CN203976738U - Gas producing device and fine coal destructive distillation device - Google Patents
Gas producing device and fine coal destructive distillation device Download PDFInfo
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- CN203976738U CN203976738U CN201420265818.1U CN201420265818U CN203976738U CN 203976738 U CN203976738 U CN 203976738U CN 201420265818 U CN201420265818 U CN 201420265818U CN 203976738 U CN203976738 U CN 203976738U
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Abstract
The utility model relates to gas producing device and fine coal destructive distillation device, and related gas producing device comprises regenerator, raw gas in regenerator by pyrolysis, described raw gas be in dry distillation of coal process, produce not through purifying and the mixed gas of tar removing; Related fine coal destructive distillation device comprises the regenerator that raw coal drying oven, gas retort and raw gas pyrolysis are used and the hotblast stove that heat is provided, and the raw gas not purifying that the raw coal carbonization of take obtains obtains high-quality coal gas through pyrolysis in regenerator as raw material.The utility model adopts raw gas is carried out to pyrolysis production coal gas, water vapor in raw gas and coke powder water generation reaction coal gas, tar is cracked into coal gas simultaneously, achieve many things at one stroke, and it is low that the related method and apparatus of the utility model has energy consumption, to invest lowly, caloric power of gas is high, semicoke ash content is low, and coal sub-prime transforms the low advantage of cost.
Description
Technical field
The utility model relates to coal carbonization technology, is specifically related to gas producing device and fine coal destructive distillation device.
Background technology
It is that coal transforms important technique approach that gasification is prepared coal gas, adopts High Temperature High Pressure coal gasifying process, and equipment is complicated, and scale of investment is large; Adopt normal pressure gas metallization processes, pollute greatly, coal low conversion rate, caloric power of gas is low.
By pyrolysis of coal, obtain coal gas investment little, cost is low, but traditional pyrolysis of coal is mostly internal heat type technique, and in coal gas, a nitrogen content is high, and caloric power of gas is low.
Traditional external-heat pyrolysis of coal gained caloric power of gas is high, but gas yield is low, and thermo-efficiency is low, tar trapping complex process.
Just traditional gaseous heat-carrier pyrolyzing coal often needs the coupling with gasification to have practicality, in order to obtain tar, reheats after gaseous heat-carrier is cooling, energy consumption is high, uneconomical.
How by directly obtaining semicoke and coal gas after pyrolysis of coal, realizing sub-prime conversion, simplify technique, reduce investment, reduce pollution, is that the problem that coal gas faces is prepared in pyrolysis of coal.
Summary of the invention
for defect or the deficiency of prior art, one of the purpose of this utility model is to provide a kind of gas producing device.
For this reason, the gas producing device that the utility model provides comprises regenerator, raw gas in regenerator by pyrolysis, described raw gas be in dry distillation of coal process, produce not through purifying and the mixed gas of tar removing.
for defect or the deficiency of prior art, two of the purpose of this utility model is to provide a kind of fine coal destructive distillation device.
For this reason, the fine coal destructive distillation device that the utility model provides comprises:
Drying oven is the rotary kiln of external-heat fume indirect heating, for the preheating and drying of raw coal;
Gas retort, the rotary kiln for the internal heat type of gas heating combines with the heating of flue gas external-heat, for the dry distillation of coal, produces semicoke and raw gas;
Regenerator, for hot flue gas-coal gas gas regenerator interchanger, for raw gas is carried out to pyrolysis, produces coal gas;
Hotblast stove is coal-fired high temperature hot-blast furnace;
The raw gas of producing in described gas retort is conveyed into regenerator and carries out pyrolysis production coal gas;
The coal gas part producing in described regenerator is conveyed into the raw coal of described gas retort after to drying and preheating and carries out direct heating, and another part is coal gas product; The hot flue gas part simultaneously producing in hotblast stove is conveyed into the raw coal of gas retort after to drying and preheating and carries out indirect heating, and another part is used for heating regenerator.
Preferably, the hot flue gas after described regenerator heat exchange and the hot flue gas that goes out gas retort are conveyed into drying oven raw coal are carried out to indirect heating;
Preferably, the raw gas produced in described gas retort is discharged after gas retort after fly-ash separator is isolated the coke powder dust that particle is greater than 10 microns and is conveyed into regenerator pyrolysis heat exchange, be heated cracking and obtain coal gas, wherein, the coal gas of 80% mass percent is sent into pyrolysis oven, and the coal gas of 20% mass percent is recovered.
