CN205874328U - Device for preventing crystallization of equipment carbon ammonium is eliminated to in low temperature methanol washing system ammonia, organic sulfur accumulation - Google Patents
Device for preventing crystallization of equipment carbon ammonium is eliminated to in low temperature methanol washing system ammonia, organic sulfur accumulation Download PDFInfo
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- CN205874328U CN205874328U CN201620702188.9U CN201620702188U CN205874328U CN 205874328 U CN205874328 U CN 205874328U CN 201620702188 U CN201620702188 U CN 201620702188U CN 205874328 U CN205874328 U CN 205874328U
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Abstract
The utility model relates to a device for preventing crystallization of equipment carbon ammonium is eliminated to in low temperature methanol washing system ammonia, organic sulfur accumulation belongs to organic chemistry engineering technical field, including hot regenerator column, hot regenerator reflux drum, hot regenerator column condenser, hydrogen sulfide rich gas condenser, hydrogen sulfide rich gas output tube, hot regenerator reflux pump, methyl alcohol separator, extraction apparatus, the ooff valve that sprays methyl alcohol, backwash pump, BTX aromatics discharge pipe, extraction rectifying column overhead condenser, extraction rectifying column, the useless water heat exchanger of extraction rectifying column feeding / methyl alcohol, the useless water discharging tube of methyl alcohol, methanol -water rectifying column, with being rich in the spray methyl alcohol of the hot regenerator column phegma of organic sulfur as hydrogen sulfide rich gas condenser on a small quantity, solved the accumulative total of system's ammonia and organic sulfur with minimum methyl alcohol volume, can not cause too big burden to prewashing methyl alcohol regeneration system again, solved equipment carbon ammonium crystallization problem simultaneously.
Description
Technical field
This utility model is a kind of prevents the accumulation of ammonia in rectisol system, organic sulfur the dress of abatement apparatus carbon crystalline ammonium
Put, belong to Organic Chemical Engineering technical field.
Background technology
Low-temp methanol washing process is the 1950's, by strange (Lurgi) company in Germany Shandong and woods (Linde) company connection
Run a kind of raw material gas purifying method sent out jointly, after the sixties in 20th century, along with the Large-scale Ammonia Plant dress as raw material with residual oil and coal
The appearance put and development, low-temp methanol washing technology obtains widely should in ammonia processed and methanol-fueled CLC and F-T synthesis industry
With.Low-temp methanol washing method can remove the various ingredients in gas, and in a low temperature of-30 DEG C to-70 DEG C, methanol can be simultaneously
The solid particulate matter in H2S, COS, CS2, RSH, C4H4S, CO2, HCN, NH3, aromatic hydrocarbon and raw gas in removing raw gas
Etc. component.
Although raw gas is designed with Ammonic washing tower, but the ammonia of trace can bring system into, accumulative in system, especially exists
In hot recycling column overhead condenser, in order to reclaim the methanol carried in hydrogen sulfide rich gas, it is necessary to carry out condensation at low temperature, therefore, exist
Form carbon crystalline ammonium on heat exchanger, affect heat transfer effect.Meanwhile, mercaptan, thioether, thiophene, the organic sulfur such as CS2 also can be in low temperature first
Alcohol is washed in system accumulative.
Utility model content
This utility model overcomes the deficiencies in the prior art, technical problem to be solved to be to provide one and prevent low-temp methanol
Wash ammonia in system, organic sulfur accumulation the device of abatement apparatus carbon crystalline ammonium.
