CN1587354A - Intermittent gas making method and device with bituminous coal fixing layer - Google Patents
Intermittent gas making method and device with bituminous coal fixing layer Download PDFInfo
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- CN1587354A CN1587354A CN 200410060406 CN200410060406A CN1587354A CN 1587354 A CN1587354 A CN 1587354A CN 200410060406 CN200410060406 CN 200410060406 CN 200410060406 A CN200410060406 A CN 200410060406A CN 1587354 A CN1587354 A CN 1587354A
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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
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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Abstract
The intermittent gas generator with bituminous coal in fixed layer has two intermittent fixed bed gas generators in the basically same structure, A and B, operating alternately for generating gas in the right direction and generating gas in the opposite direction. The upward blasting steam enters the gas generator A from bottom to top to generate water gas and the water gas together with the downward blasting steam enters the gas generator B, so that tar and organic matter contained in water gas are cracked in the gasifying layer of the gas generator B without entering the final water gas product. The technological scheme of the present invention solves the problem of using bituminous coal in the intermittent fixed bed gas generator to raise quality of water gas product and low production cost.
Description
Technical field
The present invention relates to a kind of production method of service water coal gas, particularly a kind of is the intermittent gasification of fixed layer method of raw material and for implementing the system gas equipment of this method with bituminous coal.
Background technology
At present, China's production synthetic ammonia, nitrogenous fertilizer are still many is raw material with hard coal or coke.Along with the continuous rise of energy prices, give originally and account for the Ammonia Production enterprise increase more heavy pressure of total cost of production more than 60% with regard to raw material.If will reduce production costs effectively, must seek a kind of energy substitution hard coal or coke of low price.Personnel's nature rests on eye and contains on abundant, the cheap bituminous coal in the industry.But there is the bigger technical problem of difficulty with the cigarette gas maked coal.This is because bituminous coal in generating course of gas, can produce a large amount of tar, organism and dust.Tar and dust be blocking pipe very easily, removing pollutant solution; Tar and organism can make at the coal that touches of back operation poisons, or charing on pyritous stove, machine, tower, gives in the back operation and causes serious consequence, and production can't normally be carried out.This is that bituminous coal is failed the major cause used for a long time on the fixed bed intermittent gas furnace.
Gasification technologies such as the Texaco of Yin Jining, shell, grace mainly were that bituminous coal is placed in the body of heater with powdery or coal water slurry form in recent years, and bed temperature is between 1000-1600 ℃.Under the high purity oxygen condition, react and produce coal gas with coal.But the technology one-time investment that this class is introduced is very big, only with regard to the facility investment aspect, and a cover 40000m
3The gas making equipment of/h, one-time investment are at least more than 6,000 ten thousand yuan; Build to production cycle about about 2 years, this makes many enterprises be expected and can not ask.
In the practice process of fixed bed batch furnace gas making, to find to blow down to contain tar and organism in the coal gas hardly, dust content is reduction significantly also.According to this phenomenon, can seek a kind ofly to be raw material with bituminous coal and intermittently to make at fixed bed and can make tar, organism generation cracked producing gas method in the gas equipment and for implementing this method, with few investment, short transformation cycle to the existing fixed bed intermittently producer equipment carry out improved problem pendulum in face of many insiders.
Summary of the invention
Purpose one of the present invention, to provide a kind of bituminous coal intermittent gasification of fixed layer method, be to be that the raw material of making gas reduces production costs with bituminous coal, and make tar in the water-gas, organism under blow over cracking in the gasification layer in the journey, for normally removing a hidden danger in the back operation.
Purpose two of the present invention, be to provide a kind of for implementing the system gas equipment of bituminous coal intermittent gasification of fixed layer method, this system gas equipment is to utilize existing immovable bed intermittent gas furnace to transform, and realizes low-cost cigarette gas maked coal with less investment.
For achieving the above object one, the present invention adopts following technical scheme: alternately utilize two to carry out forward system gas and reverse system gas with the essentially identical twin stove A stove of fixed bed intermittent gas furnace structure and B stove, in the forward gas-making process, last steam blowing enters the A stove from bottom to top, the water-gas that is produced enters the B stove with following steam blowing from top to bottom along the connection pipe, makes the tar, the organism cracking in the gasification layer of B stove that contain in the water-gas; In reverse gas-making process, last steam blowing enters the water-gas that the B stove is produced from bottom to top, enters the A stove with following steam blowing from top to bottom along the connection pipe, makes the tar, the organism cracking in the gasification layer of A stove that contain in the water-gas.
