CN108194929B - A kind of low heat value wet stock self energizing drying and incinerating System and method for - Google Patents
A kind of low heat value wet stock self energizing drying and incinerating System and method for Download PDFInfo
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- CN108194929B CN108194929B CN201810000954.0A CN201810000954A CN108194929B CN 108194929 B CN108194929 B CN 108194929B CN 201810000954 A CN201810000954 A CN 201810000954A CN 108194929 B CN108194929 B CN 108194929B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/04—Arrangements of recuperators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
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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
- 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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
Abstract
Low heat value wet stock is sent into biological heat anhydration system, carries out full combustion after desiccation by a kind of low heat value wet stock self energizing drying and incinerating System and method for, and the high-temperature flue gas of generation carries out solid gas separation, after the cooling high-temperature fume after separation, into flue gas purification device；After cold air sequentially enters condensation heat exchange device and the heat exchange heating of second level heat-exchange device, hot-air a part of generation is blown into from incinerator bottom, damp-heat air is formed after the dry wet stock of another part hot-air carries out heat exchange cooling dehumidification, air after heat exchange dehumidification exchanges heat heating again, into incinerator；The condensed water of generation enters condensed water collecting device.A kind of low heat value wet stock self energizing drying and incinerating System and method for of the invention, while realizing good material treatment effect, wet stock is dried with the heat that material itself burns generation, material itself calorific value can be improved, improve energy efficiency, optimization processing effect cuts operating costs without providing external auxiliary energy.
Description
Technical field
The present invention relates to a kind of low heat value wet stock self energizing drying and incinerating System and method fors, belong to solid waste processing
Technical field.
Background technique
Life, industrial solid castoff refer to solid-state, the semisolid discarded object matter that the mankind generate in industry life.It will contain
There is the solid waste of high heating value to carry out energy regenerating and efficiently use imperative, the environment that can adequately protect is again abundant
The utilizable energy contained using rubbish.The calorific value of measurement house refuse and solid waste is mainly used for solid waste, rubbish
The environment protection significance for recycling aspect, takes according to the measurement result of its calorific value in conjunction with the design value range of related specifications
Corresponding processing scheme, such as the feasibility of waste incineration and generating electricity, the feasibility etc. that rubbish is made compost.But theoretically calorific value reaches
More than 1000 kilocalories, 85% or more mass dryness fraction just can be carried out burning disposal, but there is also a large amount of multiple types in actual production life
Solid waste cannot get effective processing mode, the reason is that this kind of solid waste low heat value, high ash content, and often companion
With high moisture content, the so high high ash content of moisture content low heat value has not had the economic value of power generation by waste combustion, conventional
The anhydration and incineration of change cannot reuse, and solid waste piles up naturally and can cause considerable damage to ecological environment, therefore
It is highly important for seeking a kind of relatively cheap harmless treatment mode.
This patent refers to a kind of house refuse hot wind coupling life of 201610629633.8 Chinese patent application of Patent No.
The processing method of object desiccation.
A kind of processing method of house refuse hot wind coupled biological desiccation, which is characterized in that steps are as follows:
1 stage heating domestication
It is 5-10cm as the material of domestication using Domestic garbage crushing to partial size, utilizes the indigenous microorganisms in house refuse
Or the microorganism in aerobic dewatered sludge is tamed；House refuse initial aqueous rate is adjusted to 60-65%, is passed through low speed heat
Wind guarantees material aerobic environment；Acclimation temperature is set by hot wind coupling, initial acclimation temperature is set as 35 DEG C, stops 36-
After 48h, acclimation temperature is reset to 40 DEG C, and after stopping 18-24h, acclimation temperature is further set to 45 DEG C, stops 10-12h
Afterwards, acclimation temperature is finally set as 50 DEG C, tames 10-12h, the material microbial activity after domestication is higher, oxygen consumption speed
Rate is 30mg/g VSh or more, can be used for biological dewatered inoculation, realizes the domestication enrichment of thermophilic high-temperature strain；Stage heating is tamed and dociled
During change, the daily turning of material 2 times avoids material local anaerobic from being acidified, and microorganism is promoted to be uniformly distributed；Material stop 3-4
It, domestication terminates, and will be used to be inoculated in the material input desiccation reactor after domestication, desiccation reactor is emptied in time and is added new
Fresh material material repeats above-mentioned domestication process, guarantees the continuous operation of entire domestication seeded process；
The coupling inoculation desiccation of 2 hot winds
After being 5-10cm by Domestic garbage crushing to partial size, mixed with the material after domestication according to mass ratio 3:1, mixture
Material filling is completed, and intermittent aeration is carried out, and so that mixed material temperature is maintained 50 DEG C or more by the booster action that hot wind couples, together
When microbial fermentation heat production and adjust frequency conversion fan ventilation and heat under the action of, control mixed material temperature in 50-60 DEG C
Continuous operation, daily turning 2 times promote the quick desiccation of house refuse in mixed material；House refuse moisture content is handled in 4 days
When lower than 25%, the house refuse in desiccation reactor after desiccation empties in time, domestication material continue to be mixed into after being added it is broken after
Primary house refuse realizes process continuous operation.
