CN206666474U - Coke oven gas desulfurization hydro-conversion system - Google Patents
Coke oven gas desulfurization hydro-conversion system Download PDFInfo
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- CN206666474U CN206666474U CN201720199006.5U CN201720199006U CN206666474U CN 206666474 U CN206666474 U CN 206666474U CN 201720199006 U CN201720199006 U CN 201720199006U CN 206666474 U CN206666474 U CN 206666474U
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- desulfurizing agent
- coke oven
- conversion system
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Abstract
The utility model discloses a kind of coke oven gas desulfurization hydro-conversion system, including connecting filter, one-level hydrogenation plant, first grade desulfurizing agent groove, secondary hydrogenation device and two-grade desulfurizing agent groove from beginning to end successively by pipeline, condensation pipe in the middle part of one-level hydrogenation is connected between the port of export of the filter and the middle part of one-level hydrogenation plant.The utility model solves the problems, such as that prior art can not meet the low sulfur amount required by synthetic reaction.
Description
Technical field
The utility model belongs to chemical technology field, and in particular to a kind of coke oven gas desulfurization hydro-conversion system.
Background technology
Coke-stove gas is the coal gas after wet desulphurization to come from coke-oven plant, and its sulfur content is typically in 200mg/m3
Left and right, but the sulfur content (0.1ppm) required by methanol synthesis catalyst is still unsatisfactory for, so sulphur is contained in purification section
Amount minimizes, and includes the H of inorganic sulfur existence form2The S and CS of organic sulfur existence form2, COS, mercaptan, thiophene.For inorganic
Sulphur we directly chemically reacted (ZnO+H using Zinc oxide desulfurizer2S=ZnS+H2O), the existence form of sulphur is not and in organic sulfur
Removing directly can be directly reacted with desulfurizing agent, it is necessary to organic sulfur is changed into inorganic sulfur after hydro-conversion and can be only achieved effective take off
Remove.The generally point two sections of progress of original hydro-conversion, first pass through one-stage hydrogenation conversion reaction, converting most organic sulfur turns into nothing
Machine sulphur, then inorganic sulfur is removed by desulfurizing agent, then (identical with one section of reaction) is converted by secondary hydrogenation, will be remaining organic
Sulphur convert inorganic sulfur, after removed with desulfurizing agent, send synthesis participate in reaction.It is to produce the preceding workshop section of methanol product.
Utility model content
The purpose of this utility model is to provide a kind of coke oven gas desulfurization hydro-conversion system, and solving prior art can not
The problem of meeting the low sulfur amount required by synthetic reaction.
The utility model is the technical scheme adopted is that a kind of coke oven gas desulfurization hydro-conversion system, including passes through pipe
Line connects filter, one-level hydrogenation plant, first grade desulfurizing agent groove, secondary hydrogenation device and two-grade desulfurizing agent groove from beginning to end successively,
One-level hydrogenation middle part condensation pipe is connected between the port of export of the filter and the middle part of one-level hydrogenation plant.
Further, secondary hydrogenation pair is connected with the entrance point of two-grade desulfurizing agent groove in the first grade desulfurizing agent groove port of export
Spool road.
Further, connect secondary hydrogenation import in the port of export of the filter with the entrance point of secondary hydrogenation device and match somebody with somebody
Sulphur pipeline.
The utility model increases condensation pipe in the middle part of one-level hydrogenation in the middle part of one-level hydrogenation plant, exceeded in oxygen content in coal gas
In the case of, it can be that part cooled coal gas enters in the middle part of one-level hydrogenation plant without heat exchange, ensure the conversion of one-level hydrogenation plant
Beds do not sinter because temperature is too high, avoid making catalyst inactivation；Increase secondary hydrogenation by-pass pipeline, make coal gas two
Subsequent transformation workshop section can be routed directly in the case that level hydrogenation plant import total sulfur is very low without secondary hydrogenation device；Two
The setting of sulphur pipeline is matched somebody with somebody in level hydrogenation import, can prevent secondary hydrogenation device devulcanization increase secondary hydrogenation device import total sulfur from containing
Amount, ensure that outlet total sulfur is not higher than import.
