CN103450944B

CN103450944B - Multifunctional fixed bed gasification furnace gas making device and gas making process

Info

Publication number: CN103450944B
Application number: CN201310373276.XA
Authority: CN
Inventors: 顾朝晖; 王洪营; 宋仁委; 杨悦敬; 杨国洞; 徐严伟; 崔增涛; 宋肖盼
Original assignee: Henan Xinlianxin Fertilizer Co Ltd
Current assignee: Jiangxi Xinlianxin Chemical Industry Co ltd; Xinjiang Xinlianxin Energy Chemical Co ltd; Henan Xinlianxin Chemicals Group Co Ltd
Priority date: 2013-08-26
Filing date: 2013-08-26
Publication date: 2015-01-21
Anticipated expiration: 2033-08-26
Also published as: CN103450944A

Abstract

The invention belongs to the technical field of gas making of fixed bed gasification furnaces, and specifically relates to a multifunctional fixed bed gasification furnace gas making device and a gas making process. The multifunctional fixed bed gasification furnace gas making device comprises a gasification furnace the top of which is provided with a coal inlet and slag holes which are respectively arranged on the two sides of the bottom of the gasification furnace, wherein an oxygen pipeline is connected with the inlet of a buffer tank through a first program control valve, the outlet of the buffer tank is sequentially connected with a third program control valve, a fourteenth program control valve and the bottom of the gasification furnace through a pipeline; a first tee joint is arranged on the pipeline arranged between the fourteenth program control valve and the bottom of the gasification furnace, a third end of the first tee joint is sequentially communicated with an eighth program control valve and a twelfth program control valve through the pipeline, and the twelfth program control valve is communicated with a gas cabinet. The multifunctional fixed bed gasification furnace gas making device and the gas making process provided by the invention have the advantages that the raw material coal adaptability is widened, the consumption of raw material coal is reduced, a resource is saved, the gas yield of a single furnace is improved, the cost is reduced, the multifunctional fixed bed gasification furnace gas making device is free from the influence of a space division gas making fault, the operation is simple and convenient, the multifunctional fixed bed gasification furnace gas making device is stable and safe, and the enterprise competitive power is improved.

Description

The multiplex gasifier system device of air of fixed bed and gas-made technology

Technical field

The invention belongs to fixed-bed gasification furnace gas producing technology field, be specifically related to the multiplex gasifier system device of air of a kind of fixed bed and gas-made technology.

Background technology

Current fixed-bed intermittent formula vapourizing furnace is the mainstream technology of nitrogen fertilizer production enterprise of China, it is the intermittent type gasifying process of vaporized chemical that this vapourizing furnace generally adopts at present with air, this gasifying process needs to produce a certain amount of blowing air emptying or burning being blown into air event, seriously constrain the gas forming amount of fixed bed producer, too increase the consumption of feed coal simultaneously.Although employing oxygen enrichment continuously gas processed can solve the problem preferably, but making oxygen by air separation plant failure is stopped, rear oxygen enrichment gas just cannot normally work, simultaneously because cost factor causes enterprise mutually to switch through being everlasting between moulded coal and various types of anthracite block coal on raw material.Fertilizer enterprises mutually can switch for one between the various modes such as existing fixed bed air-making gas and oxygen enrichment gas, more and more stronger for the multi-mode gas making device needs mating various Coal rank and still can normally produce under sky grades plant failure maintenance situation.

Summary of the invention

The object of the invention is to overcome defect of the prior art and provide one can adapt to various raw material coal and operation operating mode, normal air intermittent gas preparation pattern, oxygen enrichment intermittent gas preparation pattern are provided, oxygen enrichment is down blowing gas pattern four kinds gas pattern processed on gas pattern processed and oxygen enrichment continuously, and the multiplex gasifier system device of air of fixed bed that can mutually switch between different gas pattern processed and gas-made technology.

The object of the present invention is achieved like this: comprise the vapourizing furnace that top is provided with coal inlet, the both sides of the bottom of vapourizing furnace are respectively equipped with slag notch, oxygen channel is connected with the import of surge tank by the first program-controlled valve, the outlet of surge tank by pipeline successively with the 3rd program-controlled valve, 14 program-controlled valve is connected with the bottom of vapourizing furnace, pipeline between 14 program-controlled valve and the bottom of vapourizing furnace is provided with the first threeway, 3rd end of the first threeway is connected with the 12 program-controlled valve with the 8th program-controlled valve successively by pipeline, 12 program-controlled valve is connected with gas holder, air line is connected with the import of surge tank by the second program-controlled valve, steam pipeline is successively by the 4th program-controlled valve, 13 program-controlled valve is connected with the inlet mouth on vapourizing furnace top with the 7th program-controlled valve, pipeline between described 4th program-controlled valve and the 13 program-controlled valve is provided with the second threeway, 3rd end of the second threeway is connected with the 5th program-controlled valve by pipeline, 5th program-controlled valve is connected with the import of surge tank, pipeline between described 13 program-controlled valve and the 7th program-controlled valve is provided with the 3rd threeway, 3rd end of the 3rd threeway is connected by the 3rd end of the 6th program-controlled valve with the 7th threeway be arranged between the 3rd program-controlled valve and the 14 program-controlled valve on pipeline, the air outlet on vapourizing furnace top is connected with the 11 program-controlled valve with the 9th program-controlled valve successively by pipeline, 11 program-controlled valve is connected by the 3rd end of pipeline with the 6th threeway on the pipeline be arranged between the 8th program-controlled valve and the 12 program-controlled valve, pipeline between described 9th program-controlled valve and the 11 program-controlled valve is provided with the 4th threeway, 3rd end of the 4th threeway is connected with blowing air post burning processing device with the tenth program-controlled valve successively by pipeline, described first program-controlled valve, second program-controlled valve, 3rd program-controlled valve, 4th program-controlled valve, 5th program-controlled valve, 6th program-controlled valve, 7th program-controlled valve, 8th program-controlled valve, 9th program-controlled valve, tenth program-controlled valve, 11 program-controlled valve, 12 program-controlled valve, 13 program-controlled valve is connected with DCS microcomputer control system respectively with the 14 program-controlled valve, described DCS microcomputer control system respectively with normal air intermittent gas preparation mode button, oxygen enrichment intermittent gas preparation mode button, oxygen enrichment continuously gas mode button processed is connected with down blowing gas mode button on oxygen enrichment.

Pipeline between described first program-controlled valve and the import of surge tank is provided with oxygen flow meter, pipeline between described second program-controlled valve and the import of surge tank is provided with air flowmeter, pipeline between described 4th program-controlled valve and the second threeway is provided with steam-flow meter, described surge tank is provided with gas ingredients detector: described oxygen flow meter, air flowmeter, and steam-flow meter is connected with DCS microcomputer control system respectively with gas component detector.

Be provided with the 5th threeway between 3rd end of described 4th threeway and the tenth program-controlled valve, the 3rd end of the 5th threeway is connected with air by emptying program-controlled valve, and described DCS microcomputer control system is connected with emptying program-controlled valve.

A gas-made technology for the multiplex vapourizing furnace of fixed bed, comprises normal air intermittent gas preparation pattern, oxygen enrichment intermittent gas preparation pattern, and oxygen enrichment is down blowing gas pattern on gas pattern processed and oxygen enrichment continuously;

One, when needs carry out normal air intermittent gas preparation pattern, press normal air intermittent gas preparation mode button, by DCS microcomputer control system, program-controlled valve is controlled, start general batch air-making gas pattern, normal air intermittent gas preparation pattern comprises secondary blowing up stage, the stage of blowing off, blowing stage, blowing up stage and blowing down stage;

A, the secondary blowing up stage: by DCS microcomputer control system by the 4th program-controlled valve, 13 program-controlled valve, 6th program-controlled valve, 14 program-controlled valve, 9th program-controlled valve, 11 program-controlled valve and the 12 program-controlled valve are opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve, 13 program-controlled valve, 6th program-controlled valve and the 14 program-controlled valve enter the bottom of vapourizing furnace, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace top, successively through the 9th program-controlled valve, coal gas is delivered in gas holder by the 11 program-controlled valve and the 12 program-controlled valve, all the other program-controlled valves do not related to all are in closing condition, and the time in described secondary blowing up stage is 8s altogether, this stage take steam as vaporized chemical,

B, blow off the stage: after completing the secondary blowing up stage in above-mentioned steps a, by DCS microcomputer control system by the second program-controlled valve, 3rd program-controlled valve, 14 program-controlled valve, 9th program-controlled valve, 11 program-controlled valve and the 12 program-controlled valve are opened, pressure is that the air of 45KPa is by the second program-controlled valve, surge tank, 3rd program-controlled valve and the 14 program-controlled valve enter the bottom of vapourizing furnace, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace top, successively through the 9th program-controlled valve, coal gas is delivered in gas holder by the 11 program-controlled valve and the 12 program-controlled valve, all the other program-controlled valves do not related to all are in closing condition, described in blow off the time in stage be 8s, this stage take air as vaporized chemical,

C, the blowing stage: complete in above-mentioned steps b blow off the stage after, DCS microcomputer control system controls the second program-controlled valve, 3rd program-controlled valve, 14 program-controlled valve, 9th program-controlled valve and the tenth program-controlled valve are opened, pressure is that the air of 45KPa is by the second program-controlled valve, surge tank, 3rd program-controlled valve and the 14 program-controlled valve enter the bottom of vapourizing furnace, by blowing air obtained behind vapourizing furnace combustion coal seam, blowing air is discharged by the air outlet on vapourizing furnace top, through the 9th program-controlled valve and the tenth program-controlled valve, blowing air is delivered in the burning processing device of blowing air post successively, in above-mentioned state, all the other program-controlled valves do not related to all are in closing condition, and the time in blowing stage is 21s altogether, in the time of 7s last in described 21s, close the tenth program-controlled valve, open the 11 program-controlled valve and the 12 program-controlled valve simultaneously, produced blowing air is delivered in gas holder, this stage take air as vaporized chemical,