Preferably, described regenerator comprises two regenerator monomers, and these two regenerator monomers adopt the mode of regularly commutation to realize the heat exchange of hot flue gas and coal gas.
compared with prior art, the beneficial effects of the utility model are:
(1) in raw gas, contain water vapour, finely-ground coke, scrubbed gas and tar, raw gas is carried out to pyrolysis and produce coal gas, the water vapor in raw gas and coke powder water generation reaction coal gas, tar is cracked into coal gas simultaneously, achieves many things at one stroke.
(2) utilize regenerator as the equipment of raw gas pyrolysis, carrier regenerator wherein can play the effect of filtration to the dust in coal gas, can obtain pure coal gas.
(3) heat-storing material in regenerator adopts the ceramic particle with coke tar cracking catalysis, can suitably reduce cracking temperature, and raw gas cracking degree is high.
(4) the pre-thermal recovery external-heat of raw coal is dried, and avoids drying course raw coal on fire, can suitably improve preheating temperature simultaneously, alleviates the thermal load of gas retort, can be preheating to and approach 300 degree.
(5) heating gas, as the direct heating thermal barrier of the dry distillation of coal, recycles, and it is convenient to carry, and adopts external-heat heating pyrolysis oven simultaneously, interior external heat, and thermo-efficiency is high, and output is large.
(6) coal dust remaining in regenerator is burned, reduces fuel cost, and after regenerator heat exchange, fume afterheat is used for drying raw coal, and thermal utilization is high.
(7) tar yield is low, and purification system is simple, there is no sewage discharge, and technique is simple.
To sum up, the device of coal gas is prepared in pyrolysis of coal of the present utility model, and energy consumption is low, invests lowly, and caloric power of gas is high, and semicoke ash content is low, and it is low that coal sub-prime transforms cost.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the utility model is further explained in detail to explanation.
Fig. 1 is fine coal destructive distillation device structure reference view of the present utility model;
Fig. 2 is the fine coal destructive distillation device structure reference view of embodiment;
Each coded representation in figure: 1-drying oven, 2-gas retort, 3-regenerator, 4-tornado dust collector, 5-coal gas cooling heat exchanger, 6-hotblast stove, 7-recirculation blower, 8-raw coal lifting gear.
Embodiment
Except as otherwise noted, the implication of each term described in the utility model is those skilled in the art's routine understanding.
In raw gas, contain scrubbed gas and a large amount of finely-ground coke and tar, for obtaining high yield and high-quality coal gas, the utility model takes the method for raw gas being done to further pyrolysis to produce coal gas, and the coal gas purity that the method is obtained is high, and dust and tar content are low.
The heat-storing material of filling in the utility model regenerator can be the conventional heat-storing material that chemical field is used, and preferably thermal expansivity (room temperature～1000 ℃) is less than 5 * 10
-6the ceramic honeycomb fire resistant materials of ∕ K, this material possesses pyrolysis catalysts function; Meanwhile, consider the filtration to dust, the porosity ranges of heat-storing material is 30%～63%, make heat-storing material possess Bed Filtration function simultaneously, consider heat storage own wt and height problem, its refractoriness under load should be greater than 1350 ℃, and while guaranteeing to use, heat storage can not collapse.
Consider the temperature requirement problem after gaseous heat-carrier heat exchange, the temperature in regenerator is controlled at 500～1000 ℃; Consider heat storage heat storage capacity problem, raw gas flow (BM simultaneously
3∕ H) with the specific surface area (M of heat-storing material
2) be related to that ratio is: (3～8): 1, flow corresponding to the specific surface area of every square metre is (3～8) BM
3∕ H, can better guarantee that the gaseous heat-carrier after heat exchange reaches the needed temperature of pyrolysis of coal like this.
The coal gas part producing in regenerator of the present utility model is conveyed into the raw coal of described gas retort after to drying and preheating and carries out direct heating, for gaseous heat-carrier circulating gas, preferably, circulating gas amount is four times of pyrolysis of coal gas production rate, and another part is the coal gas product of the coal gas amount equivalent of pyrolysis of coal generation; The hot flue gas part simultaneously producing in hotblast stove is conveyed into the raw coal of gas retort after to drying and preheating and carries out indirect heating, and another part is used for heating regenerator.