Summary of the invention
In view of the shortcomings of the prior art with economy the considerations of, the object of the present invention is to provide a kind of low heat value wet stocks certainly
Energy supply energy-saving drying incineration system and method burn generation with material itself while realizing good material treatment effect
Heat wet stock is dried, can improve material itself calorific value, burn sufficiently, improve energy efficiency, optimization processing effect
Fruit, and without providing external auxiliary energy, it cuts operating costs.
Technical solution of the present invention:
A kind of low heat value wet stock self energizing drying and incinerating system, including biological heat desiccation apparatus, incinerator, gas-solid point
It is net from circulator, level-one heat-exchange device, second level heat-exchange device, condensation heat exchange device, condensed water collecting device and flue gas
Makeup is set；
The biological heat desiccation apparatus is equipped with wet stock entrance, dry material outlet, hot air inlet and damp-heat air and goes out
Mouthful, dry material outlet is connected with the dry material entrance of incinerator, the hot and humid air outlet and condensation heat exchange device after drying
Damp-heat air entrance is connected；
The incinerator is equipped with dry material entrance, First air entrance, Secondary Air entrance, grey slag outlet, burner hearth and goes out
Mouth and multi-cycle separation ash entrance, furnace outlet are connected with the high temperature bulky grain smoke inlet of gas solid separation circulator；
The gas solid separation circulator is equipped with high temperature bulky grain smoke inlet, the outlet of multi-cycle separation ash and high-temperature flue gas
The multi-cycle separation ash outlet of outlet, bottom is connected with the multi-cycle separation ash entrance of incinerator, high-temperature flue gas outlet and level-one heat
The high-temperature flue gas entry of switch is connected；
The level-one heat-exchange device be equipped with high-temperature flue gas entry, medium temperature exhanst gas outlet, desiccant dehumidification air intake and
High temperature air outlet, medium temperature exhanst gas outlet are connected with the medium temperature smoke inlet of second level heat-exchange device, and high temperature air is exported and burnt
The Secondary Air entrance for burning device is connected；
It is empty that the second level heat-exchange device is equipped with medium temperature smoke inlet, low-temperature flue gas outlet, preheated air entrance and heat
Gas outlet, low-temperature flue gas outlet are connected with the low-temperature flue gas entrance of flue gas purification device, and hot air outlet and biological heat drying fill
The hot air inlet set is connected and is connected with parallel way with the First air entrance of incinerator bottom；
The condensation heat exchange device is equipped with cool air inlet, preheated air outlet, damp-heat air entrance, desiccant dehumidification sky
Gas outlet and condensation-water drain, desiccant dehumidification air outlet slit is connected with the desiccant dehumidification air intake of level-one heat-exchange device, cold
Condensate outlet is connected with the condensing water inlet of condensed water collecting device, and preheated air outlet and the preheating of second level heat-exchange device are empty
Gas entrance is connected.