By descending gas pipe input thermal utilization equipment, oppositely the lower blowing water coal gas that is produced in the gas-making process is imported thermal utilization equipment from the A furnace bottom by descending gas pipe to the water-gas that is produced in the forward gas-making process from the B furnace bottom.
The used raw material of A stove and B stove system gas is piece bituminous coal or type bituminous coal.
For achieving the above object two, the present invention adopts following technical scheme: comprise the fixed bed intermittent gas furnace.Two and essentially identical twin stove A stove of fixed bed intermittent gas furnace structure and B stove are set, and are communicated with, and have following steam blowing pipe and smoke exhaust pipe to be communicated with the connection pipe by the top of connection pipe with A stove and B stove.Be respectively equipped with valve C and valve D on steam blowing pipe and the smoke exhaust pipe down.The A stove and and the B stove below respectively be provided with one bottom it the descending gas pipe that is communicated with, be respectively equipped with valve E and valve F on the descending gas pipe.Descending gas pipe leads to thermal utilization equipment.Tell the two-way pipeline on last steam blowing pipe, the bottom with A stove and B stove is communicated with respectively, respectively is provided with valve L and valve J on the two-way pipeline of being told.Last steam blowing pipe and following steam blowing pipe are communicated with steam manifold.With blast main that air main is communicated with on tell the two-way pipeline and be communicated with the bottom of A stove and B stove respectively, on the two-way pipeline of being told, respectively be provided with valve I, valve K.
In conjunction with described bituminous coal intermittent gasification of fixed layer method and apparatus, the technical process of its system gas divides following step.
Prefabricated type bituminous coal or piece bituminous coal are inserted A stove and B stove, and the blowing of fighting simultaneously heats up.
1, steam purge is opened valve D, and valve L and valve H import the steam from steam manifold, earlier the A stove are carried out steam purge, at this moment other valve closes.Open valve D, valve J, valve H then, import steam, the B stove is carried out steam purge, at this moment other valve closes from steam manifold.
2, blowing heats up and opens valve G, valve I, valve K and valve D simultaneously, closes other valve.Be pressed into air, simultaneously A stove and the blowing of B stove heated up from air main.
3, forward system gas is opened valve F, valve L and valve H, be pressed into steam from steam manifold, last steam blowing is through valve H, valve L, enter the A stove from bottom to top from the A furnace bottom, and open the valve C of A stove top, be pressed into steam from steam manifold, following steam blowing enters the B stove through the water-gas of valve C and the generation of A stove from top to bottom through the connection pipe, make the tar that contains in the water-gas, organism cracking in the temperature of B stove reaches 1100-1400 ℃ gasification layer, dust deposit is on drying layer, and process is to tar, water-gas after the organism cracking enters thermal utilization equipment through valve F.
4, oppositely make gas and open valve E, valve J and valve H, be pressed into steam from steam manifold, last steam blowing is through valve H, valve J, enter the B stove from bottom to top from the B furnace bottom, and open the valve C of B stove top, be pressed into steam from steam manifold, following steam blowing enters the A stove through the water-gas of valve C and the generation of B stove from top to bottom through the connection pipe, make the cracking in the temperature of A stove reaches 1100-1400 ℃ gasification layer of the tar that contains in the water-gas, organism, through the water-gas after tar, the organism cracking is entered thermal utilization equipment through valve E.
In producing the semi-water gas process, according to hydrogen nitrogen ratio, open valve P or valve N, make to add the nitrogen air and enter A stove or B stove through adding the nitrogen blast main.In forward system semi-water gas process, open valve M and valve P, valve-off N makes to add nitrogen air admission A stove.In reverse gas-making process, open valve M and valve N, valve-off P makes to add nitrogen air admission B stove.
Below each system gas circulation be according to steam purge---blowing heat up---forward system gas---oppositely make gas and carry out.
