CN206706040U - A kind of ammonia nitrogen removal device based on integral gasification combined circulation technology gas gasification and desulfurization unit - Google Patents
A kind of ammonia nitrogen removal device based on integral gasification combined circulation technology gas gasification and desulfurization unit Download PDFInfo
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- CN206706040U CN206706040U CN201720523949.9U CN201720523949U CN206706040U CN 206706040 U CN206706040 U CN 206706040U CN 201720523949 U CN201720523949 U CN 201720523949U CN 206706040 U CN206706040 U CN 206706040U
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Abstract
The utility model discloses a kind of ammonia nitrogen removal device based on integral gasification combined circulation technology gas gasification and desulfurization unit, the left upper portion of stripper is provided with coal gas lime set import, left lower is provided with low pressure steam inlet, the top nozzle of stripper is connected by pipeline with stripping Gas Cooler upper orifice, the bottom nozzle of stripper is connected by pipeline with stripping the entrance of water pump, and the outlet for stripping water pump connects coal gasification apparatus by pipeline；The lower nozzle of stripping Gas Cooler is connected by pipeline with the left upper portion mouth of pipe of knockout drum；The upper orifice of knockout drum is by gas line containing propylhomoserin with going sulfur recovery unit to be connected, and bottom nozzle returns to pump intake with lime set by pipeline and is connected, and the outlet that lime set returns to pump is connected by pipeline with the right upper portion mouth of pipe of stripper.The beneficial effects of the utility model are：Desulfurizing agent MDEA solution system ammonia nitrogen accumulation amounts are reduced, alleviate coal gasification gas sweetening agent MDEA solution deterioration rates, extend service life.
Description
Technical field
It the utility model is related to integral gasification combined circulation technology (abbreviation IGCC) coal gasification, desulfurization technology technology
Field, more particularly to a kind of ammonia nitrogen removal based on integral gasification combined circulation technology gas gasification and desulfurization unit
Device.
Background technology
In IGCC coal gasifications, desulfuration field, substantial amounts of ammonia component is contained in coal gasification, desulfuration field, coal gasification gas,
After the water system system in coal gasification apparatus, part ammonia nitrogen enters water body, under remainder enters with coal gasification gas
Purifier is swum, absorbs hydrogen sulfide by the condensation of coal gasification gas, the hydrolysis of sulphur carbonoxide, methyl diethanolamine (MDEA) solution,
Coal gas is purified, and the coal gas after purification delivers to down-stream system.But containing a large amount of in water body caused by the condensation of coal gasification gas
Ammonia nitrogen, eventually enter into coal gasification apparatus water body；And coal gasification gas by MDEA solution contact after, part ammonia nitrogen component stays
In MDEA solution, after certain time, MDEA solution deterioration, desulphurizing ability reduces, and has had a strong impact on the safety and stability fortune of device
OK.
Utility model content
The purpose of this utility model is to be directed to technological deficiency present in prior art, and provides one kind and be based on overall coal gas
Change the ammonia nitrogen removal device of combined cycle generation technology gas gasification and desulfurization unit, the ammonia that will contain in IGCC coal gasification coal gas
Nitrogen component is removed and is used using reasonable manner, the final total amount of ammonia reduced in coal gasification apparatus water body.Meanwhile drop
Ammonia nitrogen accumulation amount in the low solution coal gasification gas into MDEA, keep solution desulfurization performance.
Technical scheme is used by realize the purpose of this utility model：
A kind of ammonia nitrogen removal device based on integral gasification combined circulation technology gas gasification and desulfurization unit, bag
Include stripper, stripping Gas Cooler, knockout drum, lime set and return to pump, stripping water pump；
The left upper portion of the stripper is provided with coal gas lime set import, and left lower is provided with low pressure steam inlet, the vapour
The top nozzle of stripper is connected by pipeline with stripping Gas Cooler upper orifice, and the bottom nozzle of stripper passes through pipeline and vapour
The entrance of lift pump is connected, and the outlet of the stripping water pump connects coal gasification apparatus by pipeline；
The lower nozzle of the stripping Gas Cooler is connected by pipeline with the left upper portion mouth of pipe of knockout drum；
The upper orifice of the knockout drum by gas line containing propylhomoserin with going sulfur recovery unit to be connected, bottom
The mouth of pipe returns to pump intake with lime set by pipeline and is connected, and the outlet that the lime set returns to pump passes through on the right side of pipeline and stripper
Portion's mouth of pipe is connected.
Preferably, stripping cooler is cooled down using cooling water.
Preferably, in the stripper it is packed tower, two layers of Pall ring filler bed, Pall ring filler is provided with stripper
The top of bed sets wire mesh demister.
Preferably, the gas line containing propylhomoserin sets pressure-regulating valve.
Preferably, the pipeline of the stripping exit of pump connection is provided with Liquid level adjusting valve.