Below the specific embodiment that contriver provides, so that the technical solution of the utility model is further explained to explanation.
embodiment:
With reference to figure 1 and Fig. 2, the device of this embodiment comprises drying oven 1, gas retort 2, regenerator 3 and hotblast stove 6;
Drying oven 1 is flue gas external-heat drying oven, gas retort 2 is the solid of revolution stove of external-heat and internal heat type combination, regenerator 3 comprises two regenerator monomers, the structure of two monomers is identical, include container body and the heat-storing material that is filled in container body, two regenerator monomers adopt the modes of regularly commutation to realize the heat exchange of hot flue gas and coal gas;
Wherein drying oven 1 is positioned at the top of gas retort 2, and drying oven 1 outlet is connected with gas retort 2 imports, 4 imports are connected with tornado dust collector in gas retort 2 raw gas outlets, 7 imports are connected with recirculation blower in tornado dust collector 4 outlets, 3 imports are connected with regenerator in recirculation blower 7 outlets, and 2 gas inlets are connected with gas retort in regenerator 3 outlets.
In addition, the hot exhanst gas outlet of regenerator 3 and the hot exhanst gas outlet of gas retort 2 are connected with the hot flue gas of drying oven 1.Regenerator 3 heating carry out the hotblast stove 6 of spontaneous combustion coal by hot flue gas and gas retort 2 indirect heating with hot flue gas, go out the hot flue gas of regenerator 3 for gas retort 2 external-heat heating.
Concrete distillation process is as follows:
Raw coal is the fine coal that particle is less than 0-30mm.Raw coal is promoted to drying oven 1 through raw coal lifting gear 8.
In drying oven 1, gas approach temperature is controlled at 500-600 ℃, and fine coal stops 30-60 minute in drying oven, and temperature out is controlled within the scope of 25-300 ℃.
In the inner core of gas retort 2, be connected with coal gaseous heat-carrier and by the coal of destructive distillation, the flue between urceolus and inner core is connected with the flue gas thermal barrier that indirect heating is used, the type of heating combining by outer heat and thermal barrier carries out destructive distillation heating to fine coal.The 250-300 of preheating
oCdry coal and be heated to 900
oCcoal gas gas retort in heat exchange, be heated to the flue gas of 1000 ℃ simultaneously and enter pyrolysis oven chuck the coal of inner core is heated, fine coal stops 20-40 minutes and becomes semicoke in gas retort, the temperature that goes out gas retort 2 semicokes is 400-550
oC, going out gas retort flue-gas temperature is 600 ℃, gas retort rotating speed 0.5-2 rev/min, and the volume filling ratio of material in rotary kiln is 30%-40%.Semicoke carries out quenching processing in cool furnace, and quenching is that indirect water-cooling quenching is main, and the quenching of auxiliary water spray steam combines, and semicoke dry method is discharged of the coke.
The raw gas that carries tar dust goes out gas retort 2 temperature and is controlled at 350-450 ℃, after tornado dust collector 4 dedustings, enter coal gas recirculation blower 7, coal gas and tar dust mixture are sent into to be preheating to medial temperature be that the regenerator monomer of 1000 ℃ of left and right carries out heat exchange, it is 900 ℃ that coal gas goes out regenerator medial temperature, and flue gas goes out regenerator and is controlled at 600 ℃.The hot flue gas heating heat-storing material of regenerator and cooling heat storage reversal interval time of coal gas are 20-40 minute.
The coal gas of high temperature that goes out regenerator 80% mass percent recycles, and the coal gas of 20% mass percent is cooling rear as output coal gas at coal gas cooling heat exchanger 5 and air heat-exchange, is combustion air after preheating of air.
The detection that the quality of the coal gas that the coal gas that utility model people produces traditional technology (raw gas being carried out to dedusting, dry cooled coal gas) and this embodiment produce is carried out, detected result is as shown in table 1.
Table 1(wt/wt)
| Project | Water vapour | Dust Capacity | Tar | Scrubbed gas |
| The coal gas that traditional technology is produced | 5% | 10% | 30% | 55% |
| The coal gas that the utility model is produced | 1% | 3% | 3% | 93% |
Claims (5)
1. a gas producing device, is characterized in that, device comprises regenerator, raw gas in regenerator by pyrolysis, described raw gas be in dry distillation of coal process, produce not through purifying and the mixed gas of tar removing.