Produce in the synthetic ammonia process,, open or close valve M or valve N distribution and enter A stove and B stove according to hydrogen nitrogen ratio.
The present invention alternately utilizes two to carry out forward system gas and reverse system gas with the essentially identical A stove of fixed bed intermittent gas furnace structure and B stove, thereby the tar in the realization water-gas, organism are separated in the gasification slabbing, and making with bituminous coal is the water-gas made in the fixed bed intermittent gas furnace of raw material and can be to not causing a hidden trouble in the back operation.The equipment of implementing bituminous coal intermittent gasification of fixed layer method is to transform to form on the basis of existing fixed bed intermittent gas furnace, need only link up two fixed bed intermittent gas furnaces, adds that internally piloted valve can realize.Its investment is little, builds to production cycle short.Supply gas quality such as synthetic ammonia, nitrogenous fertilizer enterprises are higher, calorific value is bigger, lower-cost water-gas provides technical guarantee in order to produce.
Description of drawings
Fig. 1 is for implementing the equipment synoptic diagram of bituminous coal intermittent gasification of fixed layer method.
Reference numeral
1 valve C, 2 valve D, 3 valve F, 4 valve H, 5 valve J
6 valve L, 7 valve N, 8 valve M, 9 valve K, 10 valve I
13 times steam blowing pipe 14 smoke exhaust pipes of 11 valve G, 12 valve E
Steam blowing pipe 17 adds the nitrogen blast main on the 15 descending gas pipes 16
18 blast mains, 19 descending gas pipe 20A stove 21B stoves
22 pipes, 23 valve P
Embodiment
With reference to Fig. 1.A stove 20 and B stove 21 are the fixed bed intermittent gas furnace.Be communicated with in the top by connection pipe 22.Following steam blowing pipe 13 is communicated with the connection pipe by valve C1, and smoke exhaust pipe 14 is communicated with the connection pipe by valve D2.Last steam blowing pipe 16 is divided into the two-way pipeline and is communicated with the bottom of B stove, A stove by valve J5, valve L6 respectively, will go up steam blowing and enter in the body of heater through B stove, A furnace bottom center.Be communicated with between last steam blowing pipe and the steam manifold and control by valve H4.
Below A stove and B stove, respectively be provided with the descending gas pipe 19,15 that is communicated with its bottom.Be respectively equipped with valve E12, valve F3 on the descending gas pipe.Descending gas pipe is communicated with the pipeline that leads to thermal utilization equipment.
Tell the two-way pipeline on the blast main 18 and be communicated with A stove, B stove bottom respectively, on the two-way pipeline of being told, respectively be provided with valve I10, valve K9.
Add 17 fens two-way pipelines of nitrogen blast main and be communicated with, and controlled by valve M8 and valve N7 and total valve P23 respectively with A stove, B stove.
In gas-making process, alternately utilize A stove and B stove, carry out forward system gas and oppositely make gas.In the forward gas-making process, open valve L6, valve H4 and valve F3, other valve closes.Last steam blowing enters A stove 20 from bottom to top, the water-gas that is produced enters connection pipe 22, and open valve C1, make down steam blowing also enter the connection pipe, and and the water-gas that produces of A stove together enter B stove 21 from top to bottom, tar in the water-gas, organism cracking in the gasification layer of B stove, the descending gas pipe 15 of passing through under the water-gas of producing is at last gone to thermal utilization equipment by valve F3.
In reverse gas-making process, open valve J5, valve H4 and valve E12, other valve closes.Last steam blowing enters B stove 21 from bottom to top, the water-gas that is produced enters connection pipe 22, and open valve C1, make down steam blowing enter the connection pipe, and and the water-gas that produces of B stove together enter A stove 20 from top to bottom, tar in the water-gas, organism cracking in the gasification layer of A stove, the water-gas of producing is at last gone to thermal utilization equipment through descending gas pipe 19 by valve E12.
Prefabricated type bituminous coal or piece bituminous coal are inserted A stove and B stove, and the blowing of fighting simultaneously heats up.
1, steam purge is opened valve D2, and valve L6 and valve H4 import the steam from steam manifold, earlier the A stove are carried out steam purge, at this moment other valve closes.Open valve D2, valve J5, valve H4 then, import steam, the B stove is carried out steam purge, at this moment other valve closes from steam manifold.
