CN103435068B - A kind of gas treatment gasifying device ammonia-containing gas and liquid also reclaim the method for ammonia - Google Patents
A kind of gas treatment gasifying device ammonia-containing gas and liquid also reclaim the method for ammonia Download PDFInfo
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- CN103435068B CN103435068B CN201310395625.8A CN201310395625A CN103435068B CN 103435068 B CN103435068 B CN 103435068B CN 201310395625 A CN201310395625 A CN 201310395625A CN 103435068 B CN103435068 B CN 103435068B
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Abstract
The present invention provides a kind of gas treatment gasifying device ammonia-containing gas and liquid and reclaims the method for ammonia, coal (refinery coke, heavy oil, pyrolysis fuel oil etc., hereinafter referred to as coal) gasification and follow up device can produce ammonia-containing gas and containing ammonia liquid, ammonia-containing gas temperature is made to be 20��160 DEG C, enter top in stripping tower, making to enter in the middle part of stripping tower containing ammonia liquid heat exchange to 100��210 DEG C, top of tower adds de-salted water or other is not containing the process water of ammonia, and water temp is 10��100 DEG C; Stripping tail gas is discharged from tower top, and temperature is 20��100 DEG C, and pressure is 0.1��1.8MPa; Making lateral line withdrawal function ammonia temperature be 100��210 DEG C, pressure is 0.1��1.8MPa; Making the ammonia of lateral line withdrawal function be 30��100 DEG C in temperature, reclaim ammonia or ammoniacal liquor when pressure is 0.1��1.5MPa after condensation separatory, lime set returns to stripping tower bottom; Making stripping tower bottom discharge temperature of purifying waste water is 120��210 DEG C. The invention solves the operation problem of coal gasification apparatus ammonium salt crystallization, discharged nitrous oxides excessive problem and downstream biochemical treatment ammonia nitrogen excessive problem.
Description
Technical field
The present invention relates to a kind of process coal (refinery coke, heavy oil, pyrolysis fuel oil etc., hereinafter referred to as coal) gasification installation ammonia-containing gas and liquid and reclaim the method for ammonia, containing ammonia, water, carbonic acid gas, hydrogen sulfide, carbonylsulfide, hydrogen, carbon monoxide and thin grey ammonia-containing gas and contain ammonia liquid by stripping process in particular to a kind of, and reclaim the method for ammonia.
Background technology
Coal gasification apparatus mainly comprises the workshop sections such as gasification, conversion, purification and sulfur recovery. In current coal gasification apparatus, coal circulates in above-mentioned workshop section at the ammonia that gasification produces and accumulates or arrange with ammonia-containing gas with containing outside ammonia liquid, ammonia-containing gas and containing in ammonia liquid containing ammonia, water, carbonic acid gas, hydrogen sulfide, carbonylsulfide, hydrogen, carbon monoxide and carefully ash, lack organized focusing on, recovery ammonia is difficult, ammonia low-temperature zone enrichment in gasification installation is caused to produce ammonium salt crystallization on the one hand, blocking, etching apparatus and pipeline, problem is brought to the normal operation of device, on the other hand, the outer row of ammonia also brings following disadvantageous effect:
1. after ammonia-containing gas is delivered to sulfur recovery burning or is directly delivered to incinerator burning, ammonia is converted into discharged nitrous oxides in air, the harm of environment is huge, and national regulation is to the emission request of oxynitride also increasingly stringent, in existing atmosphere pollutants emission standards, the amount of nitrogen oxides of sulfur recovery unit emission is required as being no more than 240mg/m3, and require that amount of nitrogen oxides is no more than 100mg/m according in " petroleum refining industry pollutant emission standard " exposure draft of State Administration for Quality Supervision and Inspection and Quarantine of the environment protection portion issue being about to implement3, it is to increase to the environmental requirement of coal gasification apparatus;
2. delivering to downstream containing ammonia liquid and carry out biochemical treatment, but its ammonia-nitrogen content often exceeds standard, biochemical treatment load increase even cannot run.