Brief description of the drawings
Fig. 1 is the pipeline connection diagram of existing coke oven gas desulfurization hydro-conversion system.
Fig. 2 is the pipeline connection diagram of the utility model coke oven gas desulfurization hydro-conversion system.
Wherein, 1, filter, 2, one-level hydrogenation plant, 3, first grade desulfurizing agent groove, 4, secondary hydrogenation device, 5, two-grade desulfurizing
Agent groove, A, one-level hydrogenation middle part condensation pipe, B, secondary hydrogenation by-pass pipeline, sulphur pipeline is matched somebody with somebody in C, secondary hydrogenation import.
Embodiment
As shown in figure 1, existing coke oven gas desulfurization hydro-conversion system includes connecting filter from beginning to end successively by pipeline
1st, one-level hydrogenation plant 2, first grade desulfurizing agent groove 3, secondary hydrogenation device 4 and two-grade desulfurizing agent groove 5.One-level hydrogenation plant 2 converts
Most organic sulfur, the hydrogen of hydro-conversion come from coke-stove gas.Catalyst is to organic sulfur and the hydro-conversion of alkene
Reaction is as follows：
(mercaptan) RSH+H2=RH+H2S+Q；
(thiophene) C4H4S+4H2=C4H10+H2S+Q；
(carbon disulfide) CS2+4H2=CH4+2H2S+Q；
(sulphur carbonoxide) COS+H2=CO+H2S+Q；
(ethene) C2H4+H2=C2H6。
It is too low by total sulfur after desulfurizing agent, then after the reforming catalyst of secondary hydrogenation device 4, devulcanization occurs on the contrary
Phenomenon, cause outlet total sulfur also higher than import total sulfur, it is impossible to meet the low sulfur amount required by synthetic reaction.
As shown in Fig. 2 a kind of coke oven gas desulfurization hydro-conversion system of the utility model, including pass through pipeline successively head and the tail
Connect filter 1, one-level hydrogenation plant 2, first grade desulfurizing agent groove 3, secondary hydrogenation device 4 and two-grade desulfurizing agent groove 5；Filtering
One-level hydrogenation middle part condensation pipe A is connected between the port of export of device 1 and the middle part of one-level hydrogenation plant 2；In first grade desulfurizing agent groove 3
The port of export connects secondary hydrogenation by-pass pipeline B with the entrance point of two-grade desulfurizing agent groove 5；Add in the port of export and two level of filter 1
Sulphur pipeline C is matched somebody with somebody in the entrance point connection secondary hydrogenation import of hydrogen production device 4.
Operation principle of the present utility model is as follows：
1st, condensation pipe in the middle part of one-level hydrogenation is connected between the port of export of filter and the middle part of one-level hydrogenation plant：One
Catalyst has been loaded on level hydrogenation plant top, to prevent beds overtemperature, increase one-level hydrogenation middle part condensation pipe.Through reality
Trample, using effect is good, effectively controls one-level hydrogenation plant groove bed temperature by cold shock gas, avoids bed temperature from ascending to heaven and cause
The phenomenon of overtemperature, the service life of effective guard catalyst.
2nd, secondary hydrogenation by-pass pipeline is connected with the entrance point of two-grade desulfurizing agent groove in the first grade desulfurizing agent groove port of export：
Existing secondary hydrogenation device can not be cut out online, and single groove carries out more catalyst changeout, after secondary hydrogenation by-pass pipeline is prepared, can close
Reason cuts out system and carries out handling leak source or more catalyst changeout, and can individually carry out nitrogen temperature in early stage, effectively reduces inspection
Repair the time, it is ensured that production long-term operation.