For solving above-mentioned technical problem, the technical scheme that this utility model is used is: one prevents from low-temp methanol from washing being
Ammonia, organic sulfur accumulation the device of abatement apparatus carbon crystalline ammonium in system: it includes hot recycling tower 1, hot recycling tower backflash 2, heat
Regenerator condenser 3, hydrogen sulfide rich gas condenser 4, hydrogen sulfide rich gas outlet tube 5, hot recycling tower reflux pump 6, methanol separator
7, extractor 8, the spray switch valve 11 of methanol, reflux pump 12, BTX aromatics discharge pipe 13, extractive distillation column overhead condenser
14, extractive distillation column 15, extractive distillation column charging/methanol waste water heat exchanger 16, methanol waste water discharge pipe 17, methanol-water rectifying column
18；Hot recycling tower backflash 2, hot recycling tower backflash 2 lower end liquid outlet and hot recycling tower 1 it is provided with in described hot recycling tower 1
Connecting between top and have hot recycling tower reflux pump 6, being connected between outlet side, hot recycling tower 1 top with hot recycling tower backflash 2 has
Hot recycling tower condenser 3；Outlet side, hot recycling tower backflash 2 top is connected, at hot recycling with hydrogen sulfide rich gas condenser 4 import
Being provided with the switch valve 11 of spray methanol between tower reflux pump 6 and hydrogen sulfide rich gas condenser 4, hydrogen sulfide rich gas condenser 4 goes out
Mouth has methanol separator 7 with being connected between extractor 8, and described methanol separator 7 is provided with hydrogen sulfide rich gas outlet tube 5, described
Extractor 8 is provided with mixing chamber 9 and extraction cell 10, and described extraction cell 10 is provided with BTX aromatics discharge pipe 13, extraction cell 10 first
Alcohol water discharging opening is connected to extractive distillation column 15 top by reflux pump 12, connects between extractive distillation column 15 and extractor mixing chamber
Being connected to extractive distillation column overhead condenser 14, being connected between reflux pump 12 with extractive distillation column 15 charging aperture has extractive distillation column to enter
Material/methanol waste water heat exchanger 16, extractive distillation column 15 discharging opening is connected with methanol-water rectifying column 18 charging aperture by pump, methanol-water
Rectifying column 18 discharging opening is connected with extractive distillation column charging/methanol waste water heat exchanger 16, and described extractive distillation column charging/methanol gives up
Water-to-water heat exchanger 16 is provided with methanol waste water discharge pipe 17.
Described a kind of device preventing ammonia in rectisol system, organic sulfur accumulation also abatement apparatus carbon crystalline ammonium,
Solution pump it is provided with between mixing chamber 9 and extraction cell 10.
Described a kind of device preventing ammonia in rectisol system, organic sulfur accumulation also abatement apparatus carbon crystalline ammonium,
Solution pump it is provided with between extractive distillation column 15 and methanol-water rectifying column 18.
Operation principle of the present utility model is as follows:
Hot recycling tower 1 tower top methanol steam and H2S rich gas enter hot recycling tower condenser 3, are entered after circulating water
Hot recycling tower backflash 2；In hot recycling tower backflash 2, methanol returns hot recycling column overhead, big portion by hot recycling tower reflux pump 6
Divide organic sulfur to be condensed and enter hot recycling tower backflash 2；It is cold that hydrogen sulfide rich gas and a small amount of methanol steam enter hydrogen sulfide rich gas
Condenser 4, after being proposed the cooling of-50 DEG C of tail gas by low-temp methanol gas washing, temperature reaches about-15 DEG C, is condensed by methanol steam further,
Organic sulfur steam is condensed simultaneously；Using a small amount of hot recycling tower backflow as the spray methanol of hydrogen sulfide rich gas condenser 4, by sulfur
Changing the ammonia in hydrogen rich gas to absorb, and separate in methanol separator 7, hydrogen sulfide rich gas goes out battery limit (BL) after reclaiming cooling；Separating methanol
The rich ammonia richness organic sulfur methanol that device 7 separates delivers to extractor 8, and methanol is miscible with water, and BTX aromatics dissolves each other with organic sulfur, by close
Spending different gravity settling separation, battery limit (BL) sent by BTX aromatics and organic sulfur, and methanol-water part flows back into as extractive distillation column 15
Enter tower top, major part after the heating of extractive distillation column charging/methanol waste water heat exchanger 16 as extractive distillation column 15 feed into
Enter in tower；The methanol-water removing BTX aromatics and organic sulfur at the bottom of extractive distillation column 15 tower enters methanol-water rectifying column 18, methanol-water
Rectifying column 18 tower top methanol steam returns to hot recycling tower 1 as stripping vapor, and methanol waste water at the bottom of methanol-water rectifying column 18 tower passes through
Extractive distillation column charging/methanol waste water heat exchanger 16 goes out battery limit (BL) after reclaiming heat.
