CN204325291U - Coke-oven gas hot method precision processing device - Google Patents
Coke-oven gas hot method precision processing device Download PDFInfo
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- CN204325291U CN204325291U CN201420827256.5U CN201420827256U CN204325291U CN 204325291 U CN204325291 U CN 204325291U CN 201420827256 U CN201420827256 U CN 201420827256U CN 204325291 U CN204325291 U CN 204325291U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model is a kind of coke-oven gas hot method precision processing device, includes gas-gas heat exchanger, and gas-gas heat exchanger comprises the first gas passage and the second gas passage; First gas channel inlet end through connection level Four compression set, the first gas path exit port end order is through is connected with air-water heat exchanger, air water separator, grade one filter and secondary filter, and secondary filter exit end is through is connected to the second gas passage; Second gas path exit port end is connected to vapour gas interchanger, and vapour gas heat exchanger exit end is through is connected to internal combustion turbine.This device can realize coke oven gas purification, meets purity requirements; Abundant recycling coke-oven gas waste heat, reduces energy consumption, reduces the wasting of resources; The integrated setting of single unit system, take up an area less, invest low, and realize automatically controlling, object stable, easy to maintenance.
Description
Technical field
The utility model relates to coke-oven gas steam combined cycle power generating field, particularly relates to a kind of coke-oven gas hot method precision processing device.
Background technology
A kind of byproduct produced is produced in the process of coke coke-oven gas is by soft coal being heated to 900 DEG C to 1000 DEG C in the chamber not passing into air.Coke-oven gas is generally containing hydrogen, methane, hydrocarbon polymer, carbon monoxide, carbonic acid gas, nitrogen etc., and it has relatively high calorific value, and at present, coke-oven gas has been used in different fields.
Because coke-oven gas has lower cost and relatively high calorific value, it can be used as fuel and uses in the gas turbine for generating.Usually, the coke-oven gas lightweight gas turbine of coke-oven gas CCPP power generation applications is converted by aircraft engine, requires into combustion engine coke-oven gas cleanliness factor very high.But in existing coking process, after coking workshop cleaning section, coke-oven gas refining plant, coke-oven gas cleanliness factor still cannot meet gas turbine inlet air requirement, need to carry out further purifying treatment to coke-oven gas for this reason.
As shown in Figure 1, existing purification techniques scheme one, filtration stage was added before coke-oven gas enters internal combustion turbine, coking process is refined coke-oven gas and is first entered compressor and carry out level Four compression, high temperature coke oven coal gas after compression enters filtration stage through cooling (being generally cooled by air-water heat exchanger), separation (being generally use air water separator to be separated), mainly comprise coarse filtration with essence two stages of filtration, impurity in coal gas to be removed, then directly enter gas turbine.The physical property that the program make use of coke-oven gas carries out purifying treatment to coal gas, coke-oven gas after compression temperature after overcooling reduces, impurity is separated out and is in a liquid state, tripping device through arranging afterwards carries out coarse filtration separation, but because the gas temperature foundation after being separated remains on below the crystallization dew point of the impurity such as benzene, naphthalene in coal gas, make each impurity continue to separate out in the duct, thus cause the frequent jams of coke-oven gas fine filter and pipeline afterwards.
As shown in Figure 2, on existing purification techniques scheme one basis, improve have purification techniques scheme two.Existing purification techniques scheme two principal feature utilizes steam to heat coke-oven gas after coke-oven gas filters, and avoids each impurity to continue liquid precipitation blocking pipe, achieve certain effect by this improvement in actual motion.But existing purification techniques scheme two system observable index is higher; And the coal gas of high temperature in scheme one and scheme two after pressurization is all the recirculated cooling water before coarse filtration directly and in air-water heat exchanger carries out heat exchange, heat is directly drained in atmospheric environment by cooling tower, cause the waste of heat on the one hand, recirculated water meeting vaporization losses part water yield in radiation processes, causes water resource waste on the other hand.
Meanwhile, all there is the shortcoming that floor space is large, facility investment is higher in existing purification techniques scheme one, existing purification techniques scheme two.
