fume effectively reduce the risk of haze formation, obvious environment benefit.
Description of the drawings
Fig. 1 is the structural schematic diagram of the small-sized domestic garbage pyrolysis gasification fume afterheat gradient utilization system of the utility model；
Fig. 2 is the structure of pyrolysis oven in the small-sized domestic garbage pyrolysis gasification fume afterheat gradient utilization system of the utility model
Schematic diagram.
In figure：1, dual firing chamber, 2, flue, 3, drying garbage pipeline, 4, cooling pipe sleeve, 5, cyclone dust removal cooling dress
Set, 6, heat exchanger, 7, biomass filler tar-removing device, 8, lye water washing device, 9, demister, 10, shell and tube flue gas again
Hot device, 11, tar storage, 12, tar pump, 13, cooling water pipeline, 14, wastewater sedimentation reuse tank, 15, lye pond, 16, pyrolysis
Stove.
Specific implementation mode
Referring to Fig. 1 and Fig. 2, the small-sized domestic garbage pyrolysis gasification fume afterheat gradient utilization system includes pyrolysis oven
16, drying garbage pipeline 3 is set in the pyrolysis oven 16；The flue gas of the gas inlet and pyrolysis oven 16 of the drying garbage pipeline 3
The outlet of pipeline 2 connection, 2 import of the flue are connected to the dual firing chamber 1 of pyrolysis oven 16；The cigarette of the drying garbage pipeline 3
Gas is exported to be connect with the gas inlet of cooling pipe sleeve 4；The exhanst gas outlet of the cooling pipe sleeve 4 and cyclone dust removal cooling device 5
Gas inlet connects；The exhanst gas outlet of the cyclone dust removal cooling device 5 is connect with the gas inlet of heat exchanger 6；The heat
The exhanst gas outlet of exchanger 6 is connect with the gas inlet of biomass filler tar-removing device 7；The biomass filler tar removing dress
7 exhanst gas outlet is set to connect with the gas inlet of lye water washing device 8；The exhanst gas outlet and demisting of the lye water washing device 8
The gas inlet of device 9 connects；The exhanst gas outlet of the demister 9 is connect with the gas inlet of shell and tube smoke re-heater 10；Institute
The exhanst gas outlet for stating shell and tube smoke re-heater 10 is connect with chimney；The cooling water inlet and cooling water pipe of the heat exchanger 6
13 interface of road with connect, the cooling water outlet of heat exchanger 6 is connect with the cold water inlet of cyclone dust removal cooling device 5, and whirlwind removes
The cooling water outlet of dirt cooling device 5 is connect with the cooling water intake of cooling pipe sleeve 4, the hot water outlet of cooling pipe sleeve 4
It is connect with shell and tube smoke re-heater 10, shell and tube smoke re-heater（10）Hot water outlet connect with urbanite water consumption end.
Wherein, the drying garbage pipeline 3 being arranged inside pyrolysis oven 16 be along pyrolysis oven 16 furnace wall by down toward
On in the shape of a spiral arrange.The system also includes tar storage pools 11；The biomass filler tar-removing device 7 is equipped with tar
Outlet；The tar outlet of the biomass filler tar-removing device 7 is connect with tar storage pool 11 and in the connecting pipe of the two
Equipped with tar pump 12.The system also includes wastewater sedimentation reuse tanks 14 and lye pond 15；The wastewater sedimentation reuse tank 14
Import is connect with the wastewater outlet of lye water washing device 8；The outlet of the wastewater sedimentation reuse tank 14 is connect with lye pond 15, alkali
Liquid pool 15 is connect with lye water washing device 8.
The small-sized domestic garbage pyrolysis gasification fume afterheat gradient utilization system makes full use of different temperatures flue gas and cold
But the applicability of water so that system thermal efficiency improves about 10%, and discharge flue-gas temperature improves nearly 50%.