Compared with prior art this utility model has the advantages that.
1, with a small amount of hot recycling tower backflow rich in organic sulfur as the spray methanol of hydrogen sulfide rich gas condenser, separate
After send extraction and extractive distillation column reclaim.I.e. solve the accumulative of system ammonia and organic sulfur by minimum quantity of methyl alcohol, again will not be right
Prewashing Mathanol regenerating system causes excessive burden, solves equipment carbon crystalline ammonium problem simultaneously.
2, extractive distillation column overhead condensation liquid entrance extractor carries out BTX aromatics and separating methanol, i.e. increases extraction essence
Evaporating the BTX aromatics produced quantity of tower, methanol-water is as the backflow of extractive distillation column simultaneously, improves rectification operating mode, is more conducive to mixing
Aromatic hydrocarbons and separating methanol.
Accompanying drawing explanation
Fig. 1 is that one prevents the accumulation of ammonia in rectisol system, organic sulfur abatement apparatus carbon crystalline ammonium apparatus structure
Schematic diagram.
In figure, labelling is as follows: 1 hot recycling tower, 2 hot recycling tower backflashes, 3 hot recycling tower condensers, 4 hydrogen sulfide rich gases are cold
Condenser, 5 hydrogen sulfide rich gas outlet tubes, 6 hot recycling tower reflux pumps, 7 methanol separators, 8 extractors, the switch of 11 spray methanol
Valve, 12 reflux pumps, 13 BTX aromatics discharge pipes, 14 extractive distillation column overhead condensers, 15 extractive distillation columns, 16 extractive distillation columns
Charging/methanol waste water heat exchanger, 17 methanol waste water discharge pipes, 18 methanol-water rectifying columns.
Detailed description of the invention
Below in conjunction with specific embodiment, the utility model is described in further detail.
Embodiment 1
Example below combines accompanying drawing, and the utility model will be further described.
A kind of prevent ammonia in rectisol system, organic sulfur accumulation and the device of abatement apparatus carbon crystalline ammonium: it includes
Hot recycling tower 1, hot recycling tower backflash 2, hot recycling tower condenser 3, hydrogen sulfide rich gas condenser 4, hydrogen sulfide rich gas outlet tube
5, hot recycling tower reflux pump 6, methanol separator 7, extractor 8, the spray switch valve 11 of methanol, reflux pump 12, BTX aromatics is arranged
Go out pipe 13, extractive distillation column overhead condenser 14, extractive distillation column 15, extractive distillation column charging/methanol waste water heat exchanger 16, first
Alcohol wastewater discharge pipe 17, methanol-water rectifying column 18；Being provided with hot recycling tower backflash 2 in described hot recycling tower 1, hot recycling tower returns
Be connected between chute 2 lower end liquid outlet and hot recycling tower 1 top and have hot recycling tower reflux pump 6, outlet side, hot recycling tower 1 top with
Connect between hot recycling tower backflash 2 and have hot recycling tower condenser 3；Outlet side, hot recycling tower backflash 2 top is rich with hydrogen sulfide
Gas condenser 4 import connects, and is provided with opening of spray methanol between hot recycling tower reflux pump 6 and hydrogen sulfide rich gas condenser 4
Closing valve 11, hydrogen sulfide rich gas condenser 4 exports to be connected between extractor 8 methanol separator 7, and described methanol separator 7 sets
Being equipped with hydrogen sulfide rich gas outlet tube 5, described extractor 8 is provided with mixing chamber 9 and extraction cell 10, and described extraction cell 10 is provided with mixed
Closing aromatic hydrocarbons discharge pipe 13, extraction cell 10 methanol-water discharging opening is connected to extractive distillation column 15 top, extraction essence by reflux pump 12
Evaporating to be connected between tower 15 with extractor mixing chamber and have extractive distillation column overhead condenser 14, reflux pump 12 enters with extractive distillation column 15
Connecting between material mouth and have extractive distillation column charging/methanol waste water heat exchanger 16, extractive distillation column 15 discharging opening passes through pump and methanol
Water rectifying column 18 charging aperture connects, and methanol-water rectifying column 18 discharging opening is with extractive distillation column charging/methanol waste water heat exchanger 16 even
Connecing, described extractive distillation column charging/methanol waste water heat exchanger 16 is provided with methanol waste water discharge pipe 17.