D, the blowing up stage: after completing the blowing stage in above-mentioned steps c, by DCS microcomputer control system by the 4th program-controlled valve, 13 program-controlled valve, 6th program-controlled valve, 14 program-controlled valve, 9th program-controlled valve, 11 program-controlled valve and the 12 program-controlled valve are opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve, 13 program-controlled valve, 6th program-controlled valve and the 14 program-controlled valve enter the bottom of vapourizing furnace, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace top, successively through the 9th program-controlled valve, coal gas is delivered in gas holder by the 11 program-controlled valve and the 12 program-controlled valve, all the other program-controlled valves do not related to all are in closing condition, and the time in described blowing up stage is 29s altogether, this stage take steam as vaporized chemical,

E, blowing down stage: after completing the blowing up stage in above-mentioned steps d, by DCS microcomputer control system by the 4th program-controlled valve, the 13 program-controlled valve, the 7th program-controlled valve, 8th program-controlled valve and the 12 program-controlled valve are opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve, 13 program-controlled valve and the 7th program-controlled valve enter the top of vapourizing furnace, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the bottom of vapourizing furnace, delivers in gas holder successively through the 8th program-controlled valve and the 12 program-controlled valve by coal gas; All the other program-controlled valves do not related to all are in closing condition, and the time in described blowing down stage is 54s altogether; This stage take steam as vaporized chemical; After completing the above-mentioned blowing down stage, can the secondary blowing up stage be carried out, so circulate;

Two, when needs carry out oxygen enrichment intermittent gas preparation pattern, press oxygen enrichment intermittent gas preparation mode button, by DCS microcomputer control system, program-controlled valve is controlled, startup oxygen enrichment intermittent gas preparation pattern, oxygen enrichment intermittent gas preparation pattern comprises the oxygen enrichment secondary blowing up stage, oxygen enrichment blows off the stage, oxygen enrichment is dried stage, oxygen enrichment blowing up stage and oxygen enrichment blowing down stage;

A, the oxygen enrichment secondary blowing up stage: by DCS microcomputer control system by the 4th program-controlled valve, 13 program-controlled valve, 6th program-controlled valve, 14 program-controlled valve, 9th program-controlled valve, 11 program-controlled valve and the 12 program-controlled valve are opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve, 13 program-controlled valve, 6th program-controlled valve and the 14 program-controlled valve enter the bottom of vapourizing furnace, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace top, successively through the 9th program-controlled valve, coal gas is delivered in gas holder by the 11 program-controlled valve and the 12 program-controlled valve, all the other program-controlled valves do not related to all are in closing condition, and the time in described oxygen enrichment secondary blowing up stage is 12s altogether, this stage take steam as vaporized chemical,

B, oxygen enrichment blows off the stage: after completing the oxygen enrichment secondary blowing up stage in above-mentioned steps a, by DCS microcomputer control system by the first program-controlled valve, second program-controlled valve, 3rd program-controlled valve, 14 program-controlled valve, 9th program-controlled valve, 11 program-controlled valve and the 12 program-controlled valve are opened, pressure is that the air of 45KPa enters surge tank by the second program-controlled valve, pressure is that the oxygen of 48KPa enters in surge tank by the first program-controlled valve, DCS microcomputer control system controls the opening degree of the first program-controlled valve and the second program-controlled valve according to the data of oxygen flow meter and air flowmeter, and the gaseous constituent content detected by gas ingredients detector in surge tank, the oxygen-rich air pressure in surge tank is made to be: 42KPa, in surge tank, the oxygen level of vaporized chemical is 32% ~ 35%, the outlet of surge tank enters the bottom of vapourizing furnace by the 3rd program-controlled valve and the 14 program-controlled valve, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace top, successively through the 9th program-controlled valve, coal gas is delivered in gas holder by the 11 program-controlled valve and the 12 program-controlled valve, all the other program-controlled valves do not related to all are in closing condition, and the time that described oxygen enrichment blows off the stage is 7s, this stage take oxygen-rich air as vaporized chemical,

C, the oxygen enrichment blowing stage: after the oxygen enrichment completed in above-mentioned steps b blows off the stage, DCS microcomputer control system controls the first program-controlled valve, second program-controlled valve, 3rd program-controlled valve, 14 program-controlled valve, 9th program-controlled valve and the tenth program-controlled valve are opened, pressure is that the air of 45KPa enters in surge tank by the second program-controlled valve, pressure is that the oxygen of 48KPa enters in surge tank by the first program-controlled valve, DCS microcomputer control system controls the opening degree of the first program-controlled valve and the second program-controlled valve according to the data of oxygen flow meter and air flowmeter, and the gaseous constituent content detected by gas ingredients detector in surge tank, the oxygen-rich air pressure in surge tank is made to be 42KPa, in surge tank, the oxygen level of vaporized chemical is 32% ~ 35%, the outlet of surge tank enters the bottom of vapourizing furnace by the 3rd program-controlled valve and the 14 program-controlled valve, by blowing air obtained behind vapourizing furnace combustion coal seam, blowing air is discharged by the air outlet on vapourizing furnace top, delivers in the burning processing device of blowing air post successively through the 9th program-controlled valve and the tenth program-controlled valve by blowing air, in above-mentioned state, all the other program-controlled valves do not related to all are in closing condition, the time in oxygen enrichment blowing stage is 13s altogether, in the time of 8s last in described 13s, close the tenth program-controlled valve, open the 11 program-controlled valve and the 12 program-controlled valve simultaneously, produced blowing air is delivered in gas holder, this stage take oxygen-rich air as vaporized chemical,

D, the oxygen enrichment blowing up stage: after completing the oxygen enrichment blowing stage in above-mentioned steps c, by DCS microcomputer control system by the 4th program-controlled valve, 13 program-controlled valve, 6th program-controlled valve, 14 program-controlled valve, 9th program-controlled valve, 11 program-controlled valve and the 12 program-controlled valve are opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve, 13 program-controlled valve, 6th program-controlled valve and the 14 program-controlled valve enter the bottom of vapourizing furnace, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace top, successively through the 9th program-controlled valve, coal gas is delivered in gas holder by the 11 program-controlled valve and the 12 program-controlled valve, all the other program-controlled valves do not related to all are in closing condition, and the time in described oxygen enrichment blowing up stage is 34s altogether, this stage take steam as vaporized chemical,

E, oxygen enrichment blowing down stage: after completing the oxygen enrichment blowing up stage in above-mentioned steps d, by DCS microcomputer control system by the 4th program-controlled valve, the 13 program-controlled valve, the 7th program-controlled valve, 8th program-controlled valve and the 12 program-controlled valve are opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve, 13 program-controlled valve and the 7th program-controlled valve enter the top of vapourizing furnace, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the bottom of vapourizing furnace, delivers in gas holder successively through the 8th program-controlled valve and the 12 program-controlled valve by coal gas; All the other program-controlled valves do not related to all are in closing condition, and the time in described oxygen enrichment blowing down stage is 59s altogether; This stage take steam as vaporized chemical; After completing the above-mentioned oxygen enrichment blowing down stage, the oxygen enrichment secondary blowing up stage can be carried out, so circulate;

Three, when needs carry out oxygen enrichment continuously gas pattern processed time, press oxygen enrichment gas mode button processed continuously, controlled by DCS microcomputer control system to program-controlled valve, start oxygen enrichment gas pattern processed continuously, oxygen enrichment continuously gas pattern processed comprises the oxygen enrichment continuous blowing up stage;

A, the oxygen enrichment continuous blowing up stage: DCS microcomputer control system controls the first program-controlled valve, second program-controlled valve, 3rd program-controlled valve, 4th program-controlled valve, 5th program-controlled valve, 14 program-controlled valve, 9th program-controlled valve, 11 program-controlled valve and the 12 program-controlled valve are opened, pressure is that the air of 45KPa enters in surge tank by the second program-controlled valve, pressure is that the oxygen of 48KPa enters in surge tank by the first program-controlled valve, pressure is that the steam of 54KPa enters in surge tank by the 4th program-controlled valve and the 5th program-controlled valve, DCS microcomputer control system is according to oxygen flow meter, the data of air flowmeter and steam-flow meter control the first program-controlled valve, the opening degree of the second program-controlled valve and the 4th program-controlled valve, and the gaseous constituent content detected by gas ingredients detector in surge tank, the gasifying agent pressure in surge tank is made to be 44KPa, in surge tank, the oxygen level of vaporized chemical is 27% ~ 29%, the water vapour content of vaporized chemical is 45% ~ 47%, a nitrogen content of vaporized chemical is 25% ~ 27%, the outlet of surge tank enters the bottom of vapourizing furnace by the 3rd program-controlled valve and the 14 program-controlled valve, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace top, successively through the 9th program-controlled valve, coal gas is delivered in gas holder by the 11 program-controlled valve and the 12 program-controlled valve, all the other program-controlled valves do not related to all are in closing condition, this stage take oxygen-rich steam as vaporized chemical,

Four, when needs carry out down blowing gas pattern on oxygen enrichment, press down blowing gas mode button on oxygen enrichment, by DCS microcomputer control system, program-controlled valve is controlled, start down blowing gas pattern on oxygen enrichment: on oxygen enrichment, down blowing gas pattern comprises oxygen-rich steam blowing up stage and oxygen-rich steam blowing down stage;