2. a fine coal destructive distillation device, is characterized in that, this device comprises:
Drying oven is the rotary kiln of external-heat fume indirect heating, for the preheating and drying of raw coal;
Gas retort, the rotary kiln for the internal heat type of gas heating combines with the heating of flue gas external-heat, for the dry distillation of coal, produces semicoke and raw gas;
Regenerator, for hot flue gas-coal gas gas regenerator interchanger, for raw gas is carried out to pyrolysis, produces coal gas;
Hotblast stove is coal-fired high temperature hot-blast furnace;
The raw gas of producing in described gas retort is conveyed into regenerator and carries out pyrolysis production coal gas;
The coal gas part producing in described regenerator is conveyed into the raw coal of described gas retort after to drying and preheating and carries out direct heating, and another part is coal gas product; The hot flue gas part simultaneously producing in hotblast stove is conveyed into the raw coal of gas retort after to drying and preheating and carries out indirect heating, and another part is used for heating regenerator.
3. fine coal destructive distillation device as claimed in claim 2, is characterized in that, the hot flue gas after described regenerator heat exchange is conveyed into drying oven with the hot flue gas that goes out gas retort raw coal is carried out to indirect heating;
4. fine coal destructive distillation device as claimed in claim 2, it is characterized in that, the raw gas produced in described gas retort is discharged after gas retort after tornado dust collector are isolated the coke powder dust that particle is greater than 10 microns and is conveyed into regenerator pyrolysis heat exchange, be heated cracking and obtain coal gas, wherein, the coal gas of 80% mass percent is sent into pyrolysis oven, and the gas yield of 20% mass percent is recovered.
5. fine coal destructive distillation device as claimed in claim 2, is characterized in that, described regenerator comprises two regenerator monomers, and these two regenerator monomers adopt the mode of regularly commutation to realize the heat exchange of hot flue gas and coal gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420265818.1U CN203976738U (en) | 2014-05-22 | 2014-05-22 | Gas producing device and fine coal destructive distillation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420265818.1U CN203976738U (en) | 2014-05-22 | 2014-05-22 | Gas producing device and fine coal destructive distillation device |
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| Publication Number | Publication Date |
|---|---|
| CN203976738U true CN203976738U (en) | 2014-12-03 |
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| CN201420265818.1U Expired - Fee Related CN203976738U (en) | 2014-05-22 | 2014-05-22 | Gas producing device and fine coal destructive distillation device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980951A (en) * | 2014-05-22 | 2014-08-13 | 长安大学 | Method and device for producing coal gas by pulverized coal pyrolysis |
| CN104789246A (en) * | 2015-04-13 | 2015-07-22 | 陕西煤业化工集团神木天元化工有限公司 | Low-rank coal powder rotary drying technology with dust removing function |
| CN104877691A (en) * | 2015-04-29 | 2015-09-02 | 武汉光谷蓝焰新能源股份有限公司 | Biomass drum-type carbonization furnace |
| CN107267170A (en) * | 2017-08-04 | 2017-10-20 | 陈军武 | Biomass carbonization pyrolysis installation |
| CN109652131A (en) * | 2018-11-30 | 2019-04-19 | 浙江天禄环境科技有限公司 | A kind of low order coal gasification reduction prepares the method and system of synthesis gas |
| CN110066693B (en) * | 2019-04-25 | 2021-04-16 | 上海电气集团股份有限公司 | Two-stage biomass gasification power generation system and working condition switching method thereof |
-
2014
- 2014-05-22 CN CN201420265818.1U patent/CN203976738U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980951A (en) * | 2014-05-22 | 2014-08-13 | 长安大学 | Method and device for producing coal gas by pulverized coal pyrolysis |
| CN104789246A (en) * | 2015-04-13 | 2015-07-22 | 陕西煤业化工集团神木天元化工有限公司 | Low-rank coal powder rotary drying technology with dust removing function |
| CN104877691A (en) * | 2015-04-29 | 2015-09-02 | 武汉光谷蓝焰新能源股份有限公司 | Biomass drum-type carbonization furnace |
| CN107267170A (en) * | 2017-08-04 | 2017-10-20 | 陈军武 | Biomass carbonization pyrolysis installation |
| CN109652131A (en) * | 2018-11-30 | 2019-04-19 | 浙江天禄环境科技有限公司 | A kind of low order coal gasification reduction prepares the method and system of synthesis gas |
| CN110066693B (en) * | 2019-04-25 | 2021-04-16 | 上海电气集团股份有限公司 | Two-stage biomass gasification power generation system and working condition switching method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20170522 |