Described a kind of device preventing ammonia in rectisol system, organic sulfur accumulation also abatement apparatus carbon crystalline ammonium,
Solution pump it is provided with between mixing chamber 9 and extraction cell 10.
Described a kind of device preventing ammonia in rectisol system, organic sulfur accumulation also abatement apparatus carbon crystalline ammonium,
Solution pump it is provided with between extractive distillation column 15 and methanol-water rectifying column 18.
Hot recycling tower 1 tower top methanol steam and H2S rich gas enter hot recycling tower condenser 3, are entered after circulating water
Hot recycling tower backflash 2；In hot recycling tower backflash 2, methanol returns hot recycling column overhead, big portion by hot recycling tower reflux pump 6
Divide organic sulfur to be condensed and enter hot recycling tower backflash 2；It is cold that hydrogen sulfide rich gas and a small amount of methanol steam enter hydrogen sulfide rich gas
Condenser 4, after being proposed the cooling of-50 DEG C of tail gas by low-temp methanol gas washing, temperature reaches about-15 DEG C, is condensed by methanol steam further,
Organic sulfur steam is condensed simultaneously；Using a small amount of hot recycling tower backflow as the spray methanol of hydrogen sulfide rich gas condenser 4, by sulfur
Changing the ammonia in hydrogen rich gas to absorb, and separate in methanol separator 7, hydrogen sulfide rich gas goes out battery limit (BL) after reclaiming cooling；Separating methanol
The rich ammonia richness organic sulfur methanol that device 7 separates delivers to extractor 8, and methanol is miscible with water, and BTX aromatics dissolves each other with organic sulfur, by close
Spending different gravity settling separation, battery limit (BL) sent by BTX aromatics and organic sulfur, and methanol-water part flows back into as extractive distillation column 15
Enter tower top, major part after the heating of extractive distillation column charging/methanol waste water heat exchanger 16 as extractive distillation column 15 feed into
Enter in tower；The methanol-water removing BTX aromatics and organic sulfur at the bottom of extractive distillation column 15 tower enters methanol-water rectifying column 18, methanol-water
Rectifying column 18 tower top methanol steam returns to hot recycling tower 1 as stripping vapor, and methanol waste water at the bottom of methanol-water rectifying column 18 tower passes through
Extractive distillation column charging/methanol waste water heat exchanger 16 goes out battery limit (BL) after reclaiming heat.
This utility model can be summarized with other the concrete form without prejudice to spirit or essential characteristics of the present utility model.
Therefore, no matter from the point of view of which point, the embodiment above of the present utility model all can only be considered explanation of the present utility model
And utility model can not be limited, claims indicate scope of the present utility model, and this reality is not pointed out in above-mentioned explanation
By novel scope, therefore, any change in the implication suitable with claims of the present utility model and scope, all answer
It is considered to be included within the scope of the claims.