Thus, the present inventor relies on experience and the practice of being engaged in relevant industries for many years, proposes a kind of coke-oven gas hot method precision processing device, to overcome the defect of prior art.
Utility model content
The purpose of this utility model is to provide a kind of coke-oven gas hot method precision processing device, and this device can realize coke oven gas purification, meets purity requirements; Abundant recycling coke-oven gas waste heat, reduces energy consumption, reduces the wasting of resources; The integrated setting of single unit system, take up an area less, invest low, and realize automatically controlling, object stable, easy to maintenance.
The purpose of this utility model is achieved in that a kind of coke-oven gas hot method precision processing device, includes gas-gas heat exchanger, and described gas-gas heat exchanger includes the first gas passage and the second gas passage; Described first gas path exit port end order is through is connected with air-water heat exchanger, air water separator, grade one filter and secondary filter, and described secondary filter exit end is through is connected to described second gas channel inlet end; Described second gas path exit port end is connected to vapour gas interchanger, described vapour gas interchanger includes the 3rd gas passage and steam heating passage, described 3rd gas channel inlet end is connected with described second gas path exit port end is through, and described 3rd gas path exit port end is through is connected to internal combustion turbine.
In a better embodiment of the present utility model, gas-gas heat exchanger front portion is provided with the first control valve, the second control valve is provided with between described gas-gas heat exchanger and air-water heat exchanger, the 3rd control valve is provided with between described air-water heat exchanger and air water separator, the 4th control valve is provided with between described secondary filter and described gas-gas heat exchanger, be provided with the 5th control valve between described gas-gas heat exchanger and vapour gas interchanger, between described vapour gas interchanger and internal combustion turbine, be provided with the 6th control valve; The inlet end of described steam heating passage is provided with the 7th control valve of adjustable opening.
In a better embodiment of the present utility model, be provided with teletransmission pressure testing point between described secondary filter and described second gas passage, the described 3rd is provided with teletransmission temperature test point between gas passage and internal combustion turbine.
In a better embodiment of the present utility model, described gas-gas heat exchanger, air-water heat exchanger, air water separator, grade one filter and secondary filter are arranged on the platform of multi-storey steel structure framework.
In a better embodiment of the present utility model, described gas-gas heat exchanger, air-water heat exchanger, air water separator, grade one filter, secondary filter and vapour gas interchanger are all set to two pieces.
In a better embodiment of the present utility model, described gas-gas heat exchanger, air-water heat exchanger, vapour gas interchanger are tube and shell heat exchanger.
In a better embodiment of the present utility model, described air water separator is provided with far transmission level meter and electric blowdown valve.
In a better embodiment of the present utility model, described first gas channel inlet end through connection level Four compression set.
From the above mentioned, coke-oven gas of the present utility model hot method precision processing device has following beneficial effect:
(1) high temperature coke oven coal gas is separated realizes the deep purifying process of coke-oven gas through heat exchange cooling, cascade filtration, can impurity in effective elimination coke-oven gas; By to the coke-oven gas heating after filtration, make the coke-oven gas temperature of discharge keep more than certain temperature, avoid impurity and continue to separate out blocking pipe, ensure that the purity requirements of subsequent technique to coke-oven gas.
(2) be provided with gas-gas heat exchanger after level Four compression set, make full use of high temperature coke oven coal gas waste heat in order to coke-oven gas after heating and filtering, reduce the consumption of external steam; Simultaneously by high temperature coke oven coal gas and the thermal exchange of filtering rear coke-oven gas, decrease the consumption of high temperature coke oven coal gas heat exchange temperature-fall period peripheral recirculated cooling water, decrease the wasting of resources.
(3) combine skid, integrated level is high; Each parts are all set to two pieces, can switch use, ensure production efficiency and steady running; Automatization level is high, have occupation of land less, invest advantage low, stable, easy to maintenance.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1: be existing purification techniques scheme one schematic diagram.
Fig. 2: be existing purification techniques scheme two schematic diagram.
Fig. 3: be coke-oven gas of the present utility model hot method precision processing schematic diagram of device.