Up to the present, not yet there is a kind of ammonia method in gas treatment gasifying device effective, economic, environmental protection.
Summary of the invention
Instant invention overcomes shortcoming of the prior art, it provides a kind of process coal (refinery coke, heavy oil, pyrolysis fuel oil etc., hereinafter referred to as coal) gasification installation ammonia-containing gas and liquid also reclaim the method for ammonia. By method provided by the invention, focus on to the ammonia-containing gas in coal gasification apparatus with containing ammonia liquid, reclaim while ammonia, the operation problem of coal gasification apparatus ammonium salt crystallization, discharged nitrous oxides excessive problem and downstream biochemical treatment ammonia nitrogen excessive problem can be solved.
The present invention is achieved by the following technical solutions: a kind of gas treatment gasifying device ammonia-containing gas and liquid also reclaim the method for ammonia, it is characterized in that making ammonia-containing gas temperature be 20��160 DEG C, enter top in stripping tower, make to enter in the middle part of stripping tower containing ammonia liquid heat exchange to 100��210 DEG C, stripper top adds de-salted water or other is not containing the process water of ammonia, and water temp is 10��100 DEG C; Stripping tail gas is discharged from stripping tower top, and temperature is 20��100 DEG C, and pressure is 0.1��1.8MPa; Making lateral line withdrawal function ammonia temperature be 100��210 DEG C, pressure is 0.1��1.8Mpa; Making the ammonia of lateral line withdrawal function be 30��100 DEG C in temperature, reclaim ammonia or ammoniacal liquor when pressure is 0.1��1.5Mpa after condensation separatory, lime set returns to stripping tower bottom; Making stripping tower bottom discharge temperature of purifying waste water is 120��210 DEG C.
Described de-salted water or other process water weight not containing ammonia are 0.05��4:1 with the ratio containing ammonia liquid, ammonia-containing gas weight sum, and described ammonia-containing gas is 0��3:1 with containing ammonia liquid weight ratio.
Compared with prior art, the invention has the beneficial effects as follows:
1, ammonia after stripping tower lateral line withdrawal function by organized for ammonia centralized recovery, ammonia recovery is more than 95%, while obtaining economic benefit, the ammonia semi-invariant in gasification installation reduces, and solves ammonium salt crystallization problem and downstream biochemical treatment ammonia-nitrogen content excessive problem in coal gasification apparatus.
2, stripping tail gas ammonia content is low, reduces the amount of nitrogen oxides of final outer row, it is to increase the environment friendly of coal gasification apparatus.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of the present invention.
In figure: containing ammonia liquid 1, ammonia-containing gas 2, de-salted water or other is containing ammonia process water 3, stripping tower 4, stripping tail gas 5, purify waste water 6, side line water cooler 7, water cooler 8 of purifying waste water, lateral line withdrawal function ammonia 9, one-level fractional condensation tank 10, fractional condensation water cooler 11, two-stage fractional condensation tank 12, ammonia 13.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Ammonia-containing gas 2 temperature is 20��160 DEG C, enter top in stripping tower 4, entering in the middle part of stripping tower 4 containing ammonia liquid 1 through side line water cooler 7 and water cooler 8 heat exchange to 100��210 DEG C of purifying waste water, stripping tower 4 top adds de-salted water or other is not containing ammonia process water 3, and water temp is 10��100 DEG C; Stripping tail gas 5 is discharged from stripping tower 4 top, and temperature is 20��100 DEG C, and pressure is 0.1��1.8MPa; Lateral line withdrawal function ammonia 9 temperature is made to be 100��210 DEG C, pressure is 0.1��1.8MPa, making the ammonia 13 that lateral line withdrawal function ammonia 9 obtains concentration after side line water cooler 7, one-level fractional condensation tank 10, fractional condensation water cooler 11 and two-stage fractional condensation tank 12 cool fractional condensation and is greater than 95%, lime set 14 returns to stripping tower 4 bottom;It is 120��210 DEG C that stripping tower bottom discharges 6 temperature of purifying waste water, and returns gasification installation after water cooler 8 heat exchange of purifying waste water. De-salted water or other process water weight not containing ammonia are 0.05��4:1 with the ratio containing ammonia liquid 1, ammonia-containing gas 2 weight sum, and ammonia-containing gas 2 is 0��3:1 with containing ammonia liquid 1 weight ratio.