3rd, connect secondary hydrogenation import in the port of export of the filter with the entrance point of secondary hydrogenation device and match somebody with somebody sulphur pipeline：
When the entrance point sulfur content of former secondary hydrogenation device is relatively low, catalyst is matched somebody with somebody using easily there is devulcanization, increase secondary hydrogenation import
Sulphur pipeline can rationally improve the entrance point of secondary hydrogenation device, prevent fine de-sulfur devulcanization phenomenon, be advantageous to rationally to convert organic
The ability of sulphur, extend catalyst service life.
Claims (3)
1. a kind of coke oven gas desulfurization hydro-conversion system, including connect filter (1), one-level hydrogenation from beginning to end successively by pipeline
Device (2), first grade desulfurizing agent groove (3), secondary hydrogenation device (4) and two-grade desulfurizing agent groove (5), it is characterised in that in the mistake
One-level hydrogenation middle part condensation pipe (A) is connected between the port of export of filter (1) and the middle part of one-level hydrogenation plant (2).
2. according to coke oven gas desulfurization hydro-conversion system described in claim 1, it is characterised in that：In the first grade desulfurizing agent groove
(3) port of export connects secondary hydrogenation by-pass pipeline (B) with the entrance point of two-grade desulfurizing agent groove (5).
3. according to the coke oven gas desulfurization hydro-conversion system of claim 1 or 2, it is characterised in that in the filter (1)
The port of export secondary hydrogenation import connected with the entrance point of secondary hydrogenation device (4) match somebody with somebody sulphur pipeline (C).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720199006.5U CN206666474U (en) | 2017-03-03 | 2017-03-03 | Coke oven gas desulfurization hydro-conversion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720199006.5U CN206666474U (en) | 2017-03-03 | 2017-03-03 | Coke oven gas desulfurization hydro-conversion system |
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| CN206666474U true CN206666474U (en) | 2017-11-24 |
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| CN201720199006.5U Active CN206666474U (en) | 2017-03-03 | 2017-03-03 | Coke oven gas desulfurization hydro-conversion system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977233A (en) * | 2018-07-25 | 2018-12-11 | 戴乐亭 | A kind of method of coke-stove gas deoxygenation fine de-sulfur |
| CN109111341A (en) * | 2018-07-25 | 2019-01-01 | 戴乐亭 | The method of coke-stove gas and converter and/or blast furnace gas synthesizing glycol coproduction LNG |
| CN112391209A (en) * | 2020-11-17 | 2021-02-23 | 滨州中科催化技术有限公司 | Desulfurization method of coke oven gas |
| CN112521985A (en) * | 2020-11-02 | 2021-03-19 | 宁波中科远东催化工程技术有限公司 | Coke oven gas desulfurization system and control method |
-
2017
- 2017-03-03 CN CN201720199006.5U patent/CN206666474U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977233A (en) * | 2018-07-25 | 2018-12-11 | 戴乐亭 | A kind of method of coke-stove gas deoxygenation fine de-sulfur |
| CN109111341A (en) * | 2018-07-25 | 2019-01-01 | 戴乐亭 | The method of coke-stove gas and converter and/or blast furnace gas synthesizing glycol coproduction LNG |
| CN108977233B (en) * | 2018-07-25 | 2020-06-23 | 戴乐亭 | Method for deoxidizing and fine desulfurizing coke oven gas |
| CN109111341B (en) * | 2018-07-25 | 2021-10-08 | 戴乐亭 | Method for synthesizing ethylene glycol and co-producing LNG (liquefied natural gas) by using coke oven gas and converter and/or blast furnace gas |
| CN112521985A (en) * | 2020-11-02 | 2021-03-19 | 宁波中科远东催化工程技术有限公司 | Coke oven gas desulfurization system and control method |
| CN112391209A (en) * | 2020-11-17 | 2021-02-23 | 滨州中科催化技术有限公司 | Desulfurization method of coke oven gas |
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