CN1069686C - Gas washing oil and diesel oil denaphthalene - Google Patents
Gas washing oil and diesel oil denaphthalene Download PDFInfo
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- CN1069686C CN1069686C CN97115776A CN97115776A CN1069686C CN 1069686 C CN1069686 C CN 1069686C CN 97115776 A CN97115776 A CN 97115776A CN 97115776 A CN97115776 A CN 97115776A CN 1069686 C CN1069686 C CN 1069686C
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- naphthalene
- diesel oil
- oil
- coal gas
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Abstract
The present invention relates to a recovery technology for removing naphthalene from coal gas purified washing oil and naphthalene-dissolved saturation diesel oil, which belongs to the field of chemical industry. The present invention is characterized in that cooling liquor cooled by a refrigerating unit is put into the pipe pass of a heat exchanger; then, the saturation diesel oil to remove naphthalene is pumped into the shell pass of the heat exchanger to exchange heat so that naphthalene in the naphthalene-dissolved saturation diesel oil is separated; after a solid-liquid separation in a centrifuge, the diesel oil without naphthalene can be recycled. The present invention has the advantages of simple operation and convenient use, and the device of the technology can be installed near a coal gas spraying tower to synchronously run with the coal gas spraying tower so that the diesel oil is saved and the naphthalene as chemical raw materials is recovered, and therefore, the present invention has obvious economic and social benefits.
Description
The present invention relates to the washing oil of chemical field from gas purification--the recovery technology of taking off naphthalene and naphthalene the saturated diesel oil of molten naphthalene.
Coal gas is that coal produces in coking, owing to contain naphthalene in the coal, naphthalene is along with coal gas is transported to the user by underground pipeline in coking.Coal gas naphthalene in combustion processes can not fully burn, thereby atmosphere and environment are polluted.Coal gas is in the underground pipeline course of conveying in addition, and naphthalene can constantly condense on the duct wall, and life-time service can cause line clogging.Therefore Gas Company will drop into huge person property's power for the mediation gas line every year.Improve gas quality, what adopt at present is washing oil--the method for solar oil spray filters the naphthalene in the coal gas, and annual for this reason diesel oil quantity of using up is surprising.When the dissolved naphthalene reaches capacity in the diesel oil, saturated diesel oil will go out of use, and both waste the energy, cause the pollution of environment again.
Coal gas washing oil of the present invention--diesel oil takes off naphthalene, and purpose is a kind ofly to make the saturated diesel oil of molten naphthalene in the gas purification take off naphthalene to reuse, reclaim the technological method of naphthalene simultaneously for what solve that an above-mentioned difficult problem provides.
Coal gas washing oil of the present invention--diesel oil takes off the naphthalene content Description:
Coal gas washing oil of the present invention--diesel oil takes off naphthalene, it is characterized in that: be with the temperature of cooling fluid glycol-cooled to-5-5 ℃ by a unit cooler; Again cooling fluid ethylene glycol is input to the tube side of interchanger by water pump; One oil pump will wait to take off the shell side that the saturated diesel oil of molten naphthalene in the naphthalene storage tank pumps into interchanger, in interchanger, carry out heat exchange, the temperature of the saturated diesel oil of molten naphthalene is reduced to 5-10 ℃ from 30-35 ℃, make the naphthalene in the diesel oil reduce to 150-170g/kg, through having the 130-170g naphthalene to be separated out in the saturated diesel oil of molten naphthalene that makes every kg after the heat exchange by the 300-320g/kg of state of saturation; The naphthalene of being separated out is the fine particle shape in diesel oil, along with refrigerative diesel oil flows in the storage tank together, go into to carry out solid-liquid separation in the whizzer by valve controlling flow again; The solid-state naphthalene that is separated is collected in the storage naphthalene groove, taking off diesel oil behind the naphthalene flows into and has taken off in the naphthalene storage tank, existing 50% separated the going out of naphthalene becomes molten naphthalene unsaturated solution in the saturated diesel oil of molten naphthalene of this moment, gets back to and reuses the naphthalene of removing in the coal gas in the coal gas spray column.
That the present invention has is simple to operate, easy to use, process unit can be installed near the coal gas spray column, and the characteristics with the synchronous operation of coal gas spray column are arranged.At gas flow is 10000M
3/ H, temperature are that 30 ℃, pressure are 500mmH
2It is 1.22g/M that O, gas entry contain the naphthalene amount
3, the naphthalene amount that contains of gas exit is 0.1g/M after diesel oil takes off naphthalene
3Situation under in this moment molten naphthalene saturated diesel oil solubleness of naphthalene be 300g/kg, take off naphthalene by diesel oil after, when heat exchange temperature is reduced to 10 ℃, will separate out the 130g naphthalene, need 86Kg diesel oil to handle, calculate by this that to handle the coal gas amount every day be 120000M
3The time, can save diesel oil 1032Kg every day, and the naphthalene of recyclable 134.4Kg.Coal gas washing oil of the present invention--diesel oil takes off the naphthalene technology can be saved the surprising diesel oil of quantity and can be recycled to the industrial chemicals naphthalene again, has remarkable economic efficiency and social benefit.