Claims (1)
1. a gas treatment and follow up device produce ammonia-containing gas and liquid also reclaim the method for ammonia, gasification and follow up device are produced ammonia-containing gas and enter stripping tower containing ammonia liquid, stripping tower top is discharged stripping tail gas and is delivered to sulfur recovery unit, lateral line withdrawal function ammonia in the middle part of stripping tower, ammonia is reclaimed after condensation separatory, purifying waste water after stripping tower bottom discharge stripping, it is characterized in that making ammonia-containing gas temperature be 20��160 DEG C, enter top in stripping tower, make to enter in the middle part of stripping tower containing ammonia liquid heat exchange to 100��210 DEG C, stripper top adds de-salted water or other is not containing the process water of ammonia, water temp is 10��100 DEG C, stripping tail gas is discharged from stripping tower top, temperature is 20��100 DEG C, pressure is 0.1��1.8MPa, making lateral line withdrawal function ammonia temperature be 100��210 DEG C, pressure is 0.1��1.8MPa, making the ammonia of lateral line withdrawal function be 30��100 DEG C in temperature, reclaim ammonia or ammoniacal liquor when pressure is 0.1��1.5MPa after condensation separatory, lime set returns to stripping tower bottom, making stripping tower bottom discharge temperature of purifying waste water is 120��210 DEG C,
Described de-salted water or not containing ammonia other process water weight with containing ammonia liquid, ammonia-containing gas weight sum ratio be 0.05��4:1;
Described ammonia-containing gas is 0��3:1 with containing ammonia liquid weight ratio.
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| CN201310395625.8A CN103435068B (en) | 2013-09-03 | 2013-09-03 | A kind of gas treatment gasifying device ammonia-containing gas and liquid also reclaim the method for ammonia |
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| CN201310395625.8A CN103435068B (en) | 2013-09-03 | 2013-09-03 | A kind of gas treatment gasifying device ammonia-containing gas and liquid also reclaim the method for ammonia |
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| CN103435068B true CN103435068B (en) | 2016-06-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105000745B (en) * | 2015-09-02 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of sulfur Gas Fields produced water treatment system |
| CN107963680B (en) * | 2018-01-05 | 2023-12-26 | 山东众音化学科技有限公司 | High ammonia nitrogen wastewater treatment method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884150A (en) * | 2006-06-23 | 2006-12-27 | 华南理工大学 | Method for treating coal gasification wastewater by single-tower pressurization stripping and device therefor |
| WO2010128257A1 (en) * | 2009-05-06 | 2010-11-11 | Alcion Environnement | Method for recovering and recycling ammonia, and related plant |
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- 2013-09-03 CN CN201310395625.8A patent/CN103435068B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884150A (en) * | 2006-06-23 | 2006-12-27 | 华南理工大学 | Method for treating coal gasification wastewater by single-tower pressurization stripping and device therefor |
| WO2010128257A1 (en) * | 2009-05-06 | 2010-11-11 | Alcion Environnement | Method for recovering and recycling ammonia, and related plant |
Non-Patent Citations (3)
| Title |
|---|
| 80t/hr煤气化废水处理流程改造、控制与运行;冯大春;《中国博士学位论文全文数据库工程科技Ⅰ辑》;20111015;第9页第5-6行，第39页第2-3段，第40页第1段，第40-41页表3-2及表3-3，第42页第2-6行 * |
| 含氨废气吸收塔的工艺设计;薛金全;《精细化工原料及中间体》;20051231(第8期);第10页右栏第19行至第11页左栏第4行，第11页左栏第24行 * |
| 带侧线单塔加压汽提同时脱酸脱氨工艺应用现状;冯大春;《广州化工》;20101231;第38卷(第12期);第227-229页 * |
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