A, the oxygen-rich steam blowing up stage: DCS microcomputer control system controls the first program-controlled valve, second program-controlled valve, 3rd program-controlled valve, 4th program-controlled valve, 5th program-controlled valve, 14 program-controlled valve, 9th program-controlled valve, 11 program-controlled valve and the 12 program-controlled valve are opened, pressure is that the air of 45KPa enters in surge tank by the second program-controlled valve, pressure is that the oxygen of 48KPa enters in surge tank by the first program-controlled valve, pressure is that the steam of 54KPa enters in surge tank by the 4th program-controlled valve and the 5th program-controlled valve, DCS microcomputer control system is according to oxygen flow meter, the data of air flowmeter and steam-flow meter control the first program-controlled valve, the opening degree of the second program-controlled valve and the 4th program-controlled valve, and the gaseous constituent content detected by gas ingredients detector in surge tank, the gasifying agent pressure in surge tank is made to be 44KPa, in surge tank, the oxygen level of vaporized chemical is 27% ~ 29%, the water vapour content of vaporized chemical is 45% ~ 47%, a nitrogen content of vaporized chemical is 25% ~ 27%, the outlet of surge tank enters the bottom of vapourizing furnace by the 3rd program-controlled valve and the 14 program-controlled valve, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace top, successively through the 9th program-controlled valve, coal gas is delivered in gas holder by the 11 program-controlled valve and the 12 program-controlled valve, all the other program-controlled valves do not related to all are in closing condition, the described oxygen-rich steam blowing up stage is 90s, this stage take oxygen-rich steam as vaporized chemical,

B, the oxygen-rich steam blowing down stage: after the oxygen-rich steam blowing up stage in completing steps a, DCS microcomputer control system controls the first program-controlled valve, second program-controlled valve, 3rd program-controlled valve, 4th program-controlled valve, 5th program-controlled valve, 6th program-controlled valve, 7th program-controlled valve, 8th program-controlled valve and the 12 program-controlled valve are opened, pressure is that the air of 45KPa enters in surge tank by the second program-controlled valve, pressure is that the oxygen of 48KPa enters in surge tank by the first program-controlled valve, pressure is that the steam of 54KPa enters in surge tank by the 4th program-controlled valve and the 5th program-controlled valve, DCS microcomputer control system is according to oxygen flow meter, the data of air flowmeter and steam-flow meter control the first program-controlled valve, the opening degree of the second program-controlled valve and the 4th program-controlled valve, and the gaseous constituent content detected by gas ingredients detector in surge tank, the gasifying agent pressure in surge tank is made to be 44KPa, in surge tank, the oxygen level of vaporized chemical is 27% ~ 29%, the water vapour content of vaporized chemical is 45% ~ 47%, a nitrogen content of vaporized chemical is 25% ~ 27%, the outlet of surge tank is by the 3rd program-controlled valve, 6th program-controlled valve and the 7th program-controlled valve enter the top of vapourizing furnace, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the bottom of vapourizing furnace, delivers in gas holder successively through the 8th program-controlled valve and the 12 program-controlled valve by coal gas, all the other program-controlled valves do not related to all are in closing condition, and the time in described oxygen-rich steam blowing down stage is 30s altogether, this stage is vaporized chemical with oxygen-rich steam, after completing the above-mentioned oxygen-rich steam blowing down stage, can carry out the oxygen-rich steam blowing up stage, so circulate.

The oxygen enrichment continuous blowing up stage of described oxygen enrichment continuously in gas pattern processed; On oxygen enrichment, down blowing gas pattern comprises oxygen-rich steam blowing up stage and oxygen-rich steam blowing down stage; Above-mentioned three phases starts front first program-controlled valve and the second program-controlled valve time delay 2s opens.

When described four kinds of gas patterns processed switch, in accordance with the following steps: step one: blowing out is carried out to vapourizing furnace; Second step: after completing steps one, DCS microcomputer control system controls the 9th program-controlled valve and emptying program-controlled valve is opened, and all the other program-controlled valves do not related to all are in closing condition, carry out safety vent process, and the time of safety vent process is 10s; Step 3: in completing steps two after safety vent process, DCS microcomputer control system closes the 9th program-controlled valve and emptying program-controlled valve, step 4: after completing steps three, blow-on is carried out to vapourizing furnace, step 5: after the vapourizing furnace blow-on of completing steps four, DCS microcomputer control system enters corresponding gas pattern processed automatically.

The multiplex gasifier system device of air of the fixed bed made according to such scheme, various raw material coal and operation operating mode can be adapted to, normal air intermittent gas preparation pattern, oxygen enrichment intermittent gas preparation pattern are provided, oxygen enrichment is down blowing gas pattern four kinds gas pattern processed on gas pattern processed and oxygen enrichment continuously, and have the advantages that can mutually switch between different gas pattern processed, above-mentioned four kinds of gas patterns processed are suitable for coal, raw material consumption situation, and gas forming amount and advantage see the following form:

The shortcoming that fixed-bed gasification furnace raw material coal is single and pattern is single can be solved by the present invention, enterprise is made to utilize low-cost local coal and coal inferior as raw material, have widen raw material coal adaptability, reduce feed coal consumption, economize on resources, improve single stove gas forming amount, reduce costs, by empty point gas fault effects processed, easy and simple to handle, the advantage of stability and safety and raising enterprise competitiveness.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is control planning schematic diagram of the present invention.

Embodiment

As depicted in figs. 1 and 2, the present invention includes the vapourizing furnace 20 that top is provided with coal inlet, the both sides of the bottom of vapourizing furnace 20 are respectively equipped with slag notch, oxygen channel is connected with the import of surge tank 21 by the first program-controlled valve 1, the outlet of surge tank 21 by pipeline successively with the 3rd program-controlled valve 3, 14 program-controlled valve 14 is connected with the bottom of vapourizing furnace 20, pipeline between 14 program-controlled valve 14 and the bottom of vapourizing furnace 20 is provided with the first threeway 26, 3rd end of the first threeway 26 is connected with the 12 program-controlled valve 12 with the 8th program-controlled valve 8 successively by pipeline, 12 program-controlled valve 12 is connected with gas holder, air line is connected with the import of surge tank 21 by the second program-controlled valve 2, steam pipeline is successively by the 4th program-controlled valve 4, 13 program-controlled valve 13 is connected with the inlet mouth of the 7th program-controlled valve 7 with vapourizing furnace 20 top, pipeline between described 4th program-controlled valve the 4 and the 13 program-controlled valve 13 is provided with the second threeway 27, 3rd end of the second threeway 27 is connected with the 5th program-controlled valve 5 by pipeline, 5th program-controlled valve 5 is connected with the import of surge tank 21, pipeline between described 13 program-controlled valve 13 and the 7th program-controlled valve 7 is provided with the 3rd threeway 28, 3rd end of the 3rd threeway 28 is connected by the 3rd end of the 6th program-controlled valve 6 with the 7th threeway 32 be arranged between the 3rd program-controlled valve the 3 and the 14 program-controlled valve 14 on pipeline, the air outlet on vapourizing furnace 20 top is connected with the 11 program-controlled valve 11 with the 9th program-controlled valve 9 successively by pipeline, 11 program-controlled valve 11 is connected by the 3rd end of pipeline with the 6th threeway 31 on the pipeline be arranged between the 8th program-controlled valve the 8 and the 12 program-controlled valve 12, pipeline between described 9th program-controlled valve the 9 and the 11 program-controlled valve 11 is provided with the 4th threeway 29, 3rd end of the 4th threeway 29 is connected with blowing air post burning processing device with the tenth program-controlled valve 10 successively by pipeline, described first program-controlled valve 1, second program-controlled valve 2, 3rd program-controlled valve 3, 4th program-controlled valve 4, 5th program-controlled valve 5, 6th program-controlled valve 6, 7th program-controlled valve 7, 8th program-controlled valve 8, 9th program-controlled valve 9, tenth program-controlled valve 10, 11 program-controlled valve 11, 12 program-controlled valve 12, 13 program-controlled valve 13 is connected with DCS microcomputer control system 19 respectively with the 14 program-controlled valve 14, described DCS microcomputer control system 19 respectively with normal air intermittent gas preparation mode button 15, oxygen enrichment intermittent gas preparation mode button 16, oxygen enrichment continuously gas mode button 17 processed is connected with down blowing gas mode button 18 on oxygen enrichment.Pipeline between described first program-controlled valve 1 and the import of surge tank 21 is provided with oxygen flow meter 22, pipeline between described second program-controlled valve 2 and the import of surge tank 21 is provided with air flowmeter 23, pipeline between described 4th program-controlled valve 4 and the second threeway 27 is provided with steam-flow meter 24, and described surge tank 21 is provided with gas ingredients detector 25; Described oxygen flow meter 22, air flowmeter 23, steam-flow meter 24 is connected with DCS microcomputer control system 19 respectively with gas component detector 25.The 3rd end being provided with the 5th threeway the 30, five threeway 30 between 3rd end of described 4th threeway 29 and the tenth program-controlled valve 10 is connected with air by emptying program-controlled valve 33, and described DCS microcomputer control system 19 is connected with emptying program-controlled valve 33.The first end of the first threeway 26 of the present invention is connected with the 14 program-controlled valve 14, second end is connected with the bottom of vapourizing furnace 20, 3rd end is connected with the 8th program-controlled valve 8, the first end of described second threeway 27 is connected with steam-flow meter 24, second end is connected with 13 program-controlled valves 13, 3rd end is connected with the 5th program-controlled valve 5, the first end of described 3rd threeway 28 is connected with the 13 program-controlled valve 13, second end is connected with the 7th program-controlled valve 7, 3rd end is connected with one end of the 6th program-controlled valve 6, the first end of described 4th threeway 29 is connected with the 9th program-controlled valve 9, second end is connected with the 11 program-controlled valve 11, 3rd end is connected with the first end of the 5th threeway 30, second end of the 5th threeway 30 is connected with blowing air post burning processing device, 3rd end of the 5th threeway 30 is connected with emptying program-controlled valve 33, the first end of described 6th threeway 31 is connected with the 8th program-controlled valve 8, second end is connected with the 12 program-controlled valve 12, 3rd end is connected with the 11 program-controlled valve 11, the first end of described 7th threeway 32 is connected with the 3rd program-controlled valve 3, second end is connected with the 14 program-controlled valve 14, 3rd end is connected with the other end of the 6th program-controlled valve 6.

