CN204661604U - A kind of device of the continuous gas making of low pressure for dry coke quenching bringing return-air back to - Google Patents
A kind of device of the continuous gas making of low pressure for dry coke quenching bringing return-air back to Download PDFInfo
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- CN204661604U CN204661604U CN201520337242.XU CN201520337242U CN204661604U CN 204661604 U CN204661604 U CN 204661604U CN 201520337242 U CN201520337242 U CN 201520337242U CN 204661604 U CN204661604 U CN 204661604U
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- gas
- coke quenching
- dry coke
- water
- low pressure
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Abstract
The utility model discloses a kind of device of the continuous gas making of low pressure for dry coke quenching bringing return-air back to, belong to coking and coal chemical technology Prospect of Gasification Technology field, the water-gas that low pressure furnace is produced by the utility model send dry coke quenching auxiliary, reclaims the source of the gas of heat as dry coke quenching cooling.Simultaneously, remaining in coal gas and the oxygen bled and coke carry out oxidizing reaction and improve gas temperature further, in gas temperature progressively elevation process, water vapour in water-gas and coke or coke powder react and generate coal gas amount and also progressively increase, gas temperature is higher, and it is also more that water vapour and coke or coke powder react the coal gas generated; In addition, in dry coke quenching auxiliary bottom, a coal gas circulating cooling system is set, guarantees that the coke of discharging is cooled to the temperature of requirement.The utility model solves that conventional dry quenching generation investment is large, water vapour latent heat does not utilize, causes the problems such as waste and contaminate environment in the fine coke powder contaminate environment that produces and low pressure gas making water-gas.
Description
Technical field
The utility model belongs to coking and coal chemical technology Prospect of Gasification Technology field.
Background technology
Tradition coking dry coke quenching rare gas element extinguishes red-hot red Jiao, reclaim red burnt sensible heat to generate electricity to boiler develops steam vapor simultaneously, what adopt is rare gas element circulation technology, and dry coke quenching reclaims heat and produces a large amount of steam, large owing to producing quantity of steam, generally be used for generating electricity, and generation investment is comparatively large, conventional dry quenching economic benefit is not obvious, and dry coke quenching friction process produces a large amount of tiny coke powders simultaneously, be not easy to collect, not only waste resource but also affect environment.
The continuous gas making of water-gas low pressure refers to and adopts coal or coke and oxygen (air) and steam to react, and usually being less than under 0.1MPa (G) pressure condition, manufactures water-gas continuously.The water-gas that the continuous gas making of existing low pressure produces through dedusting and heat exchange produce after steam, direct employing Water spray is to water-gas cooling and dedusting, do not utilize containing a large amount of unreacted water vapour latent heat in water-gas, but condensation in spray column, its liberated heat is sent water cooling tower to be evaporated by water by washing water again and takes away, cause energy and water waste thus, in coal gas, objectionable impurities is also dispersed in air with water cooling tower simultaneously, causes environmental pollution.
Utility model content
The purpose of this utility model is: for the problem of prior art, the continuous gas making of low pressure proposing to bring return-air back to for the device of dry coke quenching, thus solves that conventional dry quenching generation investment is large, water vapour latent heat does not utilize, causes the problems such as waste and contaminate environment in the fine coke powder contaminate environment that produces and low pressure gas making water-gas.
The utility model object is realized by following technical proposals:
A kind of device of the continuous gas making of low pressure for dry coke quenching bringing return-air back to, comprise water gas-generating device, dry coke quenching auxiliary and condenswater separator, described dry coke quenching auxiliary top is provided with coke feeding mouth and gas exit, bottom is provided with coke discharge port and circulating gas entrance, middle part is provided with water-gas entrance and circulating gas outlet, the water-gas outlet of described water gas-generating device is communicated with the water-gas entrance of described dry coke quenching auxiliary, the circulating gas outlet of described dry coke quenching auxiliary is communicated with circulating gas entrance through circulation device, the gas exit of described dry coke quenching auxiliary is divided into two-way pipeline after dust-removing heat-exchanger, one road pipeline returns circulating gas entrance, be communicated with condenswater separator after the further dust-collecting and heat exchanging in another road, the gas exit of condenswater separator connects follow-up coal gas system.
As selection, also comprise cleaning apparatus, the first vapour generator and blower fan, the circulating gas outlet of described dry coke quenching auxiliary, successively after described cleaning apparatus, the first vapour generator and blower fan, is communicated with the circulating gas entrance of dry coke quenching auxiliary.