Embodiment:
Fig. 1 is that the coal gas washing oil--diesel oil takes off the naphthalene process flow sheet.
Among Fig. 1,1 is that unit cooler, 2 is that water pump, 3 is that oil pump, 4 is that interchanger, 5 is that storage tank, 6 is that whizzer, 7 is to store up naphthalene groove, 8 to take off naphthalene storage tank, 9 for taking off the naphthalene storage tank for waiting.
Process unit among the present invention is installed in the coal gas essence takes off near the coal gas spray column of naphthalene, with the synchronous operation of coal gas spray column.Coal gas enters from washing naphthalene tower bottom, discharges from cat head, and filler is housed in the tower, and solar oil is discharged from the tower bottom from cat head spray, the saturated diesel oil of molten naphthalene, goes into to wait to take off in the naphthalene storage tank 8.At this moment unit cooler 1 to-5-5 ℃, is input to the tube side of interchanger 4 with the cooling fluid glycol-cooled by water pump 2; Oil pump 3 will wait to take off the shell side that the saturated diesel oil of molten naphthalene in the naphthalene storage tank 8 pumps into interchanger 4, carry out heat exchange in interchanger 4, and the temperature of the saturated diesel oil of molten naphthalene is reduced in 5 ℃ the scope from 35 ℃.Through after the heat exchange, will there be the 170g naphthalene to be separated out in the saturated diesel oil of molten naphthalene of every kg, in diesel oil, be the fine particle shape, along with the saturated diesel oil of the molten naphthalene of refrigerative flow in the storage tank 5 together, go into to carry out solid-liquid separation in the whizzer 6 by valve controlling flow; The solid-state naphthalene that is separated is collected 7 li of storage naphthalene grooves, has taken off diesel oil behind the naphthalene and has then flowed into and taken off in the naphthalene storage tank 9, and existing 50% separated the going out of the diesel oil institute dissolved naphthalene of this moment become molten naphthalene unsaturated solution, returns the coal gas spray column and reuses.
Claims (1)
1. gas washing oil and diesel oil denaphthalene method is characterized in that: a unit cooler is with the temperature of cooling fluid glycol-cooled to-5-5 ℃; Again cooling fluid ethylene glycol is input to the tube side of interchanger by water pump; One oil pump will wait to take off the shell side that the saturated diesel oil of molten naphthalene in the naphthalene storage tank pumps into interchanger, in interchanger, carry out heat exchange, the temperature of the saturated diesel oil of molten naphthalene is reduced to 5-10 ℃ from 30-35 ℃, make the naphthalene in the diesel oil reduce to 150-170g/kg, through having the 130-170g naphthalene to be separated out in the saturated diesel oil of molten naphthalene that makes every kg after the heat exchange by the 300-320g/kg of state of saturation; The naphthalene of being separated out is the fine particle shape in diesel oil, along with refrigerative diesel oil flows in the storage tank together, go into to carry out solid-liquid separation in the whizzer by valve controlling flow again; The solid-state naphthalene that is separated is collected in the storage naphthalene groove, taking off diesel oil behind the naphthalene flows into and has taken off in the naphthalene storage tank, existing 50% separated the going out of naphthalene becomes molten naphthalene unsaturated solution in the saturated diesel oil of molten naphthalene of this moment, gets back to and reuses the naphthalene of removing in the coal gas in the coal gas spray column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97115776A CN1069686C (en) | 1997-09-11 | 1997-09-11 | Gas washing oil and diesel oil denaphthalene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97115776A CN1069686C (en) | 1997-09-11 | 1997-09-11 | Gas washing oil and diesel oil denaphthalene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1178825A CN1178825A (en) | 1998-04-15 |
| CN1069686C true CN1069686C (en) | 2001-08-15 |
Family
ID=5173437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97115776A Expired - Fee Related CN1069686C (en) | 1997-09-11 | 1997-09-11 | Gas washing oil and diesel oil denaphthalene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1069686C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100342171C (en) * | 2002-03-27 | 2007-10-10 | 三菱丽阳株式会社 | Method of preventing solid adhesion |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104762109B (en) * | 2015-04-10 | 2018-05-01 | 陕西煤业化工集团神木天元化工有限公司 | It is pyrolyzed the group technology and device of the dedusting of coal gas and the delayed coking of mink cell focus |
| CN105396431A (en) * | 2015-12-29 | 2016-03-16 | 宝舜科技股份有限公司 | Anthracene oil hydrogenation apparatus PSA hydrogen production unit with desorbed gas naphthalene scrubber |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030602A (en) * | 1988-06-04 | 1989-01-25 | 河南省安阳钢铁公司 | Purify the technology of naphthalene in the coke-oven gas |
-
1997
- 1997-09-11 CN CN97115776A patent/CN1069686C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030602A (en) * | 1988-06-04 | 1989-01-25 | 河南省安阳钢铁公司 | Purify the technology of naphthalene in the coke-oven gas |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100342171C (en) * | 2002-03-27 | 2007-10-10 | 三菱丽阳株式会社 | Method of preventing solid adhesion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1178825A (en) | 1998-04-15 |
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