A kind of low heat value wet stock self energizing drying and incinerating method, steps are as follows:
(1) low heat value wet stock is sent into biological heat desiccation apparatus, incinerator is sent into after biological heat drying and is carried out
Full combustion, the high-temperature flue gas of generation enter gas solid separation circulator and carry out solid gas separation, the uncombusted feed separation of bulky grain
After send incinerator back to and burn away, the high-temperature flue gas after separation successively passes through level-one heat-exchange device, second level heat-exchange device
After cooling, into flue gas purification device processing it is up to standard after, be discharged into atmosphere；
(2) cold air enters condensation heat exchange device and damp-heat air exchange heat after heating up preheating, and preheated air enters two
Grade heat-exchange device and high-temperature flue gas carry out heat exchange heating again, and hot-air a part of generation is as First air from incinerator bottom
Portion is blown into, and is formed damp-heat air after the dry wet stock of another part hot-air and is entered condensation heat exchange device to carry out heat exchange cooling de-
It is wet, after the air after heat exchange enters the heat exchange heating of level-one heat-exchange device, enter in incinerator as Secondary Air；
(3) condensed water that condensation heat exchange device generates enters condensed water collecting device, qualified discharge after processing.
Beneficial effects of the present invention:
1, good material treatment effect is realized；
2, wet stock is dried with the heat that material itself burns generation, material itself calorific value can be improved, burned
Sufficiently, energy efficiency, optimization processing effect are improved；
3, it without providing external auxiliary energy, cuts operating costs.
Detailed description of the invention
Fig. 1 is the device of the invention flow diagram.
In figure: 1 biological heat desiccation apparatus；2 incinerators；3 gas solid separation circulator；
4 level-one heat-exchange devices；5 second level heat-exchange devices；6 condensation heat exchange devices；
7 condensed water collecting devices；8 flue gas purification devices；1a wet stock entrance；The outlet of 1b dry material；
1c hot air inlet；1d hot and humid air outlet；2a dry material entrance；2b ash slag outlet；
2c Secondary Air entrance；2d First air entrance；2e furnace outlet；2f multi-cycle separation ash entrance；
3a high temperature bulky grain smoke inlet；The outlet of 3b multi-cycle separation ash；3c high-temperature flue gas outlet；
4a high-temperature flue gas entry；4b medium temperature exhanst gas outlet；4c desiccant dehumidification air intake；The outlet of 4d high temperature air；
5a medium temperature smoke inlet；The outlet of 5b low-temperature flue gas；5d preheated air entrance；5c hot air outlet；
6a cool air inlet；The outlet of 6b preheated air；6c damp-heat air entrance；6d condensation-water drain；
6e desiccant dehumidification air outlet slit；7a condensing water inlet；8a low-temperature flue gas entrance；8b clean air outlet.
Specific embodiment
Below in conjunction with attached drawing and technical solution, specific embodiments of the present invention are further illustrated.
Embodiment
A kind of low heat value wet stock self energizing drying and incinerating system, including biological heat desiccation apparatus 1, incinerator 2, gas-solid
Separating circulating device 3, level-one heat-exchange device 4, second level heat-exchange device 5, condensation heat exchange device 6, condensed water collecting device 7 and
Flue gas purification device 8；
The biological heat desiccation apparatus 1 is equipped with wet stock entrance 1a, dry material exports 1b, hot air inlet 1c and damp and hot
Air outlet slit 1d, dry material outlet 1b be connected with the dry material entrance 2a of incinerator 2, dry after hot and humid air outlet 1d and
The damp-heat air entrance 6c of condensation heat exchange device 6 is connected；
The incinerator 2 is equipped with dry material entrance 2a, First air entrance 2d, Secondary Air entrance 2c, grey slag outlet
The high temperature bulky grain flue gas of 2b, furnace outlet 2e and multi-cycle separation ash entrance 2f, furnace outlet 2e and gas solid separation circulator 3
Entrance 3a is connected；
The gas solid separation circulator 3 is equipped with high temperature bulky grain smoke inlet 3a, multi-cycle separation ash outlet 3b and height
The multi-cycle separation ash outlet 3b of warm exhanst gas outlet 3c, bottom are connected with the multi-cycle separation ash entrance 2f of incinerator 2, high-temperature flue gas
Outlet 3c is connected with the secondary high-temperature flue gas entry 4a of level-one heat-exchange device 4；
The level-one heat-exchange device 4 is equipped with high-temperature flue gas entry 4a, medium temperature exhanst gas outlet 4b, desiccant dehumidification air and enters
Mouth 4c and high temperature air export 4d, and medium temperature exhanst gas outlet 4b is connected with the medium temperature smoke inlet 5a of second level heat-exchange device 5, high temperature
Air outlet slit 4d is connected with the Secondary Air entrance 2c of incinerator 2；
The second level heat-exchange device 5 is equipped with medium temperature smoke inlet 5a, low-temperature flue gas exports 5b, preheated air entrance 5d
And hot air outlet 5c, low-temperature flue gas outlet 5b are connected with the low-temperature flue gas entrance 8a of flue gas purification device 8, hot air outlet 5c
It is connected with the hot air inlet 1c of biological heat desiccation apparatus 1 and with the First air entrance 2d of parallel way and 2 bottom of incinerator
It is connected；
The condensation heat exchange device 6 is equipped with cool air inlet 6a, preheated air outlet 6b, damp-heat air entrance 6c, does
Dry dehumidified air exports 6e and condensation-water drain 6d, the desiccant dehumidification of desiccant dehumidification air outlet slit 6e and level-one heat-exchange device 4
Air intake 4c is connected, and condensation-water drain 6d is connected with the condensing water inlet 7a of condensed water collecting device 7, and preheated air exports 6b
It is connected with the preheated air entrance 5d of second level heat-exchange device 5.