As further selection, the vapour outlet of described first vapour generator is communicated to the steam-in of water gas-generating device.
In such scheme, the heat of circulating gas, can be produced the gas making of steam feeding water gas-generating device by heat exchange again and use.
As selection, the dust-removing heat-exchanger after the gas exit of described dry coke quenching auxiliary comprises cleaning apparatus, vapour generator, heat recuperation interchanger and water cooler.
As further selection, the vapour outlet of described vapour generator can be communicated to the steam-in of water gas-generating device.
Select further as another, the gas exit of described dry coke quenching auxiliary is communicated with condenswater separator successively after gravitational precipitator, the second vapour generator, fly-ash separator, blower fan, accurate fly-ash separator, heat recuperation interchanger, water cooler, is communicated to circulating gas entrance at blower fan Hou Fen mono-road branch road simultaneously.
In such scheme, the relatively traditional rare gas element Dry Quenching Technology of the utility model, dry coke quenching byproduct steam amount has larger minimizing, and this steam can all for coking and low pressure gas making, therefore not need to build dry coke quenching power generation assembly, reduces investment outlay, simultaneously voluminous coal gas.Return coal gas reclaims heat deficiency in order to make up water coal gas cooling dry coke quenching.Return the water-gas amount that coal gas tolerance produces according to water gas-generating device to determine, water-gas amount is larger, returns coal gas amount less, when water-gas amount exceed a certain amount of after, be enough to meet when cooling dry coke quenching reclaims heat and just no longer return coal gas.
As selection, also comprise the 3rd vapour generator, the water-gas outlet of described water gas-generating device is communicated with in the middle part of described dry coke quenching auxiliary through cleaning apparatus, the 3rd vapour generator successively.
In such scheme, the water-gas of described water gas-generating device, after dedusting, directly enters in the middle part of dry coke quenching auxiliary when gas temperature is lower; When gas temperature is higher, enter vapour generator and water heat exchange produces steam, enter in the middle part of dry coke quenching auxiliary after water-gas cooling.
As further selection, the vapour outlet of described 3rd vapour generator can be communicated to the steam-in of the continuous Gas-making Furnace of low pressure.
In such scheme, in water-gas, waste heat can be produced steam by heat exchange and sends into water gas-generating device gas making and use.
As selection, described water gas-generating device is the continuous Gas-making Furnace of low pressure.
As selection, described dry coke quenching auxiliary is dry coke quenching tower.
The main scheme of aforementioned the utility model and each further selection scheme thereof can independent assortment to form multiple scheme; be the utility model can adopt and claimed scheme: as the utility model; each selection can select arbitrary combination with other; those skilled in the art can understand there is multiple combination according to prior art and common practise after understanding the utility model scheme; be the claimed technical scheme of the utility model, do not do exhaustive at this.
Working process is:
One, dry coke quenching auxiliary (dry coke quenching tower) is sent by the water-gas that water gas-generating device (the continuous Gas-making Furnace of low pressure) is produced, the source of the gas of heat is reclaimed as dry coke quenching cooling, in dry coke quenching tower, high temperature coke and reverse water gas move, high temperature coke is also progressively lowered the temperature from the motion of top lower portion, and water-gas also progressively heats up from lower to upper part motion.
They are two years old, while heat is reclaimed in aforementioned heat exchange, remaining in coal gas and the oxygen bled and coke carry out oxidizing reaction and improve gas temperature further, in gas temperature progressively elevation process, water vapour in water-gas and coke or coke powder react and generate coal gas amount and also progressively increase, gas temperature is higher, and it is also more that water vapour and coke or coke powder react the coal gas generated; In addition, in dry coke quenching auxiliary bottom, a coal gas circulating cooling system is set, coal gas is extracted out as circulating gas in the middle part of dry coke quenching tower, send into dry coke quenching tower bottom again, coke moves downward process from middle part and is recycled coal gas cooling, guarantees that the coke of discharging is cooled to the temperature of requirement.
Its three, while aforementioned two links, the heat of the circulating gas of waste heat and coal gas circulating cooling system in water-gas, can be produced steam by heat exchange again and send into low pressure Gas-making Furnace for low pressure gas making.
Thus, the utility model, in conjunction with coking dry coke quenching and water-gas gas making, achieves the effect of killing three birds with one stone.