2, blowing heats up and opens valve G11, valve I10, valve K9 and valve D2 simultaneously, closes other valve.Be pressed into air, simultaneously A stove and the blowing of B stove heated up from air main.
3, forward system gas is opened valve F3, valve 6L and valve H4, be pressed into steam from steam manifold, last steam blowing is through valve H4, valve L6, enter the A stove from bottom to top from the A furnace bottom, and open the valve C1 of A stove top, be pressed into steam from steam manifold, following steam blowing enters the B stove through the water-gas of valve C1 and the generation of A stove from top to bottom through the connection pipe, make the tar that contains in the water-gas, organism cracking in the temperature of B stove reaches 1100-1400 ℃ gasification layer, dust deposit is on drying layer, and process is to tar, water-gas after the organism cracking enters thermal utilization equipment through valve F3.
4, oppositely make gas and open valve E12, valve J5 and valve H4, be pressed into steam from steam manifold, last steam blowing is through valve H4, valve J5, enter the B stove from bottom to top from the B furnace bottom, and open the valve C1 of B stove top, be pressed into steam from steam manifold, following steam blowing enters the A stove through the water-gas of valve C1 and the generation of B stove from top to bottom through the connection pipe, make the cracking in the temperature of A stove reaches 1100-1400 ℃ gasification layer of the tar that contains in the water-gas, organism, through the water-gas after tar, the organism cracking is entered thermal utilization equipment through valve E12.
In producing the semi-water gas process, according to hydrogen nitrogen ratio, open valve P23 or valve N7, make to add the nitrogen air and enter A stove or B stove through adding the nitrogen blast main.In forward system semi-water gas process, open valve M8 and valve P23, valve-off N7 makes to add nitrogen air admission A stove.In reverse gas-making process, open valve M8 and valve N7, valve-off P23 makes to add nitrogen air admission B stove.
Below each system gas circulation be according to steam purge---blowing heat up---forward system gas---oppositely make gas and carry out.
Claims (2)
1, a kind of bituminous coal intermittent gasification of fixed layer method, it is characterized in that alternately utilizing two to carry out forward system gas and reverse system gas with the essentially identical twin stove A stove of fixed bed intermittent gas furnace structure and B stove, in the forward gas-making process, last steam blowing enters water-gas that the A stove produces from bottom to top and enters the B stove with steam blowing down from top to bottom along the connection pipe, makes the tar, the organism cracking in the gasification layer of B stove that contain in the water-gas; In reverse gas-making process, last steam blowing enters the water-gas that the B stove is produced from bottom to top, enters the A stove with following steam blowing from top to bottom along the connection pipe, makes the tar, the organism cracking in the gasification layer of A stove that contain in the water-gas.
2, a kind of described method and apparatus of claim 1 that is used for, comprise the fixed bed intermittent gas furnace, it is characterized in that: two and essentially identical twin stove A stove of fixed bed intermittent gas furnace structure (20) and B stove (21) are set, and by the top connection of connection pipe (22) with A stove and B stove, and there are following steam blowing pipe (13) and smoke exhaust pipe (14) to be communicated with, are being respectively equipped with valve C (1), valve D (2) on steam blowing pipe and the smoke exhaust pipe down with the connection pipe;
The A stove and and the B stove below respectively be provided with one bottom it the descending gas pipe (19), (15) that are communicated with, be respectively equipped with valve E (12), valve F (3) on the descending gas pipe;
Tell the two-way pipeline on last steam blowing pipe (16), the bottom with A stove and B stove is communicated with respectively, respectively is provided with valve L (6), valve J (5) on the two-way pipeline of being told;