One, when needs carry out normal air intermittent gas preparation pattern, press normal air intermittent gas preparation mode button 15, controlled by DCS microcomputer control system 19 pairs of program-controlled valves, start general batch air-making gas pattern, normal air intermittent gas preparation pattern comprises secondary blowing up stage, the stage of blowing off, blowing stage, blowing up stage and blowing down stage;

A, the secondary blowing up stage: by DCS microcomputer control system 19 by the 4th program-controlled valve 4, 13 program-controlled valve 13, 6th program-controlled valve 6, 14 program-controlled valve 14, 9th program-controlled valve 9, 11 program-controlled valve the 11 and the 12 program-controlled valve 12 is opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve 4, 13 program-controlled valve 13, 6th program-controlled valve the 6 and the 14 program-controlled valve 14 enters the bottom of vapourizing furnace 20, by coal gas obtained behind vapourizing furnace 20 combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace 20 top, successively through the 9th program-controlled valve 9, coal gas is delivered in gas holder by the 11 program-controlled valve the 11 and the 12 program-controlled valve 12, all the other program-controlled valves do not related to all are in closing condition, and the time in described secondary blowing up stage is 8s altogether, this stage take steam as vaporized chemical,

B, blow off the stage: after completing the secondary blowing up stage in above-mentioned steps a, by DCS microcomputer control system 19 by the second program-controlled valve 2, 3rd program-controlled valve 3, 14 program-controlled valve 14, 9th program-controlled valve 9, 11 program-controlled valve the 11 and the 12 program-controlled valve 12 is opened, pressure is that the air of 45KPa is by the second program-controlled valve 2, surge tank 21, 3rd program-controlled valve the 3 and the 14 program-controlled valve 14 enters the bottom of vapourizing furnace 20, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace 20 top, successively through the 9th program-controlled valve 9, coal gas is delivered in gas holder by the 11 program-controlled valve the 11 and the 12 program-controlled valve 12, all the other program-controlled valves do not related to all are in closing condition, described in blow off the time in stage be 8s, this stage take air as vaporized chemical,

C, the blowing stage: complete in above-mentioned steps b blow off the stage after, DCS microcomputer control system 19 controls the second program-controlled valve 2, 3rd program-controlled valve 3, 14 program-controlled valve 14, 9th program-controlled valve 9 and the tenth program-controlled valve 10 are opened, pressure is that the air of 45KPa is by the second program-controlled valve 2, surge tank 21, 3rd program-controlled valve the 3 and the 14 program-controlled valve 14 enters the bottom of vapourizing furnace 20, by blowing air obtained behind vapourizing furnace combustion coal seam, blowing air is discharged by the air outlet on vapourizing furnace 20 top, through the 9th program-controlled valve 9 and the tenth program-controlled valve 10, blowing air is delivered in the burning processing device of blowing air post successively, in above-mentioned state, all the other program-controlled valves do not related to all are in closing condition, the time in blowing stage is 21s altogether, in the time of 7s last in described 21s, close the tenth program-controlled valve 10, open the 11 program-controlled valve the 11 and the 12 program-controlled valve 12 simultaneously, produced blowing air is delivered in gas holder, this stage take air as vaporized chemical,

D, the blowing up stage: after completing the blowing stage in above-mentioned steps c, by DCS microcomputer control system 19 by the 4th program-controlled valve 4, 13 program-controlled valve 13, 6th program-controlled valve 6, 14 program-controlled valve 14, 9th program-controlled valve 9, 11 program-controlled valve the 11 and the 12 program-controlled valve 12 is opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve 4, 13 program-controlled valve 13, 6th program-controlled valve the 6 and the 14 program-controlled valve 14 enters the bottom of vapourizing furnace 20, by coal gas obtained behind vapourizing furnace 20 combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace 20 top, successively through the 9th program-controlled valve 9, coal gas is delivered in gas holder by the 11 program-controlled valve the 11 and the 12 program-controlled valve 12, all the other program-controlled valves do not related to all are in closing condition, and the time in described blowing up stage is 29s altogether, this stage take steam as vaporized chemical,

E, the blowing down stage: after completing the blowing up stage in above-mentioned steps d, by DCS microcomputer control system 19 by the 4th program-controlled valve 4, 13 program-controlled valve 13, 7th program-controlled valve 7, 8th program-controlled valve the 8 and the 12 program-controlled valve 12 is opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve 4, 13 program-controlled valve 13 and the 7th program-controlled valve 7 enter the top of vapourizing furnace 20, by coal gas obtained behind vapourizing furnace 20 combustion coal seam, coal gas is discharged by the bottom of vapourizing furnace 20, through the 8th program-controlled valve the 8 and the 12 program-controlled valve 12, coal gas is delivered in gas holder successively, all the other program-controlled valves do not related to all are in closing condition, and the time in described blowing down stage is 54s altogether, this stage take steam as vaporized chemical, after completing the above-mentioned blowing down stage, can the secondary blowing up stage be carried out, so circulate,

Two, when needs carry out oxygen enrichment intermittent gas preparation pattern, press oxygen enrichment intermittent gas preparation mode button 16, controlled by DCS microcomputer control system 19 pairs of program-controlled valves, startup oxygen enrichment intermittent gas preparation pattern, oxygen enrichment intermittent gas preparation pattern comprises the oxygen enrichment secondary blowing up stage, oxygen enrichment blows off the stage, oxygen enrichment is dried stage, oxygen enrichment blowing up stage and oxygen enrichment blowing down stage;

A, the oxygen enrichment secondary blowing up stage: by DCS microcomputer control system 19 by the 4th program-controlled valve 4, 13 program-controlled valve 13, 6th program-controlled valve 6, 14 program-controlled valve 14, 9th program-controlled valve 9, 11 program-controlled valve the 11 and the 12 program-controlled valve 12 is opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve 4, 13 program-controlled valve 13, 6th program-controlled valve the 6 and the 14 program-controlled valve 14 enters the bottom of vapourizing furnace 20, by coal gas obtained behind vapourizing furnace 20 combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace 20 top, successively through the 9th program-controlled valve 9, coal gas is delivered in gas holder by the 11 program-controlled valve the 11 and the 12 program-controlled valve 12, all the other program-controlled valves do not related to all are in closing condition, and the time in described oxygen enrichment secondary blowing up stage is 12s altogether, this stage take steam as vaporized chemical,

B, oxygen enrichment blows off the stage: after completing the oxygen enrichment secondary blowing up stage in above-mentioned steps a, by DCS microcomputer control system 19 by the first program-controlled valve 1, second program-controlled valve 2, 3rd program-controlled valve 3, 14 program-controlled valve 14, 9th program-controlled valve 9, 11 program-controlled valve the 11 and the 12 program-controlled valve 12 is opened, pressure is that the air of 45KPa enters surge tank 21 by the second program-controlled valve 2, pressure is that the oxygen of 48KPa enters in surge tank 21 by the first program-controlled valve 1, DCS microcomputer control system 19 controls the opening degree of the first program-controlled valve 1 and the second program-controlled valve 2 according to the data of oxygen flow meter 22 and air flowmeter 23, and the gaseous constituent content detected by gas ingredients detector 25 in surge tank 21, the oxygen-rich air pressure in surge tank 21 is made to be 42KPa, in surge tank 21, the oxygen level of vaporized chemical is 32% ~ 35%, the outlet of surge tank 21 enters the bottom of vapourizing furnace 20 by the 3rd program-controlled valve the 3 and the 14 program-controlled valve 14, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace 20 top, through the 9th program-controlled valve the 9, the 11 program-controlled valve the 11 and the 12 program-controlled valve 12, coal gas is delivered in gas holder successively, all the other program-controlled valves do not related to all are in closing condition, and the time that described oxygen enrichment blows off the stage is 7s, this stage take oxygen-rich air as vaporized chemical,

C, the oxygen enrichment blowing stage: after the oxygen enrichment completed in above-mentioned steps b blows off the stage, DCS microcomputer control system 19 controls the first program-controlled valve 1, second program-controlled valve 2, 3rd program-controlled valve 3, 14 program-controlled valve 14, 9th program-controlled valve 9 and the tenth program-controlled valve 10 are opened, pressure is that the air of 45KPa enters in surge tank 21 by the second program-controlled valve 2, pressure is that the oxygen of 48KPa enters in surge tank 21 by the first program-controlled valve 1, DCS microcomputer control system 19 controls the opening degree of the first program-controlled valve 1 and the second program-controlled valve 2 according to the data of oxygen flow meter 22 and air flowmeter 23, and the gaseous constituent content detected by gas ingredients detector 25 in surge tank 21, the oxygen-rich air pressure in surge tank 21 is made to be 42KPa, in surge tank 21, the oxygen level of vaporized chemical is 32% ~ 35%, the outlet of surge tank 21 enters the bottom of vapourizing furnace 20 by the 3rd program-controlled valve the 3 and the 14 program-controlled valve 14, by blowing air obtained behind vapourizing furnace combustion coal seam, blowing air is discharged by the air outlet on vapourizing furnace 20 top, delivers in the burning processing device of blowing air post successively through the 9th program-controlled valve 9 and the tenth program-controlled valve 10 by blowing air, in above-mentioned state, all the other program-controlled valves do not related to all are in closing condition, the time in oxygen enrichment blowing stage is 13s altogether, in the time of 8s last in described 13s, close the tenth program-controlled valve 10, open the 11 program-controlled valve the 11 and the 12 program-controlled valve 12 simultaneously, produced blowing air is delivered in gas holder, this stage take oxygen-rich air as vaporized chemical,

D, the oxygen enrichment blowing up stage: after completing the oxygen enrichment blowing stage in above-mentioned steps c, by DCS microcomputer control system 19 by the 4th program-controlled valve 4, 13 program-controlled valve 13, 6th program-controlled valve 6, 14 program-controlled valve 14, 9th program-controlled valve 9, 11 program-controlled valve the 11 and the 12 program-controlled valve 12 is opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve 4, 13 program-controlled valve 13, 6th program-controlled valve the 6 and the 14 program-controlled valve 14 enters the bottom of vapourizing furnace 20, by coal gas obtained behind vapourizing furnace 20 combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace 20 top, successively through the 9th program-controlled valve 9, coal gas is delivered in gas holder by the 11 program-controlled valve the 11 and the 12 program-controlled valve 12, all the other program-controlled valves do not related to all are in closing condition, and the time in described oxygen enrichment blowing up stage is 34s altogether, and this stage take steam as vaporized chemical,

