CN205398562U - Device of tar among desorption coke oven gas - Google Patents
Device of tar among desorption coke oven gas Download PDFInfo
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- CN205398562U CN205398562U CN201620186244.8U CN201620186244U CN205398562U CN 205398562 U CN205398562 U CN 205398562U CN 201620186244 U CN201620186244 U CN 201620186244U CN 205398562 U CN205398562 U CN 205398562U
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- tar
- coke
- catalyst
- stove gas
- desorption
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Abstract
The utility model relates to a tar desorption device specifically is a device of tar among desorption coke oven gas, including tar pyrolysis device (2), it has tar cracking catalyst (3) that are the bed and distribute to support through catalyst support frame (4) in the tar pyrolysis device (2), tar cracking catalyst (3) are fixed through catalyst fixed device (5), a bottom side -entrance and cyclone's (1) the top gas outlet of tar pyrolysis device (2) are connected, the bottom opposite side import of tar pyrolysis device (2) is connected with the steam outlet of vapor pre -heater (6), the top export of tar pyrolysis device (2) and the bottom access connection of desulphurization unit (7). The utility model relates to a rationally, process flow is simple for the tar desorption, and the energy consumption is lower, has comparatively extensive application prospect.
Description
Technical field
This utility model relates to tar removing means field, and specifically one utilizes cat-cracker that coal-tar middle oil for coke-stove gas catalytic pyrolysis is converted into the lower carbon number hydrocarbons such as methane, and then by the device of tar elimination.
Background technology
Coke per ton is about by-product coke producer gas 400m3, the substantial amounts of coke-stove gas of by-product in the annual coke production of China, its calorific value is even more than the summation of transfering natural gas from the west to the east heating value of natural gas.Utilize coke-stove gas to produce chemical fertilizer, methanol, hydrogen etc. and at home and abroad all have more application, effectively the comprehensive utilization important in inhibiting to coke-stove gas of the tar in elimination coke-stove gas.There is blocking pipeline, the problem of corrosion pipeline or equipment in existing tar removing process, cause certain potential safety hazard in application process, and technique is also complex.
The problem easily causing tar line clogging, tar removing process complexity for current coke-stove gas, exploitation one can either prevent tar blocking pipeline, and the device that coke-stove gas can be utilized again coal-tar middle oil has important economic benefit and social value.
Summary of the invention
This utility model in order to solve the coal-tar middle oil blocking pipeline of current coke-stove gas, the problem that removing process is complicated, it is provided that a kind of feasible device utilizing tar cracking catalyst to be removed by catalytic cracking of tar.
This utility model adopts the following technical scheme that realization:
A kind of removing the device that coke-stove gas is coal-tar middle oil, including tar pyrolysis installation, supported by catalyst support frame and have the tar cracking catalyst of distribution in bed in described tar pyrolysis installation, described tar cracking catalyst is fixed device by catalyst and is fixed；The bottom side import of described tar pyrolysis installation exports with the top gas of cyclone separator and is connected, the bottom opposite side import of described tar pyrolysis installation is connected with the steam (vapor) outlet of steam preheater, and the described top exit of tar pyrolysis installation is connected with the bottom inlet of desulfurizer.
When being embodied as, in coke-stove gas outlet, cyclone dust collector is set, coke-stove gas after dedusting is directly entered cat-cracker when not cooled, take full advantage of the heat that coke-stove gas self is entrained, make it be cracked into low-carbon (LC) hydro carbons under tar cracking catalyst, reach elimination tar and improve the purpose of coke-stove gas yield and calorific value.Catalytic cracking of tar in coke-stove gas is converted into the lower carbon number hydrocarbons such as methane by resistant to sulfur tar cracking catalyst by the device removing coke-stove gas coal-tar middle oil, reach elimination tar, improve the purpose of low-carbon (LC) hydrocarbon content and calorific value in coke-stove gas, reduce the coal-tar middle oil purification energy consumption of coke-stove gas and cost.Coke-stove gas after elimination tar enters cleaning procedure, removes the impurity such as sulfur therein successively, provides the coke-stove gas of high-quality for subsequent technique.
This utility model provides and a kind of removes the new paragon that coke-stove gas is coal-tar middle oil, improves tar removal efficiency, reduces detar technological process, has good economic benefit.
Advantage of the present utility model is as follows:
1, the removing means that this coke-stove gas is coal-tar middle oil is that coke oven gas purification provides a kind of new way, solves the tar in coke-stove gas and easily blocks pipeline, the problem purifying complex process.
2, this tar removing means utilizes sulfur tolerant catalyzing cracker that coal-tar middle oil for coke-stove gas catalytic pyrolysis is converted into the lower carbon number hydrocarbons such as methane, and then reaches the purpose of elimination tar.
2, this tar removing means, takes full advantage of the heat of exhanst gas outlet, it is not necessary to extraneous heating just can so that tar reaches the temperature of catalytic pyrolysis, and making tar conversion is the lower carbon number hydrocarbons such as methane, improves the yield of low-carbon (LC) hydro carbons in coke-stove gas.