On blast main (18), tell the two-way pipeline and be communicated with the bottom of A stove and B stove respectively, on the two-way pipeline of being told, respectively be provided with valve I (10), valve K (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410060406 CN1247748C (en) | 2004-07-06 | 2004-07-06 | Intermittent gas making method and device with bituminous coal fixing layer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410060406 CN1247748C (en) | 2004-07-06 | 2004-07-06 | Intermittent gas making method and device with bituminous coal fixing layer |
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| CN1587354A true CN1587354A (en) | 2005-03-02 |
| CN1247748C CN1247748C (en) | 2006-03-29 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101070478B (en) * | 2007-05-11 | 2010-05-19 | 南京工业大学 | Double-fixing-bed biomass reactor system of supplying heat by heat pipe |
| CN102154026A (en) * | 2011-03-07 | 2011-08-17 | 湖北双环科技股份有限公司 | Method for carrying out coal gasification regionally by fixed bed |
| CN102154025A (en) * | 2011-03-07 | 2011-08-17 | 湖北双环科技股份有限公司 | Coal gas generation method based on oxygen-enriched gasification at different regions |
| CN102277202A (en) * | 2011-07-19 | 2011-12-14 | 程培胜 | Method for preparing gas by cracking garbage and biomass at high temperature |
| CN102533336A (en) * | 2012-03-02 | 2012-07-04 | 湖北双环科技股份有限公司 | Coal gas production device with two serially-connected furnaces and technology thereof |
| CN102585905A (en) * | 2012-02-29 | 2012-07-18 | 湖北双环科技股份有限公司 | Bituminous coal fixed bed continuous gasification method |
| CN101475839B (en) * | 2009-01-08 | 2012-10-31 | 北京名都厚德科技有限公司 | Coupling fixed bed oxygen-enriched continuous gasification process |
| CN103756730A (en) * | 2014-01-22 | 2014-04-30 | 杭州全合科技有限公司 | Heat accumulating type powdered coal entrained bed gasification method |
| CN114106888A (en) * | 2021-11-22 | 2022-03-01 | 安徽晋煤中能化工股份有限公司 | Automatic optimization device for steam entering gas furnace |
-
2004
- 2004-07-06 CN CN 200410060406 patent/CN1247748C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101070478B (en) * | 2007-05-11 | 2010-05-19 | 南京工业大学 | Double-fixing-bed biomass reactor system of supplying heat by heat pipe |
| CN101475839B (en) * | 2009-01-08 | 2012-10-31 | 北京名都厚德科技有限公司 | Coupling fixed bed oxygen-enriched continuous gasification process |
| CN102154026A (en) * | 2011-03-07 | 2011-08-17 | 湖北双环科技股份有限公司 | Method for carrying out coal gasification regionally by fixed bed |
| CN102154025A (en) * | 2011-03-07 | 2011-08-17 | 湖北双环科技股份有限公司 | Coal gas generation method based on oxygen-enriched gasification at different regions |
| CN102154026B (en) * | 2011-03-07 | 2013-11-06 | 湖北双环科技股份有限公司 | Method for carrying out coal gasification regionally by fixed bed |
| CN102277202A (en) * | 2011-07-19 | 2011-12-14 | 程培胜 | Method for preparing gas by cracking garbage and biomass at high temperature |
| CN102277202B (en) * | 2011-07-19 | 2013-04-03 | 程培胜 | Method for preparing gas by cracking garbage and biomass at high temperature |
| CN102585905A (en) * | 2012-02-29 | 2012-07-18 | 湖北双环科技股份有限公司 | Bituminous coal fixed bed continuous gasification method |
| CN102585905B (en) * | 2012-02-29 | 2014-12-17 | 湖北双环科技股份有限公司 | Bituminous coal fixed bed continuous gasification method |
| CN102533336A (en) * | 2012-03-02 | 2012-07-04 | 湖北双环科技股份有限公司 | Coal gas production device with two serially-connected furnaces and technology thereof |
| CN102533336B (en) * | 2012-03-02 | 2014-12-17 | 湖北双环科技股份有限公司 | Coal gas production device with two serially-connected furnaces and technology thereof |
| CN103756730A (en) * | 2014-01-22 | 2014-04-30 | 杭州全合科技有限公司 | Heat accumulating type powdered coal entrained bed gasification method |
| CN103756730B (en) * | 2014-01-22 | 2015-02-04 | 杭州全合科技有限公司 | Heat accumulating type powdered coal entrained bed gasification method |
| CN114106888A (en) * | 2021-11-22 | 2022-03-01 | 安徽晋煤中能化工股份有限公司 | Automatic optimization device for steam entering gas furnace |
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| CN1247748C (en) | 2006-03-29 |
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