E, the oxygen enrichment blowing down stage: after completing the oxygen enrichment blowing up stage in above-mentioned steps d, by DCS microcomputer control system 19 by the 4th program-controlled valve 4, 13 program-controlled valve 13, 7th program-controlled valve 7, 8th program-controlled valve the 8 and the 12 program-controlled valve 12 is opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve 4, 13 program-controlled valve 13 and the 7th program-controlled valve 7 enter the top of vapourizing furnace 20, by coal gas obtained behind vapourizing furnace 20 combustion coal seam, coal gas is discharged by the bottom of vapourizing furnace 20, through the 8th program-controlled valve the 8 and the 12 program-controlled valve 12, coal gas is delivered in gas holder successively, all the other program-controlled valves do not related to all are in closing condition, and the time in described oxygen enrichment blowing down stage is 59s altogether, this stage take steam as vaporized chemical, after completing the above-mentioned oxygen enrichment blowing down stage, the oxygen enrichment secondary blowing up stage can be carried out, so circulate,

Three, when needs carry out oxygen enrichment continuously gas pattern processed time, press oxygen enrichment gas mode button 17 processed continuously, controlled by DCS microcomputer control system 19 pairs of program-controlled valves, start oxygen enrichment gas pattern processed continuously, oxygen enrichment continuously gas pattern processed comprises the oxygen enrichment continuous blowing up stage;

A, the oxygen enrichment continuous blowing up stage: DCS microcomputer control system 19 controls the first program-controlled valve 1, second program-controlled valve 2, 3rd program-controlled valve 3, 4th program-controlled valve 4, 5th program-controlled valve 5, 14 program-controlled valve 14, 9th program-controlled valve 9, 11 program-controlled valve the 11 and the 12 program-controlled valve 12 is opened, pressure is that the air of 45KPa enters in surge tank 21 by the second program-controlled valve 2, pressure is that the oxygen of 48KPa enters in surge tank 21 by the first program-controlled valve 1, pressure is that the steam of 54KPa enters in surge tank 21 by the 4th program-controlled valve 4 and the 5th program-controlled valve 5, DCS microcomputer control system 19 is according to oxygen flow meter 22, the data of air flowmeter 23 and steam-flow meter 24 control the first program-controlled valve 1, the opening degree of the second program-controlled valve 2 and the 4th program-controlled valve 4, and the gaseous constituent content detected by gas ingredients detector 25 in surge tank 21, the gasifying agent pressure in surge tank 21 is made to be 44KPa, in surge tank 21, the oxygen level of vaporized chemical is 27% ~ 29%, the water vapour content of vaporized chemical is 45% ~ 47%, a nitrogen content of vaporized chemical is 25% ~ 27%, the outlet of surge tank 21 enters the bottom of vapourizing furnace 20 by the 3rd program-controlled valve the 3 and the 14 program-controlled valve 14, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace 20 top, through the 9th program-controlled valve the 9, the 11 program-controlled valve the 11 and the 12 program-controlled valve 12, coal gas is delivered in gas holder successively, all the other program-controlled valves do not related to all are in closing condition, this stage take oxygen-rich steam as vaporized chemical,

Four, when needs carry out down blowing gas pattern on oxygen enrichment, press down blowing gas mode button 18 on oxygen enrichment, controlled by DCS microcomputer control system 19 pairs of program-controlled valves, start down blowing gas pattern on oxygen enrichment: on oxygen enrichment, down blowing gas pattern comprises oxygen-rich steam blowing up stage and oxygen-rich steam blowing down stage;

A, the oxygen-rich steam blowing up stage: DCS microcomputer control system 19 controls the first program-controlled valve 1, second program-controlled valve 2, 3rd program-controlled valve 3, 4th program-controlled valve 4, 5th program-controlled valve 5, 14 program-controlled valve 14, 9th program-controlled valve 9, 11 program-controlled valve the 11 and the 12 program-controlled valve 12 is opened, pressure is that the air of 45KPa enters in surge tank 21 by the second program-controlled valve 2, pressure is that the oxygen of 48KPa enters in surge tank 21 by the first program-controlled valve 1, pressure is that the steam of 54KPa enters in surge tank 21 by the 4th program-controlled valve 4 and the 5th program-controlled valve 5, DCS microcomputer control system 19 is according to oxygen flow meter 22, the data of air flowmeter 23 and steam-flow meter 24 control the first program-controlled valve 1, the opening degree of the second program-controlled valve 2 and the 4th program-controlled valve 4, and the gaseous constituent content detected by gas ingredients detector 25 in surge tank 21, the gasifying agent pressure in surge tank 21 is made to be 44KPa, in surge tank 21, the oxygen level of vaporized chemical is 27% ~ 29%, the water vapour content of vaporized chemical is 45% ~ 47%, a nitrogen content of vaporized chemical is 25% ~ 27%, the outlet of surge tank 21 enters the bottom of vapourizing furnace 20 by the 3rd program-controlled valve the 3 and the 14 program-controlled valve 14, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace 20 top, through the 9th program-controlled valve the 9, the 11 program-controlled valve the 11 and the 12 program-controlled valve 12, coal gas is delivered in gas holder successively, all the other program-controlled valves do not related to all are in closing condition, the described oxygen-rich steam blowing up stage is 90s, this stage take oxygen-rich steam as vaporized chemical,

B, the oxygen-rich steam blowing down stage: after completing the oxygen-rich steam blowing up stage in above-mentioned steps a, DCS microcomputer control system 19 controls the first program-controlled valve 1, second program-controlled valve 2, 3rd program-controlled valve 3, 4th program-controlled valve 4, 5th program-controlled valve 5, 6th program-controlled valve 6, 7th program-controlled valve 7, 8th program-controlled valve the 8 and the 12 program-controlled valve 12 is opened, pressure is that the air of 45KPa enters in surge tank 21 by the second program-controlled valve 2, pressure is that the oxygen of 48KPa enters in surge tank 21 by the first program-controlled valve 1, pressure is that the steam of 54KPa enters in surge tank 21 by the 4th program-controlled valve 4 and the 5th program-controlled valve 5, DCS microcomputer control system 19 is according to oxygen flow meter 22, the data of air flowmeter 23 and steam-flow meter 24 control the first program-controlled valve 1, the opening degree of the second program-controlled valve 2 and the 4th program-controlled valve 4, and the gaseous constituent content detected by gas ingredients detector 25 in surge tank 21, the gasifying agent pressure in surge tank 21 is made to be 44KPa, in surge tank 21, the oxygen level of vaporized chemical is 27% ~ 29%, the water vapour content of vaporized chemical is 45% ~ 47%, a nitrogen content of vaporized chemical is 25% ~ 27%, the outlet of surge tank 21 is by the 3rd program-controlled valve 3,6th program-controlled valve 6 and the 7th program-controlled valve 7 enter the top of vapourizing furnace 20, by coal gas obtained behind vapourizing furnace 20 combustion coal seam, coal gas is discharged by the bottom of vapourizing furnace 20, delivers in gas holder successively through the 8th program-controlled valve the 8 and the 12 program-controlled valve 12 by coal gas, all the other program-controlled valves do not related to all are in closing condition, and the time in described oxygen-rich steam blowing down stage is 30s altogether, this stage is vaporized chemical with oxygen-rich steam, after completing the above-mentioned oxygen-rich steam blowing down stage, can carry out the oxygen-rich steam blowing up stage, so circulate.

The oxygen enrichment continuous blowing up stage of described oxygen enrichment continuously in gas pattern processed; On oxygen enrichment, down blowing gas pattern comprises oxygen-rich steam blowing up stage and oxygen-rich steam blowing down stage; Above-mentioned three phases starts front first program-controlled valve 1 and the second program-controlled valve 2 time delay 2s opens.In the present invention, the order of four kinds of gas patterns processed is opened with the first program-controlled valve 1 and the second program-controlled valve 2 time delay 2s and is combined, and steam can be made first to enter this invention system inside and replace to ensure safety to the semi-water gas that previous step is produced in pipeline and vapourizing furnace.

When described four kinds of gas patterns processed switch, in accordance with the following steps: step one: blowing out is carried out to vapourizing furnace 20; Second step: after completing steps one, DCS microcomputer control system 19 controls the 9th program-controlled valve 9 and emptying program-controlled valve 33 is opened, and all the other program-controlled valves do not related to all are in closing condition, carry out safety vent process, and the time of safety vent process is 10s; Step 3: in completing steps two after safety vent process, DCS microcomputer control system 19 closes the 9th program-controlled valve 9 and emptying program-controlled valve 33, step 4: after completing steps three, blow-on is carried out to vapourizing furnace 20, step 5: after vapourizing furnace 20 blow-on of completing steps four, DCS microcomputer control system 19 enters corresponding gas pattern processed automatically.

Embodiment one

When needs carry out normal air intermittent gas preparation pattern, press normal air intermittent gas preparation mode button 15, controlled by DCS microcomputer control system 19 pairs of program-controlled valves, start general batch air-making gas pattern, normal air intermittent gas preparation pattern comprises secondary blowing up stage, the stage of blowing off, blowing stage, blowing up stage and blowing down stage;

E, the blowing down stage: after completing the blowing up stage in above-mentioned steps d, by DCS microcomputer control system 19 by the 4th program-controlled valve 4, 13 program-controlled valve 13, 7th program-controlled valve 7, 8th program-controlled valve the 8 and the 12 program-controlled valve 12 is opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve 4, 13 program-controlled valve 13 and the 7th program-controlled valve 7 enter the top of vapourizing furnace 20, by coal gas obtained behind vapourizing furnace 20 combustion coal seam, coal gas is discharged by the bottom of vapourizing furnace 20, through the 8th program-controlled valve the 8 and the 12 program-controlled valve 12, coal gas is delivered in gas holder successively, all the other program-controlled valves do not related to all are in closing condition, and the time in described blowing down stage is 54s altogether, this stage take steam as vaporized chemical, after completing the above-mentioned blowing down stage, can the secondary blowing up stage be carried out, so circulate.