In addition, from dry coke quenching tower top, coal gas out enters vapour generator and produces steam after dedusting, cooled coal gas again after dedusting by blower fan supercharging, when heat is reclaimed with satisfied cooling dry coke quenching for water-gas quantity not sufficient, supercharging rear portion coal gas is as returning gas and dry coke quenching bottom circulation gas is mixed into dry coke quenching tower bottom, and all the other coal gas enter accurate fly-ash separator and remove the dust wherein carried.The coal gas removing dust is introduced into heat in heat recuperation interchanger gas recovery, then enters water cooler and be cooled water cooling to normal temperature, finally enters into separator and separates gas delivery system after water of condensation.
The beneficial effects of the utility model:
(1), in water-gas contained some vapor has carried out gasification reaction with coke powder, has both reclaimed part water vapour, more coal gas of getting back, has reduced the tiny coke powder of dry coke quenching generation simultaneously.
(2) in dry coke quenching, there occurs the gasification reaction of some vapor and coke powder, this reaction is thermo-negative reaction, the circulated inert gas temperature that the gas temperature of using dry coke quenching adopts than conventional dry quenching is low, and it is fewer than conventional dry quenching cycle tolerance to enter dry coke quenching coal gas amount, make dry coke quenching byproduct steam amount have larger minimizing like this, this steam can all for coking and low pressure gas making, therefore not need to build dry coke quenching power generation assembly, reduce investment outlay, simultaneously voluminous coal gas.
(3), after dry coke quenching coal gas, can low level warm in gas recovery further after accurate dedusting, and in coal gas, water vapor condensation water is recyclable simultaneously, reduces waste water and exhaust gas emission.
Accompanying drawing explanation
Fig. 1 is the device schematic flow sheet of the utility model embodiment;
In figure, each digital number is only for marked differential, and do not represent order arrangement, wherein R1 is gas making producer, and T1 is dry coke quenching tower, and V1 is separator, and X1-5 is fly-ash separator, and E1-5 is interchanger, and P1-2 is supercharger, and 1-22 is pipeline.
Embodiment
Following non-limiting examples is for illustration of the utility model.
The continuous gas making of low pressure of the present embodiment is as follows for dry coke quenching technical process:
Flow process as shown in Figure 1.The continuous Gas-making Furnace R1 of the present embodiment low pressure exports water-gas flow ~ 43600Nm
3/ h, temperature ~ 450 DEG C, containing steam ~ 20% in water-gas, pass into after tornado dust collector X1 removes most of dust and enter in the middle part of dry coke quenching tower T1.Flow rate of coke is 100t/h, temperature about 1050 DEG C, enter in dry coke quenching tower T1 from dry coke quenching tower top, high temperature coke passes through on dry coke quenching tower T1 top and moves with reverse water gas, be cooled to ~ 490 DEG C after enter bottom, in dry coke quenching tower T1 bottom, coke is recycled gas and is cooled to ~ 155 DEG C of eliminating dry coke quenching tower T1.Circulating gas is extracted out in the middle part of dry coke quenching tower T1, temperature ~ 460 DEG C, flow 55000Nm
3/ h, removes dust through tornado dust collector X2, then enter (first) vapour generator E1 to be cooled to ~ 120 DEG C, then the 10000Nm come is returned through blower fan P1 and blower fan P2
3send into bottom dry coke quenching tower T1 after the mixing of/h coal gas, vapour generator E1 produces low-pressure steam ~ 9t/h and send low pressure continuous Gas-making Furnace R1.Go out gas temperature ~ 820 DEG C of dry coke quenching tower T1, flow ~ 56600Nm
3/ h, containing steam ~ 13% in coal gas.Go out dry coke quenching tower T1 coal gas and enter (second) vapour generator E2 after gravitational precipitator X3 remove portion dust, generation ~ 22t/h middle pressure steam (can be used for gas making) in vapour generator E2, coal gas is cooled to ~ 180 DEG C enter fly-ash separator X4 and remove part dust, then enter blower fan P2 supercharging.10000Nm after supercharging
3/ h coal gas returns bottom dry coke quenching tower T1, residue 46600Nm
3/ h coal gas enters accurate fly-ash separator X5 and removes the fine dusts of wherein carrying, the coal gas removing dust is introduced into heat in heat recuperation interchanger E3 gas recovery, enter water cooler E4 again and be cooled water cooling to normal temperature, finally enter into separator V1 and separate water of condensation, after point water, gas flow is ~ 41200Nm
3/ h, send follow-up system.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. bring the device of the continuous gas making of low pressure for dry coke quenching of return-air back to for one kind, it is characterized in that: comprise water gas-generating device, dry coke quenching auxiliary and condenswater separator, described dry coke quenching auxiliary top is provided with coke feeding mouth and gas exit, bottom is provided with coke discharge port and circulating gas entrance, middle part is provided with water-gas entrance and circulating gas outlet, the water-gas outlet of described water gas-generating device is communicated with the water-gas entrance of described dry coke quenching auxiliary, the circulating gas outlet of described dry coke quenching auxiliary is communicated with circulating gas entrance through circulation device, the gas exit of described dry coke quenching auxiliary is divided into two-way pipeline after dust-removing heat-exchanger, one road pipeline returns circulating gas entrance, be communicated with condenswater separator after the further dust-collecting and heat exchanging in another road, the gas exit of condenswater separator connects follow-up coal gas system.