Claims (3)
1. preventing the accumulation of ammonia in rectisol system, organic sulfur a device for abatement apparatus carbon crystalline ammonium, its feature exists
In, it include hot recycling tower (1), hot recycling tower backflash (2), hot recycling tower condenser (3), hydrogen sulfide rich gas condenser (4),
Hydrogen sulfide rich gas outlet tube (5), hot recycling tower reflux pump (6), methanol separator (7), extractor (8), the switch of spray methanol
Valve (11), reflux pump (12), BTX aromatics discharge pipe (13), extractive distillation column overhead condenser (14), extractive distillation column (15),
Extractive distillation column charging/methanol waste water heat exchanger (16), methanol waste water discharge pipe (17), methanol-water rectifying column (18)；Described heat
It is provided with in regenerator (1) on hot recycling tower backflash (2), hot recycling tower backflash (2) lower end liquid outlet and hot recycling tower (1)
Connect between portion and have hot recycling tower reflux pump (6), connect between hot recycling tower (1) outlet side, top and hot recycling tower backflash (2)
It is connected to hot recycling tower condenser (3)；Hot recycling tower backflash (2) outlet side, top is with hydrogen sulfide rich gas condenser (4) import even
Connect, between hot recycling tower reflux pump (6) and hydrogen sulfide rich gas condenser (4), be provided with the switch valve (11) of spray methanol, sulfur
Changing hydrogen rich gas condenser (4) outlet and have methanol separator (7) with being connected between extractor (8), described methanol separator (7) is arranged
Hydrogen sulfide rich gas outlet tube (5), described extractor (8) is had to be provided with mixing chamber (9) and extraction cell (10), described extraction cell (10)
Being provided with BTX aromatics discharge pipe (13), extraction cell (10) methanol-water discharging opening is connected to extractive distillation column by reflux pump (12)
(15) top, is connected between extractive distillation column (15) and extractor mixing chamber and has extractive distillation column overhead condenser (14), backflow
It is connected between pump (12) with extractive distillation column (15) charging aperture and has extractive distillation column charging/methanol waste water heat exchanger (16), extraction
Rectifying column (15) discharging opening is connected with methanol-water rectifying column (18) charging aperture by pump, methanol-water rectifying column (18) discharging opening and extraction
Taking rectifying column charging/methanol waste water heat exchanger (16) to connect, described extractive distillation column charging/methanol waste water heat exchanger (16) is arranged
There is methanol waste water discharge pipe (17).
One the most according to claim 1 prevents the accumulation of ammonia in rectisol system, organic sulfur abatement apparatus carbon ammonium
The device of crystallization, it is characterised in that be provided with solution pump between mixing chamber (9) and extraction cell (10).
One the most according to claim 1 prevents the accumulation of ammonia in rectisol system, organic sulfur abatement apparatus carbon ammonium
The device of crystallization, it is characterised in that be provided with solution pump between extractive distillation column (15) and methanol-water rectifying column (18).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620702188.9U CN205874328U (en) | 2016-07-06 | 2016-07-06 | Device for preventing crystallization of equipment carbon ammonium is eliminated to in low temperature methanol washing system ammonia, organic sulfur accumulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620702188.9U CN205874328U (en) | 2016-07-06 | 2016-07-06 | Device for preventing crystallization of equipment carbon ammonium is eliminated to in low temperature methanol washing system ammonia, organic sulfur accumulation |
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| Publication Number | Publication Date |
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| CN205874328U true CN205874328U (en) | 2017-01-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110734358A (en) * | 2018-07-18 | 2020-01-31 | 中国石油化工股份有限公司 | Flash evaporation adsorption purification process for waste methanol |
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2016
- 2016-07-06 CN CN201620702188.9U patent/CN205874328U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110734358A (en) * | 2018-07-18 | 2020-01-31 | 中国石油化工股份有限公司 | Flash evaporation adsorption purification process for waste methanol |
| CN110734358B (en) * | 2018-07-18 | 2022-12-27 | 中国石油化工股份有限公司 | Flash evaporation adsorption purification process of waste methanol |
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