Embodiment two

When needs carry out oxygen enrichment intermittent gas preparation pattern, press oxygen enrichment intermittent gas preparation mode button 16, controlled by DCS microcomputer control system 19 pairs of program-controlled valves, startup oxygen enrichment intermittent gas preparation pattern, oxygen enrichment intermittent gas preparation pattern comprises the oxygen enrichment secondary blowing up stage, oxygen enrichment blows off the stage, oxygen enrichment is dried stage, oxygen enrichment blowing up stage and oxygen enrichment blowing down stage;

E, the oxygen enrichment blowing down stage: after completing the oxygen enrichment blowing up stage in above-mentioned steps d, by DCS microcomputer control system 19 by the 4th program-controlled valve 4, 13 program-controlled valve 13, 7th program-controlled valve 7, 8th program-controlled valve the 8 and the 12 program-controlled valve 12 is opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve 4, 13 program-controlled valve 13 and the 7th program-controlled valve 7 enter the top of vapourizing furnace 20, by coal gas obtained behind vapourizing furnace 20 combustion coal seam, coal gas is discharged by the bottom of vapourizing furnace 20, through the 8th program-controlled valve the 8 and the 12 program-controlled valve 12, coal gas is delivered in gas holder successively, all the other program-controlled valves do not related to all are in closing condition, and the time in described oxygen enrichment blowing down stage is 59s altogether, this stage take steam as vaporized chemical, after completing the above-mentioned oxygen enrichment blowing down stage, the oxygen enrichment secondary blowing up stage can be carried out, so circulate.

Embodiment three

When needs carry out oxygen enrichment continuously gas pattern processed time, press oxygen enrichment gas mode button 17 processed continuously, controlled by DCS microcomputer control system 19 pairs of program-controlled valves, start oxygen enrichment gas pattern processed continuously, oxygen enrichment continuously gas pattern processed comprises the oxygen enrichment continuous blowing up stage;

A, the oxygen enrichment continuous blowing up stage: DCS microcomputer control system 19 controls the first program-controlled valve 1, second program-controlled valve 2, 3rd program-controlled valve 3, 4th program-controlled valve 4, 5th program-controlled valve 5, 14 program-controlled valve 14, 9th program-controlled valve 9, 11 program-controlled valve the 11 and the 12 program-controlled valve 12 is opened, pressure is that the air of 45KPa enters in surge tank 21 by the second program-controlled valve 2, pressure is that the oxygen of 48KPa enters in surge tank 21 by the first program-controlled valve 1, pressure is that the steam of 54KPa enters in surge tank 21 by the 4th program-controlled valve 4 and the 5th program-controlled valve 5, DCS microcomputer control system 19 is according to oxygen flow meter 22, the data of air flowmeter 23 and steam-flow meter 24 control the first program-controlled valve 1, the opening degree of the second program-controlled valve 2 and the 4th program-controlled valve 4, and the gaseous constituent content detected by gas ingredients detector 25 in surge tank 21, the gasifying agent pressure in surge tank 21 is made to be 44KPa, in surge tank 21, the oxygen level of vaporized chemical is 27% ~ 29%, the water vapour content of vaporized chemical is 45% ~ 47%, a nitrogen content of vaporized chemical is 25% ~ 27%, the outlet of surge tank 21 enters the bottom of vapourizing furnace 20 by the 3rd program-controlled valve the 3 and the 14 program-controlled valve 14, by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace 20 top, through the 9th program-controlled valve the 9, the 11 program-controlled valve the 11 and the 12 program-controlled valve 12, coal gas is delivered in gas holder successively, all the other program-controlled valves do not related to all are in closing condition, this stage take oxygen-rich steam as vaporized chemical.

Embodiment four

When needs carry out down blowing gas pattern on oxygen enrichment, press down blowing gas mode button 18 on oxygen enrichment, controlled by DCS microcomputer control system 19 pairs of program-controlled valves, start down blowing gas pattern on oxygen enrichment: on oxygen enrichment, down blowing gas pattern comprises oxygen-rich steam blowing up stage and oxygen-rich steam blowing down stage;

Embodiment five

When normal air intermittent gas preparation pattern is switched to oxygen enrichment intermittent gas preparation pattern by needs, need to carry out following steps: step one: carry out blowing out to vapourizing furnace 20; Second step: after completing steps one, DCS microcomputer control system 19 controls the 9th program-controlled valve 9 and emptying program-controlled valve 33 is opened, and all the other program-controlled valves do not related to all are in closing condition, carry out safety vent process, and the time of safety vent process is 10s; Step 3: in completing steps two after safety vent process, DCS microcomputer control system 19 closes the 9th program-controlled valve 9 and emptying program-controlled valve 33, step 4: after completing steps three, blow-on is carried out to vapourizing furnace 20, step 5: after vapourizing furnace 20 blow-on of completing steps four, DCS microcomputer control system 19 enters corresponding gas pattern processed, i.e. oxygen enrichment intermittent gas preparation pattern automatically.

Gas-made technology in the present invention comprises normal air intermittent gas preparation pattern, oxygen enrichment intermittent gas preparation pattern, oxygen enrichment is down blowing gas pattern on gas pattern processed and oxygen enrichment continuously, in above-mentioned four kinds of gas patterns processed, the switching of any gas pattern processed all needs the step in embodiment five, as: normal air intermittent gas preparation pattern switches to oxygen enrichment gas pattern processed continuously, normal air intermittent gas preparation pattern switches to down blowing gas pattern on oxygen enrichment, oxygen enrichment intermittent gas preparation pattern switches to normal air intermittent gas preparation pattern, oxygen enrichment intermittent gas preparation pattern switches to oxygen enrichment gas pattern processed continuously, oxygen enrichment intermittent gas preparation pattern switches to down blowing gas pattern on oxygen enrichment, oxygen enrichment continuously gas pattern processed switches to normal air intermittent gas preparation pattern, oxygen enrichment continuously gas pattern processed switches to oxygen enrichment intermittent gas preparation pattern, oxygen enrichment continuously gas pattern processed switches to down blowing gas pattern on oxygen enrichment, on oxygen enrichment, down blowing gas pattern switches to normal air intermittent gas preparation pattern, on oxygen enrichment, down blowing gas pattern switches to down blowing gas pattern on oxygen enrichment intermittent gas preparation pattern and oxygen enrichment and switches to oxygen enrichment gas pattern processed etc. continuously, its operating method and step are all identical with embodiment 5.

The present invention is not limited to above-described embodiment; above-described embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the scope that aim of the present invention and claim protect; also have a lot of form, these all belong to protection scope of the present invention.

Claims

1. the multiplex gasifier system device of air of fixed bed, comprise the vapourizing furnace (20) that top is provided with coal inlet, the both sides of the bottom of vapourizing furnace (20) are respectively equipped with slag notch, it is characterized in that: oxygen channel is connected with the import of surge tank (21) by the first program-controlled valve (1), the outlet of surge tank (21) by pipeline successively with the 3rd program-controlled valve (3), 14 program-controlled valve (14) is connected with the bottom of vapourizing furnace (20), pipeline between 14 program-controlled valve (14) and the bottom of vapourizing furnace (20) is provided with the first threeway (26), 3rd end of the first threeway (26) is connected with the 12 program-controlled valve (12) with the 8th program-controlled valve (8) successively by pipeline, 12 program-controlled valve (12) is connected with gas holder, air line is connected with the import of surge tank (21) by the second program-controlled valve (2), steam-pipe is successively by the 4th program-controlled valve (4), 13 program-controlled valve (13) is connected with the inlet mouth on vapourizing furnace (20) top with the 7th program-controlled valve (7), pipeline between described 4th program-controlled valve (4) and the 13 program-controlled valve (13) is provided with the second threeway (27), 3rd end of the second threeway (27) is connected with the 5th program-controlled valve (5) by pipeline, 5th program-controlled valve (5) is connected with the import of surge tank (21), pipeline between described 13 program-controlled valve (13) and the 7th program-controlled valve (7) is provided with the 3rd threeway (28), 3rd end of the 3rd threeway (28) is connected with the 3rd end of the 7th threeway (32) be arranged between the 3rd program-controlled valve (3) and the 14 program-controlled valve (14) on pipeline by the 6th program-controlled valve (6), the air outlet on vapourizing furnace (20) top is connected with the 11 program-controlled valve (11) with the 9th program-controlled valve (9) successively by pipeline, 11 program-controlled valve (11) is connected by the 3rd end of pipeline with the 6th threeway (31) on the pipeline be arranged between the 8th program-controlled valve (8) and the 12 program-controlled valve (12), pipeline between described 9th program-controlled valve (9) and the 11 program-controlled valve (11) is provided with the 4th threeway (29), 3rd end of the 4th threeway (29) is connected with blowing air post burning processing device with the tenth program-controlled valve (10) successively by pipeline, described first program-controlled valve (1), second program-controlled valve (2), 3rd program-controlled valve (3), 4th program-controlled valve (4), 5th program-controlled valve (5), 6th program-controlled valve (6), 7th program-controlled valve (7), 8th program-controlled valve (8), 9th program-controlled valve (9), tenth program-controlled valve (10), 11 program-controlled valve (11), 12 program-controlled valve (12), 13 program-controlled valve (13) is connected with DCS microcomputer control system (19) respectively with the 14 program-controlled valve (14), described DCS microcomputer control system (19) respectively with normal air intermittent gas preparation mode button (15), oxygen enrichment intermittent gas preparation mode button (16), oxygen enrichment continuously gas mode button (17) processed is connected with down blowing gas mode button (18) on oxygen enrichment, the 5th threeway (30) is provided with between 3rd end of the 4th described threeway (29) and the tenth program-controlled valve (10), 3rd end of the 5th threeway (30) is connected with air by emptying program-controlled valve (33), described DCS microcomputer control system (19) is connected with emptying program-controlled valve (33).