Fig. 4: be coke-oven gas of the present utility model hot method precision processing apparatus structure schematic diagram.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and embodiment of the present utility model is described.
As shown in Figure 3, coke-oven gas of the present utility model hot method precision processing device 100, includes gas-gas heat exchanger 2, and gas-gas heat exchanger 2 includes the first gas passage 21 and the second gas passage 22, first gas passage 21 inlet end is through is connected with the level Four compression set 1 (level Four compression set is prior art) be linked in sequence, first gas passage 21 exit end order is through to be connected with for reducing the air-water heat exchanger 3 of high temperature coke oven gas temperature, for removing in coke-oven gas the air water separator 4 of oil and water, grade one filter 5 and secondary filter 6, in the present embodiment, the filtering accuracy of grade one filter 5 is 5 μm, the filtering accuracy of secondary filter 6 is 3 μm, effectively ensure that the filtering accuracy of coke-oven gas, described secondary filter 6 exit end is through is connected to described second gas passage 22 inlet end, second gas passage 22 exit end is connected to vapour gas interchanger 7, vapour gas interchanger 7 includes the 3rd gas passage 71 and steam heating passage 72, 3rd gas passage 71 inlet end is connected with the second gas passage 22 exit end is through, 3rd gas passage 71 exit end is through is connected to internal combustion turbine 8, through the high temperature coke oven coal gas heat-shift of coke-oven gas when the second gas passage 22 and in the first gas passage 21 of lowering the temperature and filter, realize first time intensification, high-temperature steam heat-shift again when the 3rd gas passage 71 and in steam heating passage 72, realize second time to heat up, impurity is avoided to continue to separate out blocking pipe, and ensure that the purity requirements of subsequent technique to coke-oven gas.
As shown in Figure 4, for reducing occupation area of equipment, described gas-gas heat exchanger 2, air-water heat exchanger 3, air water separator 4, grade one filter 5 and secondary filter 6 are arranged on the platform of multi-storey steel structure framework 9, in the present embodiment, multi-storey steel structure framework 9 is the structure of overall double-deck partial threelayer, each equipment is longitudinally arranged on each layer platform, simultaneously in order to improve the production efficiency of coke-oven gas process, ensure operation stability, described gas-gas heat exchanger 2, air-water heat exchanger 3, air water separator 4, grade one filter 5, the quantity of secondary filter 6 and vapour gas interchanger 7 is two pieces, normal work uses wherein one, another part is as acknowledgment copy, guarantee device to be caused to stop work because of equipment failure, such as gas-gas heat exchanger 2, air-water heat exchanger 3, vapour gas interchanger 7 is two pieces and is arranged in parallel, air water separator 4, grade one filter 5, the each series connection formation one group of secondary filter 6, be arranged in parallel with another group.
Further, as shown in Figure 3, the first control valve 23 is provided with between level Four compression set 1 and gas-gas heat exchanger 2, the second control valve 24 is provided with between gas-gas heat exchanger 2 and air-water heat exchanger 3, under the control of a control valve, the switching that can realize stand-by facilities uses, and arbitrary gas-gas heat exchanger 2 can realize being communicated with arbitrary air-water heat exchanger 3; The 3rd control valve 43 is provided with between air-water heat exchanger 3 and air water separator 4, air water separator 4, grade one filter 5 and the secondary filter 6 be provided with between secondary filter 6 and gas-gas heat exchanger 2 between the 4th control valve the 62, three control valve 43 and the 4th control valve 62 integrally realizes the switching of spare part under the control of a control valve.
Be provided with the 5th control valve 25 between gas-gas heat exchanger 2 and vapour gas interchanger 7, be provided with the 6th control valve 74 between described vapour gas interchanger 7 and internal combustion turbine 8, under the control of a control valve, the switching that can realize stand-by facilities uses; The inlet end of steam heating passage 72 is provided with the 7th control valve 75 of adjustable opening, controls steam consumption according to temperature conditions.