Claims (4)
- The fume afterheat gradient utilization system 1. a kind of small-sized domestic garbage pyrolysis gasifies, which is characterized in that the system comprises heat Solve stove（16）, the pyrolysis oven（16）Inside set drying garbage pipeline（3）；The drying garbage pipeline（3）Gas inlet and pyrolysis oven（16）Flue（2）Outlet connection, the fume pipe Road（2）Import and pyrolysis oven（16）Dual firing chamber（1）Connection；The drying garbage pipeline（3）Exhanst gas outlet and cooling pipe sleeve （4）Gas inlet connection；The cooling pipe sleeve（4）Exhanst gas outlet and cyclone dust removal cooling device（5）Gas inlet connect It connects；The cyclone dust removal cooling device（5）Exhanst gas outlet and heat exchanger（6）Gas inlet connection；The heat exchanger （6）Exhanst gas outlet and biomass filler tar-removing device（7）Gas inlet connection；The biomass filler tar-removing device （7）Exhanst gas outlet and lye water washing device（8）Gas inlet connection；The lye water washing device（8）Exhanst gas outlet with Demister（9）Gas inlet connection；The demister（9）Exhanst gas outlet and shell and tube smoke re-heater（10）Flue gas into Mouth connection；The shell and tube smoke re-heater（10）Exhanst gas outlet connect with chimney；The heat exchanger（6）Cooling water inlet and cooling water pipeline（13）Interface with connect, heat exchanger（6）Cooling water Outlet and cyclone dust removal cooling device（5）Cold water inlet connection, cyclone dust removal cooling device（5）Cooling water outlet with it is cold But pipe sleeve（4）Cooling water intake connection, cooling pipe sleeve（4）Hot water outlet and shell and tube smoke re-heater（10）Even It connects, shell and tube smoke re-heater（10）Hot water outlet connect with urbanite water consumption end.
- The fume afterheat gradient utilization system 2. small-sized domestic garbage pyrolysis as described in claim 1 gasifies, which is characterized in that set It sets in pyrolysis oven（16）The internal drying garbage pipeline（3）It is along pyrolysis oven（16）Furnace wall from the bottom to top in the shape of a spiral Arrangement.
- The fume afterheat gradient utilization system 3. small-sized domestic garbage pyrolysis as described in claim 1 gasifies, which is characterized in that institute The system of stating further includes tar storage pool（11）；The biomass filler tar-removing device（7）Equipped with tar outlet；The biomass Filler tar-removing device（7）Tar outlet and tar storage pool（11）The connecting pipe of connection and the two is pumped equipped with tar （12）.
- The fume afterheat gradient utilization system 4. small-sized domestic garbage pyrolysis as described in claim 1 gasifies, which is characterized in that institute The system of stating further includes wastewater sedimentation reuse tank（14）With lye pond（15）；The wastewater sedimentation reuse tank（14）Import and lye Water washing device（8）Wastewater outlet connection；The wastewater sedimentation reuse tank（14）Outlet and lye pond（15）Connection, lye pond （15）With lye water washing device（8）Connection.
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| CN201721072547.8U CN207622040U (en) | 2017-08-25 | 2017-08-25 | A kind of small-sized domestic garbage pyrolysis gasification fume afterheat gradient utilization system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477602A (en) * | 2017-08-25 | 2017-12-15 | 湖南省环境保护科学研究院 | A kind of small-sized domestic garbage pyrolysis gasification fume afterheat gradient utilization system |
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- 2017-08-25 CN CN201721072547.8U patent/CN207622040U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477602A (en) * | 2017-08-25 | 2017-12-15 | 湖南省环境保护科学研究院 | A kind of small-sized domestic garbage pyrolysis gasification fume afterheat gradient utilization system |
| CN107477602B (en) * | 2017-08-25 | 2023-09-05 | 湖南省环境保护科学研究院(湖南省无公害生态经济研究所) | Small household garbage pyrolysis gasification flue gas waste heat cascade utilization system |
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