2. the multiplex gasifier system device of air of fixed bed according to claim 1, it is characterized in that: the pipeline between described first program-controlled valve (1) and the import of surge tank (21) is provided with oxygen flow meter (22), pipeline between described second program-controlled valve (2) and the import of surge tank (21) is provided with air flowmeter (23), pipeline between described 4th program-controlled valve (4) and the second threeway (27) is provided with steam-flow meter (24), and described surge tank (21) is provided with gas ingredients detector (25); Described oxygen flow meter (22), air flowmeter (23), steam-flow meter (24) is connected with DCS microcomputer control system (19) respectively with gas component detector (25).

3. one kind utilizes the gas-made technology of the multiplex gasifier system device of air of the fixed bed described in claim 1 or 2, it is characterized in that: this gas-made technology comprises normal air intermittent gas preparation pattern, oxygen enrichment intermittent gas preparation pattern, oxygen enrichment is down blowing gas pattern on gas pattern processed and oxygen enrichment continuously;

One, when needs carry out normal air intermittent gas preparation pattern, press normal air intermittent gas preparation mode button (15), by DCS microcomputer control system (19), program-controlled valve is controlled, start general batch air-making gas pattern, normal air intermittent gas preparation pattern comprises secondary blowing up stage, the stage of blowing off, blowing stage, blowing up stage and blowing down stage;

A, the secondary blowing up stage: by DCS microcomputer control system (19) by the 4th program-controlled valve (4), 13 program-controlled valve (13), 6th program-controlled valve (6), 14 program-controlled valve (14), 9th program-controlled valve (9), 11 program-controlled valve (11) and the 12 program-controlled valve (12) are opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve (4), 13 program-controlled valve (13), 6th program-controlled valve (6) and the 14 program-controlled valve (14) enter the bottom of vapourizing furnace (20), by coal gas obtained behind vapourizing furnace (20) combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace (20) top, successively through the 9th program-controlled valve (9), coal gas is delivered in gas holder by the 11 program-controlled valve (11) and the 12 program-controlled valve (12), all the other program-controlled valves do not related to all are in closing condition, and the time in described secondary blowing up stage is 8s altogether, this stage take steam as vaporized chemical,

B, blow off the stage: after completing the secondary blowing up stage in above-mentioned steps a, by DCS microcomputer control system (19) by the second program-controlled valve (2), 3rd program-controlled valve (3), 14 program-controlled valve (14), 9th program-controlled valve (9), 11 program-controlled valve (11) and the 12 program-controlled valve (12) are opened, pressure is that the air of 45KPa is by the second program-controlled valve (2), surge tank (21), 3rd program-controlled valve (3) and the 14 program-controlled valve (14) enter the bottom of vapourizing furnace (20), by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace (20) top, successively through the 9th program-controlled valve (9), coal gas is delivered in gas holder by the 11 program-controlled valve (11) and the 12 program-controlled valve (12), all the other program-controlled valves do not related to all are in closing condition, described in blow off the time in stage be 8s, this stage take air as vaporized chemical,

C, the blowing stage: complete in above-mentioned steps b blow off the stage after, DCS microcomputer control system (19) controls the second program-controlled valve (2), 3rd program-controlled valve (3), 14 program-controlled valve (14), 9th program-controlled valve (9) and the tenth program-controlled valve (10) are opened, pressure is that the air of 45KPa is by the second program-controlled valve (2), surge tank (21), 3rd program-controlled valve (3) and the 14 program-controlled valve (14) enter the bottom of vapourizing furnace (20), by blowing air obtained behind vapourizing furnace combustion coal seam, blowing air is discharged by the air outlet on vapourizing furnace (20) top, through the 9th program-controlled valve (9) and the tenth program-controlled valve (10), blowing air is delivered in the burning processing device of blowing air post successively, in above-mentioned state, all the other program-controlled valves do not related to all are in closing condition, the time in blowing stage is 21s altogether, in the time of 7s last in described 21s, close the tenth program-controlled valve (10), open the 11 program-controlled valve (11) and the 12 program-controlled valve (12) simultaneously, produced blowing air is delivered in gas holder, this stage take air as vaporized chemical,

D, the blowing up stage: after completing the blowing stage in above-mentioned steps c, by DCS microcomputer control system (19) by the 4th program-controlled valve (4), 13 program-controlled valve (13), 6th program-controlled valve (6), 14 program-controlled valve (14), 9th program-controlled valve (9), 11 program-controlled valve (11) and the 12 program-controlled valve (12) are opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve (4), 13 program-controlled valve (13), 6th program-controlled valve (6) and the 14 program-controlled valve (14) enter the bottom of vapourizing furnace (20), by coal gas obtained behind vapourizing furnace (20) combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace (20) top, successively through the 9th program-controlled valve (9), coal gas is delivered in gas holder by the 11 program-controlled valve (11) and the 12 program-controlled valve (12), all the other program-controlled valves do not related to all are in closing condition, and the time in described blowing up stage is 29s altogether, this stage take steam as vaporized chemical,

E, the blowing down stage: after completing the blowing up stage in above-mentioned steps d, by DCS microcomputer control system (19) by the 4th program-controlled valve (4), 13 program-controlled valve (13), 7th program-controlled valve (7), 8th program-controlled valve (8) and the 12 program-controlled valve (12) are opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve (4), 13 program-controlled valve (13) and the 7th program-controlled valve (7) enter the top of vapourizing furnace (20), by coal gas obtained behind vapourizing furnace (20) combustion coal seam, coal gas is discharged by the bottom of vapourizing furnace (20), through the 8th program-controlled valve (8) and the 12 program-controlled valve (12), coal gas is delivered in gas holder successively, all the other program-controlled valves do not related to all are in closing condition, and the time in described blowing down stage is 54s altogether, this stage take steam as vaporized chemical, after completing the above-mentioned blowing down stage, can the secondary blowing up stage be carried out, so circulate,

Two, when needs carry out oxygen enrichment intermittent gas preparation pattern, press oxygen enrichment intermittent gas preparation mode button (16), by DCS microcomputer control system (19), program-controlled valve is controlled, startup oxygen enrichment intermittent gas preparation pattern, oxygen enrichment intermittent gas preparation pattern comprises the oxygen enrichment secondary blowing up stage, oxygen enrichment blows off the stage, oxygen enrichment is dried stage, oxygen enrichment blowing up stage and oxygen enrichment blowing down stage;

A, the oxygen enrichment secondary blowing up stage: by DCS microcomputer control system (19) by the 4th program-controlled valve (4), 13 program-controlled valve (13), 6th program-controlled valve (6), 14 program-controlled valve (14), 9th program-controlled valve (9), 11 program-controlled valve (11) and the 12 program-controlled valve (12) are opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve (4), 13 program-controlled valve (13), 6th program-controlled valve (6) and the 14 program-controlled valve (14) enter the bottom of vapourizing furnace (20), by coal gas obtained behind vapourizing furnace (20) combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace (20) top, successively through the 9th program-controlled valve (9), coal gas is delivered in gas holder by the 11 program-controlled valve (11) and the 12 program-controlled valve (12), all the other program-controlled valves do not related to all are in closing condition, and the time in described oxygen enrichment secondary blowing up stage is 12s altogether, this stage take steam as vaporized chemical,

B, oxygen enrichment blows off the stage: after completing the oxygen enrichment secondary blowing up stage in above-mentioned steps a, by DCS microcomputer control system (19) by the first program-controlled valve (1), second program-controlled valve (2), 3rd program-controlled valve (3), 14 program-controlled valve (14), 9th program-controlled valve (9), 11 program-controlled valve (11) and the 12 program-controlled valve (12) are opened, pressure is that the air of 45KPa enters surge tank (21) by the second program-controlled valve (2), pressure is that the oxygen of 48KPa enters in surge tank (21) by the first program-controlled valve (1), DCS microcomputer control system (19) controls the opening degree of the first program-controlled valve (1) and the second program-controlled valve (2) according to the data of oxygen flow meter (22) and air flowmeter (23), and the gaseous constituent content detected by gas ingredients detector (25) in surge tank (21), the oxygen-rich air pressure in surge tank (21) is made to be 42KPa, the oxygen level of surge tank (21) interior vaporized chemical is 32% ~ 35%, the outlet of surge tank (21) enters the bottom of vapourizing furnace (20) by the 3rd program-controlled valve (3) and the 14 program-controlled valve (14), by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace (20) top, successively through the 9th program-controlled valve (9), coal gas is delivered in gas holder by the 11 program-controlled valve (11) and the 12 program-controlled valve (12), all the other program-controlled valves do not related to all are in closing condition, and the time that described oxygen enrichment blows off the stage is 7s, this stage take oxygen-rich air as vaporized chemical,

C, the oxygen enrichment blowing stage: after the oxygen enrichment completed in above-mentioned steps b blows off the stage, DCS microcomputer control system (19) controls the first program-controlled valve (1), second program-controlled valve (2), 3rd program-controlled valve (3), 14 program-controlled valve (14), 9th program-controlled valve (9) and the tenth program-controlled valve (10) are opened, pressure is that the air of 45KPa enters in surge tank (21) by the second program-controlled valve (2), pressure is that the oxygen of 48KPa enters in surge tank (21) by the first program-controlled valve (1), DCS microcomputer control system (19) controls the opening degree of the first program-controlled valve (1) and the second program-controlled valve (2) according to the data of oxygen flow meter (22) and air flowmeter (23), and the gaseous constituent content detected by gas ingredients detector (25) in surge tank (21), the oxygen-rich air pressure in surge tank (21) is made to be 42KPa, the oxygen level of surge tank (21) interior vaporized chemical is 32% ~ 35%, the outlet of surge tank (21) enters the bottom of vapourizing furnace (20) by the 3rd program-controlled valve (3) and the 14 program-controlled valve (14), by blowing air obtained behind vapourizing furnace combustion coal seam, blowing air is discharged by the air outlet on vapourizing furnace (20) top, delivers in the burning processing device of blowing air post successively through the 9th program-controlled valve (9) and the tenth program-controlled valve (10) by blowing air, in above-mentioned state, all the other program-controlled valves do not related to all are in closing condition, the time in oxygen enrichment blowing stage is 13s altogether, in the time of 8s last in described 13s, close the tenth program-controlled valve (10), open the 11 program-controlled valve (11) and the 12 program-controlled valve (12) simultaneously, produced blowing air is delivered in gas holder, this stage take oxygen-rich air as vaporized chemical,