As shown in Figure 3, in the present embodiment, be provided with teletransmission pressure testing point 61 between secondary filter 6 and the second gas passage 22, monitored by the pressure of test point to coke-oven gas, when coke-oven gas pressure is lower than the switching carrying out strainer during set(ting)value in time; Be provided with teletransmission temperature test point 73 between 3rd gas passage 71 and internal combustion turbine 8, monitored by the temperature of test point to coke-oven gas, to determine the aperture of the 7th control valve 75 in time, provide applicable steam consumption for coke-oven gas heats up.
Further, air water separator 4 is also provided with far transmission level meter 41 and electric blowdown valve 42, so that in time by the oil that removes in coke-oven gas and water device for transferring.
Above-described test point and control valve are all controlled by the Controlling System concentrated, and improve the automatic operating level of coke-oven gas hot method precision processing device 100.
In the present embodiment, be high temperature coke oven coal gas in the first gas passage 21 of gas-gas heat exchanger 2, be the coalitenessity producer gas after filtering in the second gas passage 22, the two carries out thermal exchange at gas-gas heat exchanger 2.After thermal exchange, high temperature coke oven gas temperature declines, enter in air-water heat exchanger 3, high temperature coke oven coal gas carries out second time with recirculated cooling water heat exchange and lowers the temperature in air-water heat exchanger 3, because have passed through first time cooling in gas-gas heat exchanger 2, the recirculated water consumption in air-water heat exchanger 3 needed for cooling effectively reduces; Coalitenessity producer gas after filtration in gas-gas heat exchanger 2 by with high temperature coke oven coal gas thermal exchange, temperature rises, the required steam heat that heats up in vapour gas interchanger 7 afterwards effectively reduces, this circulation exchange process effectively make use of the heat of high temperature coke oven coal gas, also effectively reduce recirculated water, steam consumption simultaneously, while reaching temperature requirement, decrease the wasting of resources.
Further, gas-gas heat exchanger 2, air-water heat exchanger 3, vapour gas interchanger 7 are tube and shell heat exchanger.
Coke-oven gas of the present utility model hot method precision processing device 100 operationally, high temperature coke oven coal gas through level Four compression set 1 enters air-water heat exchanger 3 through the first gas passage 21 of gas-gas heat exchanger 2, the recirculated water of air-water heat exchanger 3 inside makes coke-oven gas lower the temperature further, reach tar, benzene, below the impurity Tc points such as naphthalene, coalitenessity producer gas enters in air water separator 4 and removes moisture and tar, sequentially pass through grade one filter 5 and secondary filter 6 afterwards, wherein the filtering accuracy of grade one filter 5 is 5 μm, the filtering accuracy of secondary filter 6 is 3 μm, the benzene of coalitenessity producer gas intercrystalline in the filter, the impurity removals such as naphthalene.Coalitenessity producer gas after filtration enters the second gas passage 22 of gas gas interchanger 2, high temperature coke oven coal gas in first gas passage 21 carries out thermal exchange, coke-oven gas after filtration achieves first time intensification, and the high temperature coke oven coal gas in the first gas passage 21 achieves first time cooling.Filtration coke-oven gas after first time intensification enters in the 3rd gas passage 71 of vapour gas interchanger 7, heat up by continuing second time with the high-temperature steam heat-shift in steam heating passage 72, coke-oven gas temperature is made to remain on more than the impurity Tcs such as tar, benzene, naphthalene, filtration coke-oven gas after intensification no longer includes impurity and separates out, and enters into gas-engine 8 realize reuse as fuel using higher cleanliness factor.
From the above mentioned, coke-oven gas of the present utility model hot method precision processing device has following beneficial effect:
(1) high temperature coke oven coal gas is separated realizes the deep purifying process of coke-oven gas through heat exchange cooling, cascade filtration, can impurity in effective elimination coke-oven gas; By to the coke-oven gas heating after filtration, make the coke-oven gas temperature of discharge keep more than certain temperature, avoid impurity and continue to separate out blocking pipe, ensure that the purity requirements of subsequent technique to coke-oven gas.
(2) be provided with gas-gas heat exchanger after level Four compression set, make full use of high temperature coke oven coal gas waste heat in order to coke-oven gas after heating and filtering, reduce the consumption of external steam; Simultaneously by high temperature coke oven coal gas and the thermal exchange of filtering rear coke-oven gas, decrease the consumption of high temperature coke oven coal gas heat exchange temperature-fall period peripheral recirculated cooling water, decrease the wasting of resources.