2. bring the device of the continuous gas making of low pressure for dry coke quenching of return-air as claimed in claim 1 back to, it is characterized in that: also comprise cleaning apparatus, the first vapour generator and blower fan, the circulating gas outlet of described dry coke quenching auxiliary, successively after described cleaning apparatus, the first vapour generator and blower fan, is communicated with the circulating gas entrance of dry coke quenching auxiliary.
3. the continuous gas making of low pressure bringing return-air as claimed in claim 2 back to, for the device of dry coke quenching, is characterized in that: the vapour outlet of described first vapour generator is communicated to the steam-in of water gas-generating device.
4. the continuous gas making of low pressure bringing return-air as claimed in claim 1 back to, for the device of dry coke quenching, is characterized in that: the dust-removing heat-exchanger after the gas exit of described dry coke quenching auxiliary comprises cleaning apparatus, vapour generator, heat recuperation interchanger and water cooler.
5. bring the device of the continuous gas making of low pressure for dry coke quenching of return-air as claimed in claim 4 back to, it is characterized in that: the gas exit of described dry coke quenching auxiliary is communicated with condenswater separator successively after gravitational precipitator, the second vapour generator, fly-ash separator, blower fan, accurate fly-ash separator, heat recuperation interchanger, water cooler, be communicated to circulating gas entrance at blower fan Hou Fen mono-road branch road simultaneously.
6. the continuous gas making of low pressure bringing return-air as claimed in claim 4 back to, for the device of dry coke quenching, is characterized in that: the vapour outlet of described vapour generator is communicated to the steam-in of water gas-generating device.
7. bring the device of the continuous gas making of low pressure for dry coke quenching of return-air as claimed in claim 1 back to, it is characterized in that: also comprise the 3rd vapour generator, the water-gas outlet of described water gas-generating device is communicated with in the middle part of described dry coke quenching auxiliary through cleaning apparatus, the 3rd vapour generator successively.
8. the continuous gas making of low pressure bringing return-air as claimed in claim 7 back to, for the device of dry coke quenching, is characterized in that: the vapour outlet of described 3rd vapour generator is communicated to the steam-in of the continuous Gas-making Furnace of low pressure.
9. the continuous gas making of low pressure bringing return-air as claimed in claim 1 back to, for the device of dry coke quenching, is characterized in that: described water gas-generating device is the continuous Gas-making Furnace of low pressure.
10. the continuous gas making of low pressure bringing return-air as claimed in claim 1 back to, for the device of dry coke quenching, is characterized in that: described dry coke quenching auxiliary is dry coke quenching tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520337242.XU CN204661604U (en) | 2015-05-22 | 2015-05-22 | A kind of device of the continuous gas making of low pressure for dry coke quenching bringing return-air back to |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520337242.XU CN204661604U (en) | 2015-05-22 | 2015-05-22 | A kind of device of the continuous gas making of low pressure for dry coke quenching bringing return-air back to |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204661604U true CN204661604U (en) | 2015-09-23 |
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ID=54132012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520337242.XU Expired - Fee Related CN204661604U (en) | 2015-05-22 | 2015-05-22 | A kind of device of the continuous gas making of low pressure for dry coke quenching bringing return-air back to |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204661604U (en) |
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2015
- 2015-05-22 CN CN201520337242.XU patent/CN204661604U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190402 Address after: 610036 No. 30, 6th Floor, Unit 1, Building 4, Chadianzi Anrong Road, Jinniu District, Chengdu City, Sichuan Province Patentee after: Sichuan Yuexin Dake New Energy Technology Co., Ltd. Address before: 610041 No. 2 Yuan Lane, Wuhou District, Chengdu City, Sichuan Province Patentee before: Chengdu height Kodak Science and Technology Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20200522 |