D, the oxygen enrichment blowing up stage: after completing the oxygen enrichment blowing stage in above-mentioned steps c, by DCS microcomputer control system (19) by the 4th program-controlled valve (4), 13 program-controlled valve (13), 6th program-controlled valve (6), 14 program-controlled valve (14), 9th program-controlled valve (9), 11 program-controlled valve (11) and the 12 program-controlled valve (12) are opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve (4), 13 program-controlled valve (13), 6th program-controlled valve (6) and the 14 program-controlled valve (14) enter the bottom of vapourizing furnace (20), by coal gas obtained behind vapourizing furnace (20) combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace (20) top, successively through the 9th program-controlled valve (9), coal gas is delivered in gas holder by the 11 program-controlled valve (11) and the 12 program-controlled valve (12), all the other program-controlled valves do not related to all are in closing condition, and the time in described oxygen enrichment blowing up stage is 34s altogether, this stage take steam as vaporized chemical,

E, the oxygen enrichment blowing down stage: after completing the oxygen enrichment blowing up stage in above-mentioned steps d, by DCS microcomputer control system (19) by the 4th program-controlled valve (4), 13 program-controlled valve (13), 7th program-controlled valve (7), 8th program-controlled valve (8) and the 12 program-controlled valve (12) are opened, pressure is that the steam of 54KPa is by the 4th program-controlled valve (4), 13 program-controlled valve (13) and the 7th program-controlled valve (7) enter the top of vapourizing furnace (20), by coal gas obtained behind vapourizing furnace (20) combustion coal seam, coal gas is discharged by the bottom of vapourizing furnace (20), through the 8th program-controlled valve (8) and the 12 program-controlled valve (12), coal gas is delivered in gas holder successively, all the other program-controlled valves do not related to all are in closing condition, and the time in described oxygen enrichment blowing down stage is 59s altogether, this stage take steam as vaporized chemical, after completing the above-mentioned oxygen enrichment blowing down stage, the oxygen enrichment secondary blowing up stage can be carried out, so circulate,

Three, when needs carry out oxygen enrichment continuously gas pattern processed time, press oxygen enrichment gas mode button (17) processed continuously, by DCS microcomputer control system (19), program-controlled valve is controlled, start oxygen enrichment gas pattern processed continuously, oxygen enrichment continuously gas pattern processed comprises the oxygen enrichment continuous blowing up stage;

A, the oxygen enrichment continuous blowing up stage: DCS microcomputer control system (19) controls the first program-controlled valve (1), second program-controlled valve (2), 3rd program-controlled valve (3), 4th program-controlled valve (4), 5th program-controlled valve (5), 14 program-controlled valve (14), 9th program-controlled valve (9), 11 program-controlled valve (11) and the 12 program-controlled valve (12) are opened, pressure is that the air of 45KPa enters in surge tank (21) by the second program-controlled valve (2), pressure is that the oxygen of 48KPa enters in surge tank (21) by the first program-controlled valve (1), pressure is that the steam of 54KPa enters in surge tank (21) by the 4th program-controlled valve (4) and the 5th program-controlled valve (5), DCS microcomputer control system (19) is according to oxygen flow meter (22), the data of air flowmeter (23) and steam-flow meter (24) control the first program-controlled valve (1), the opening degree of the second program-controlled valve (2) and the 4th program-controlled valve (4), and the gaseous constituent content detected by gas ingredients detector (25) in surge tank (21), the gasifying agent pressure in surge tank (21) is made to be 44KPa, the oxygen level of surge tank (21) interior vaporized chemical is 27% ~ 29%, the vapour content of vaporized chemical is 45% ~ 47%, a nitrogen content of vaporized chemical is 25% ~ 27%, the outlet of surge tank (21) enters the bottom of vapourizing furnace (20) by the 3rd program-controlled valve (3) and the 14 program-controlled valve (14), by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace (20) top, successively through the 9th program-controlled valve (9), coal gas is delivered in gas holder by the 11 program-controlled valve (11) and the 12 program-controlled valve (12), all the other program-controlled valves do not related to all are in closing condition, this stage take oxygen-rich steam as vaporized chemical,

Four, when needs carry out down blowing gas pattern on oxygen enrichment, press down blowing gas mode button (18) on oxygen enrichment, by DCS microcomputer control system (19), program-controlled valve is controlled, start down blowing gas pattern on oxygen enrichment: on oxygen enrichment, down blowing gas pattern comprises oxygen-rich steam blowing up stage and oxygen-rich steam blowing down stage;

A, the oxygen-rich steam blowing up stage: DCS microcomputer control system (19) controls the first program-controlled valve (1), second program-controlled valve (2), 3rd program-controlled valve (3), 4th program-controlled valve (4), 5th program-controlled valve (5), 14 program-controlled valve (14), 9th program-controlled valve (9), 11 program-controlled valve (11) and the 12 program-controlled valve (12) are opened, pressure is that the air of 45KPa enters in surge tank (21) by the second program-controlled valve (2), pressure is that the oxygen of 48KPa enters in surge tank (21) by the first program-controlled valve (1), pressure is that the steam of 54KPa enters in surge tank (21) by the 4th program-controlled valve (4) and the 5th program-controlled valve (5), DCS microcomputer control system (19) is according to oxygen flow meter (22), the data of air flowmeter (23) and steam-flow meter (24) control the first program-controlled valve (1), the opening degree of the second program-controlled valve (2) and the 4th program-controlled valve (4), and the gaseous constituent content detected by gas ingredients detector (25) in surge tank (21), the gasifying agent pressure in surge tank (21) is made to be 44KPa, the oxygen level of surge tank (21) interior vaporized chemical is 27% ~ 29%, the vapour content of vaporized chemical is 45% ~ 47%, a nitrogen content of vaporized chemical is 25% ~ 27%, the outlet of surge tank (21) enters the bottom of vapourizing furnace (20) by the 3rd program-controlled valve (3) and the 14 program-controlled valve (14), by coal gas obtained behind vapourizing furnace combustion coal seam, coal gas is discharged by the air outlet on vapourizing furnace (20) top, successively through the 9th program-controlled valve (9), coal gas is delivered in gas holder by the 11 program-controlled valve (11) and the 12 program-controlled valve (12), all the other program-controlled valves do not related to all are in closing condition, the described oxygen-rich steam blowing up stage is 90s, this stage take oxygen-rich steam as vaporized chemical,

B, the oxygen-rich steam blowing down stage: after the oxygen-rich steam blowing up stage in completing steps a, DCS microcomputer control system (19) controls the first program-controlled valve (1), second program-controlled valve (2), 3rd program-controlled valve (3), 4th program-controlled valve (4), 5th program-controlled valve (5), 6th program-controlled valve (6), 7th program-controlled valve (7), 8th program-controlled valve (8) and the 12 program-controlled valve (12) are opened, pressure is that the air of 45KPa enters in surge tank (21) by the second program-controlled valve (2), pressure is that the oxygen of 48KPa enters in surge tank (21) by the first program-controlled valve (1), pressure is that the steam of 54KPa enters in surge tank (21) by the 4th program-controlled valve (4) and the 5th program-controlled valve (5), DCS microcomputer control system (19) is according to oxygen flow meter (22), the data of air flowmeter (23) and steam-flow meter (24) control the first program-controlled valve (1), the opening degree of the second program-controlled valve (2) and the 4th program-controlled valve (4), and the gaseous constituent content detected by gas ingredients detector (25) in surge tank (21), the gasifying agent pressure in surge tank (21) is made to be 44KPa, the oxygen level of surge tank (21) interior vaporized chemical is 27% ~ 29%, the vapour content of vaporized chemical is 45% ~ 47%, a nitrogen content of vaporized chemical is 25% ~ 27%, the outlet of surge tank (21) is by the 3rd program-controlled valve (3), 6th program-controlled valve (6) and the 7th program-controlled valve (7) enter the top of vapourizing furnace (20), by coal gas obtained behind vapourizing furnace (20) combustion coal seam, coal gas is discharged by the bottom of vapourizing furnace (20), delivers in gas holder successively through the 8th program-controlled valve (8) and the 12 program-controlled valve (12) by coal gas, all the other program-controlled valves do not related to all are in closing condition, and the time in described oxygen-rich steam blowing down stage is 30s altogether, this stage is vaporized chemical with oxygen-rich steam, after completing the above-mentioned oxygen-rich steam blowing down stage, can carry out the oxygen-rich steam blowing up stage, so circulate.

4. the gas-made technology of the multiplex vapourizing furnace of fixed bed according to claim 3, is characterized in that: the oxygen enrichment continuous blowing up stage of described oxygen enrichment continuously in gas pattern processed; On oxygen enrichment, down blowing gas pattern comprises oxygen-rich steam blowing up stage and oxygen-rich steam blowing down stage; When above-mentioned three phases starts, the first program-controlled valve (1) and the second program-controlled valve (2) time delay 2s open.

5. the gas-made technology of the multiplex vapourizing furnace of fixed bed according to claim 3, is characterized in that: when described four kinds of gas patterns processed switch, in accordance with the following steps: step one: carry out blowing out to vapourizing furnace (20); Second step: after completing steps one, DCS microcomputer control system (19) controls the 9th program-controlled valve (9) and emptying program-controlled valve (33) is opened, all the other program-controlled valves do not related to all are in closing condition, carry out safety vent process, the time of safety vent process is 10s; Step 3: in completing steps two after safety vent process, DCS microcomputer control system (19) closes the 9th program-controlled valve (9) and emptying program-controlled valve (33), step 4: after completing steps three, blow-on is carried out to vapourizing furnace (20), step 5: after vapourizing furnace (20) blow-on of completing steps four, DCS microcomputer control system (19) enters corresponding gas pattern processed automatically.