(3) combine skid, integrated level is high; Each parts are all set to two pieces, can switch use, ensure production efficiency and steady running; Automatization level is high, have occupation of land less, invest advantage low, stable, easy to maintenance.
The foregoing is only the schematic embodiment of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (8)
1. a coke-oven gas hot method precision processing device, is characterized in that: described coke-oven gas hot method precision processing device includes gas-gas heat exchanger, and described gas-gas heat exchanger includes the first gas passage and the second gas passage; Described first gas path exit port end order is through is connected with air-water heat exchanger, air water separator, grade one filter and secondary filter, and described secondary filter exit end is through is connected to described second gas channel inlet end; Described second gas path exit port end is connected to vapour gas interchanger, described vapour gas interchanger includes the 3rd gas passage and steam heating passage, described 3rd gas channel inlet end is connected with described second gas path exit port end is through, and described 3rd gas path exit port end is through is connected to internal combustion turbine.
2. coke-oven gas hot method precision processing device as claimed in claim 1, it is characterized in that: gas-gas heat exchanger front portion is provided with the first control valve, the second control valve is provided with between described gas-gas heat exchanger and air-water heat exchanger, the 3rd control valve is provided with between described air-water heat exchanger and air water separator, the 4th control valve is provided with between described secondary filter and described gas-gas heat exchanger, be provided with the 5th control valve between described gas-gas heat exchanger and vapour gas interchanger, between described vapour gas interchanger and internal combustion turbine, be provided with the 6th control valve; The inlet end of described steam heating passage is provided with the 7th control valve of adjustable opening.
3. coke-oven gas hot method precision processing device as claimed in claim 2, it is characterized in that: be provided with teletransmission pressure testing point between described secondary filter and described second gas passage, the described 3rd is provided with teletransmission temperature test point between gas passage and internal combustion turbine.
4. coke-oven gas hot method precision processing device as claimed in claim 1, is characterized in that: described gas-gas heat exchanger, air-water heat exchanger, air water separator, grade one filter and secondary filter are arranged on the platform of multi-storey steel structure framework.
5. coke-oven gas hot method precision processing device as claimed in claim 1, is characterized in that: described gas-gas heat exchanger, air-water heat exchanger, air water separator, grade one filter, secondary filter and vapour gas interchanger are all set to two pieces.
6. coke-oven gas hot method precision processing device as claimed in claim 1, is characterized in that: described gas-gas heat exchanger, air-water heat exchanger, vapour gas interchanger are tube and shell heat exchanger.
7. coke-oven gas hot method precision processing device as claimed in claim 1, is characterized in that: described air water separator is provided with far transmission level meter and electric blowdown valve.
8. coke-oven gas hot method precision processing device as claimed in claim 1, is characterized in that: described first gas channel inlet end through connection level Four compression set.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420827256.5U CN204325291U (en) | 2014-12-23 | 2014-12-23 | Coke-oven gas hot method precision processing device |
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| CN201420827256.5U CN204325291U (en) | 2014-12-23 | 2014-12-23 | Coke-oven gas hot method precision processing device |
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| CN204325291U true CN204325291U (en) | 2015-05-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433804A (en) * | 2016-10-20 | 2017-02-22 | 内蒙古京能锡林煤化有限责任公司 | Trapping method and trapping system for tar in coal gas |
| CN108825383A (en) * | 2018-08-22 | 2018-11-16 | 上海力顺燃机科技有限公司 | Coke-stove gas enters temprature control method and control system before gas turbine |
-
2014
- 2014-12-23 CN CN201420827256.5U patent/CN204325291U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433804A (en) * | 2016-10-20 | 2017-02-22 | 内蒙古京能锡林煤化有限责任公司 | Trapping method and trapping system for tar in coal gas |
| CN108825383A (en) * | 2018-08-22 | 2018-11-16 | 上海力顺燃机科技有限公司 | Coke-stove gas enters temprature control method and control system before gas turbine |
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