A kind of low heat value wet stock self energizing drying and incinerating method, steps are as follows:
(1) by low heat value wet stock be sent into biological heat desiccation apparatus 1, after biological heat drying be sent into incinerator 2 into
Row full combustion, the high-temperature flue gas of generation enter gas solid separation circulator 3 and carry out solid gas separation, the uncombusted material of bulky grain point
It sends incinerator 2 back to from after to burn away, the high-temperature flue gas after separation successively passes through level-one heat-exchange device 4, second level heat exchange
Device 5 cool down after, into flue gas purification device 8 handle it is up to standard after, be discharged into atmosphere；
(2) cold air enters condensation heat exchange device 6 and damp-heat air exchange heat after heating up preheating, and preheated air enters two
Grade heat-exchange device 5 and high-temperature flue gas carry out heat exchange heating again, and hot-air a part of generation is as First air from incinerator 2
Bottom is blown into, and is formed damp-heat air after the dry wet stock of another part hot-air and is entered condensation heat exchange device 6 and carries out heat exchange cooling
Dehumidification enters in incinerator 2 after the air after heat exchange enters the heat exchange heating of level-one heat-exchange device 4 as Secondary Air；
(3) condensed water that condensation heat exchange device 6 generates enters condensed water collecting device 7, qualified discharge after processing.
Claims (2)
1. a kind of low heat value wet stock self energizing drying and incinerating system, which is characterized in that the low heat value wet stock self energizing
Drying and incinerating system includes biological heat desiccation apparatus (1), incinerator (2), gas solid separation circulator (3), level-one heat exchange
Device (4), second level heat-exchange device (5), condensation heat exchange device (6), condensed water collecting device (7) and flue gas purification device (8)；
The biological heat desiccation apparatus (1) be equipped with wet stock entrance (1a), dry material outlet (1b), hot air inlet (1c) and
Hot and humid air outlet (1d), dry material outlet (1b) are connected with the dry material entrance (2a) of incinerator (2), damp and hot after drying
Air outlet slit (1d) is connected with the damp-heat air entrance (6c) of condensation heat exchange device (6)；
The incinerator (2) is equipped with dry material entrance (2a), First air entrance (2d), Secondary Air entrance (2c), lime-ash row
Export (2b), furnace outlet (2e) and multi-cycle separation ash entrance (2f), furnace outlet (2e) and gas solid separation circulator (3)
High temperature bulky grain smoke inlet (3a) is connected；
The gas solid separation circulator (3) be equipped with high temperature bulky grain smoke inlet (3a), multi-cycle separation ash outlet (3b) and
High-temperature flue gas outlet (3c), multi-cycle separation ash entrance (2f) phase of the outlet of multi-cycle separation ash (3b) and incinerator (2) of bottom
Even, high-temperature flue gas outlet (3c) is connected with the high-temperature flue gas entry (4a) of level-one heat-exchange device (4)；
The level-one heat-exchange device (4) is equipped with high-temperature flue gas entry (4a), medium temperature exhanst gas outlet (4b), desiccant dehumidification air
Entrance (4c) and high temperature air outlet (4d), the medium temperature smoke inlet of medium temperature exhanst gas outlet (4b) and second level heat-exchange device (5)
(5a) is connected, and high temperature air outlet (4d) is connected with the Secondary Air entrance (2c) of incinerator (2)；
The second level heat-exchange device (5) is equipped with medium temperature smoke inlet (5a), low-temperature flue gas exports (5b), preheated air entrance
(5d) and hot air outlet (5c), low-temperature flue gas outlet (5b) are connected with the low-temperature flue gas entrance (8a) of flue gas purification device (8),