This utility model is reasonable in design, and tar removing process flow process is simple, and energy consumption is relatively low, has relatively broad application prospect.
Accompanying drawing explanation
Fig. 1 represents structural representation of the present utility model.
In figure: 1-cyclone separator, 2-tar pyrolysis installation, 3-tar cracking catalyst, 4-catalyst support frame, 5-catalyst fixes device, 6-steam preheater, 7-desulfurizer.
Detailed description of the invention
Below in conjunction with accompanying drawing, specific embodiment of the utility model is described in detail.
A kind of remove the device that coke-stove gas is coal-tar middle oil, as shown in Figure 1, including tar pyrolysis installation 2, supported by catalyst support frame 4 in described tar pyrolysis installation 2 and have the tar cracking catalyst 3 of distribution in bed, namely multilamellar fixed placement catalyst, described tar cracking catalyst 3 is fixed by the fixing device 5 of catalyst；The bottom side import of described tar pyrolysis installation 2 exports with the top gas of cyclone separator 1 and is connected, the bottom opposite side import of described tar pyrolysis installation 2 is connected with the steam (vapor) outlet of steam preheater 6, and the top exit of described tar pyrolysis installation 2 is connected with the bottom inlet of desulfurizer 7.
This tar removing means is characterized as being and utilizes resistant to sulfur tar cracking catalyst that the catalytic cracking of tar in coke-stove gas is converted into the lower carbon number hydrocarbons such as methane, to reach elimination tar, improve the purpose of coke-stove gas calorific value, tar removing means includes cyclone separator 1, it is used for the dust separating in coke-stove gas, after cyclone separator purifies, dust is discharged from separator bottom, coke-stove gas enters tar pyrolysis installation 2 from top through pipeline, equipped with tar cracking catalyst 3 in tar pyrolysis installation, the porosity appropriateness of the catalyst in bed layered distribution, can either ensure that tar fully reacts, the coke-stove gas pressure loss can be made again to maintain in the reasonable scope.Catalyst support frame 4 is used for supporting catalyst, and the fixing device 5 of catalyst is used for fixing catalyst, has ensured the stability of beds.Tar removing means adds a certain amount of preheating water steam by steam preheater 6 in coke-stove gas, to prevent catalyst surface area carbon.Coke-stove gas after elimination tar enters desulfurizer 7 and removes sulfur therein, and the coke-stove gas after desulfurization enters and purifies the further purified treatment of subsequent technique.
Being presently used for tar conversion method most economical, effective is catalystic pyrolysis, and it can not only make tar fully crack, and can improve the quality of product gas.Tar fully cracks under the high temperature conditions, and gasification produces lower carbon number hydrocarbons.Conventional resistant to sulfur tar cracking catalyst has: YZ-Y82, calcium oxide and Ni-3 catalyst.The principal element affecting catalyst YZ-Y82 and calcium oxide activity is carbon deposit, and when coke content is bigger, catalyst specific surface declines, and covers active sites, causes catalysqt deactivation.Ni-3 catalyst is under the process conditions optimized, and catalytic efficiency is high, long service life, better economy.
Finally it should be noted that; above example is only in order to illustrate the technical solution of the utility model and unrestricted; although being described in detail with reference to this utility model embodiment; it will be understood by those within the art that; the technical solution of the utility model is modified or equivalent replacement; without departure from the spirit and scope of the technical solution of the utility model, it all should be contained in claims of the present utility model.
Claims (1)
1. one kind removes the device that coke-stove gas is coal-tar middle oil, it is characterized in that: include tar pyrolysis installation (2), being supported by catalyst support frame (4) in described tar pyrolysis installation (2) and have the tar cracking catalyst (3) of distribution in bed, described tar cracking catalyst (3) is fixed by the fixing device (5) of catalyst；The bottom side import of described tar pyrolysis installation (2) exports with the top gas of cyclone separator (1) and is connected, the bottom opposite side import of described tar pyrolysis installation (2) is connected with the steam (vapor) outlet of steam preheater (6), and the top exit of described tar pyrolysis installation (2) is connected with the bottom inlet of desulfurizer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620186244.8U CN205398562U (en) | 2016-03-11 | 2016-03-11 | Device of tar among desorption coke oven gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620186244.8U CN205398562U (en) | 2016-03-11 | 2016-03-11 | Device of tar among desorption coke oven gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205398562U true CN205398562U (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620186244.8U Expired - Fee Related CN205398562U (en) | 2016-03-11 | 2016-03-11 | Device of tar among desorption coke oven gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN205398562U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108913223A (en) * | 2018-07-10 | 2018-11-30 | 中国科学院广州能源研究所 | The device and method of tar purifying in a kind of thick combustion gas of gasification of biomass |
-
2016
- 2016-03-11 CN CN201620186244.8U patent/CN205398562U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108913223A (en) * | 2018-07-10 | 2018-11-30 | 中国科学院广州能源研究所 | The device and method of tar purifying in a kind of thick combustion gas of gasification of biomass |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 Termination date: 20170311 |
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| CF01 | Termination of patent right due to non-payment of annual fee |