Hot air outlet (5c) is connected and with the hot air inlet (1c) of biological heat desiccation apparatus (1) with parallel way and incinerator
(2) the First air entrance (2d) of bottom is connected；
The condensation heat exchange device (6) is equipped with cool air inlet (6a), preheated air exports (6b), damp-heat air entrance
(6c), desiccant dehumidification air outlet slit (6e) and condensation-water drain (6d), desiccant dehumidification air outlet slit (6e) and level-one heat exchange fill
The desiccant dehumidification air intake (4c) for setting (4) is connected, the condensing water inlet of condensation-water drain (6d) and condensed water collecting device (7)
(7a) is connected, and preheated air outlet (6b) is connected with the preheated air entrance (5d) of second level heat-exchange device (5).
2. a kind of low heat value wet stock self energizing drying and incinerating method, which is characterized in that steps are as follows:
1) low heat value wet stock is sent into biological heat desiccation apparatus (1), incinerator (2) is sent into after biological heat drying and are carried out
Full combustion, the high-temperature flue gas of generation enter gas solid separation circulator (3) and carry out solid gas separation, the uncombusted material of bulky grain point
It sends incinerator (2) back to from after to burn away, the high-temperature flue gas after separation successively passes through level-one heat-exchange device (4), second level heat
Switch (5) cooling after, into flue gas purification device (8) processing it is up to standard after, be discharged into atmosphere；
2) cold air enters condensation heat exchange device (6) and damp-heat air exchange heat after heating up preheating, and preheated air enters second level
Heat-exchange device (5) and high-temperature flue gas carry out heat exchange heating again, and hot-air a part of generation is as First air from incinerator
(2) bottom is blown into, and formation damp-heat air enters condensation heat exchange device (6) and exchanges heat after the dry wet stock of another part hot-air
Cool down dehumidification, after the air after heat exchange cooling dehumidification enters level-one heat-exchange device (4) heat exchange heating, enters as Secondary Air and burns
It burns in device (2)；
3) condensed water that condensation heat exchange device (6) generates enters condensed water collecting device (7), qualified discharge after processing.
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| CN201810000954.0A CN108194929B (en) | 2018-01-02 | 2018-01-02 | A kind of low heat value wet stock self energizing drying and incinerating System and method for |
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| CN201810000954.0A CN108194929B (en) | 2018-01-02 | 2018-01-02 | A kind of low heat value wet stock self energizing drying and incinerating System and method for |
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| CN108194929B true CN108194929B (en) | 2019-06-21 |
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| CN109099432B (en) * | 2018-08-21 | 2020-04-14 | 安徽艾珂尔制药有限公司 | Medical waste treatment device |
| CN109185895A (en) * | 2018-11-02 | 2019-01-11 | 重庆富燃科技股份有限公司 | A kind of system and method handling the aging rubbish of landfill yard |
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| US5098481A (en) * | 1990-03-06 | 1992-03-24 | Reed & Graham, Inc. | Soil remediation process and system |
| RU2159392C1 (en) * | 2000-05-25 | 2000-11-20 | Общество с ограниченной ответственностью "ЭКОСЕРВИС ПРИМ" | Method of fired decontamination of liquid wastes |
| CN105948459A (en) * | 2016-05-19 | 2016-09-21 | 山东齐盛机电工程有限公司 | Method using drying and incineration to treat sludge |
| CN206001499U (en) * | 2016-07-29 | 2017-03-08 | 光大环境科技（中国）有限公司 | For removing device and the power plant stack gas processing system of power plant chimney white cigarette |
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