A kind of ammonia nitrogen removal method based on integral gasification combined circulation technology gas gasification and desulfurization unit：
S1：Gas liquor is by the import of coal gas lime set by the way that into the top of stripper, gas liquor flow is 10-
15t/h, pressure 2.5-3MPa, gas liquor are flowed from top to bottom in stripper, and low-pressure steam is entered by low-pressure steam
Mouth enters stripper bottom, and low-pressure steam flow is 2.5-3.5t/h, pressure 0.35-0.45MPa, and steam flows from bottom to top
Dynamic, lime set contacts in stripper bed with steam and the ammonia component in lime set is stripped off, what stripper bottom treated
Water stripping is delivered to coal gasification apparatus by stripping water pump and recycled；
S2：The stripping gas of stripper top, which enters in stripping Gas Cooler, to be cooled down, and stripper top stripping gas temperature is
130-140 DEG C, temperature is 85-105 DEG C after stripping Gas Cooler cooling；
S3：Enter knockout drum after cooling, the separation of gas-liquid two-phase is realized in knockout drum；Knockout drum point
The sour gas containing ammonia separated out is delivered to the sulfur recovery unit for needing ammonia by gas line containing propylhomoserin；
S4：The lime set that knockout drum is isolated, pump is returned to by lime set and is transmitted back to stripper top, lime set is returned and pumped out
Mouth pressure is 0.5-0.8M.
Preferably, gas line containing propylhomoserin sets pressure-regulating valve in the step S3, and control system pressure is 0.1-
0.4MPa。
Preferably, the gas liquor temperature of coal gas lime set entrance is 50 DEG C, flow 15t/h in the step S1,
Pressure is 2.6MPa.
Preferably, stripping gas is cooled to 90-100 DEG C by the Gas Cooler in the step S2.
Preferably, stripper bottom water stripping discharge pressure is 0.35MPa in the S1, and bottom stripping coolant-temperature gage is 135
DEG C, top stripping gas temperature is 130 DEG C, quantity of steam 3t/h.
Preferably, the pipeline of the stripping exit of pump connection is provided with Liquid level adjusting valve, control stripper liquid level 3-
3.5m。
Compared with prior art, the beneficial effects of the utility model are：
1st, coal gasification gas-condensate liquid is after stripper strips, and the ammonia nitrogen in water body can remove more than 90%, the water
Coal gasification apparatus can be returned to be recycled, eventually reduce total nitrogen content of coal gasification apparatus waste water.
2nd, total amount of ammonia in device gas and water body can be reduced, reduces desulfurizing agent methyl diethanolamine (MDEA) solution system
Ammonia nitrogen accumulation amount, alleviate coal gasification gas sweetening agent MDEA solution deterioration rates, extend service life.
3rd, the ammonia-containing gas being stripped off are delivered to sulfur recovery unit utilization, reduce sulfur recovery unit alkali lye consumption amount.
Brief description of the drawings
Fig. 1 show the structural representation of ammonia nitrogen removal device of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that this place
The specific embodiment of description only to explain the utility model, is not used to limit the utility model.
A kind of ammonia nitrogen removal device based on integral gasification combined circulation technology gas gasification and desulfurization unit, bag
Include stripper 1, stripping Gas Cooler 2, knockout drum 3, lime set and return to pump 4, stripping water pump 5；
The left upper portion of the stripper 1 is provided with coal gas lime set import 11, and left lower is provided with low pressure steam inlet 12, institute
The top nozzle for stating stripper 1 is connected by pipeline with the stripping upper orifice of Gas Cooler 2, the bottom nozzle of stripper 1
It is connected by pipeline with stripping the entrance of water pump 5, the outlet of the stripping water pump 5 connects coal gasification apparatus by pipeline；
The left upper portion gas feed phase that the lower nozzle of the stripping Gas Cooler 2 passes through pipeline and knockout drum 3
Even, stripping cooler is cooled down using cooling water；
The upper orifice of the knockout drum 3 by gas line containing propylhomoserin 31 with going sulfur recovery unit to be connected,
Bottom nozzle returns to pump intake with lime set by pipeline and is connected, and the outlet that the lime set returns to pump 4 passes through pipeline and stripper 1
The right upper portion mouth of pipe is connected.
There is two layers of Pall ring filler bed in the stripper 1, top sets wire mesh demister.
Working method：
Temperature is 50 DEG C, flow 15t/h, and pressure is that 2.6MPa gas liquor enters the top of stripper 1, with stripping
The upflowing vapor of the bottom of tower 1 contacts in bed, and the ammonia component in condensate liquid is stripped out, is delivered to from the top of stripper 1
Gas Cooler 2 is stripped, is cooled to 90-100 DEG C.
The bottom water stripping discharge pressure of stripper 1 is 0.35MPa, and bottom stripping coolant-temperature gage is 135 DEG C, top stripping temperature
Spend for 130 DEG C, quantity of steam 3t/h.
The water stripping of the bottom of stripper 1 is delivered to coal gasification apparatus after pressure rise to 4.0MPa, led to by stripping water pump 5
The liquid level 3-3.5m crossed in the Liquid level adjusting valve control stripper 1 that stripping exit of pump is set.
The condensate liquid of the bottom of knockout drum 3 is delivered to stripper top by lime set pump, and lime set pump discharge sets liquid level
Regulating valve, control divide liquid level of tank 0.7-0.9m.
Pressure-regulating valve is set on gas pipeline containing propylhomoserin 31, and control system pressure is 0.35MPa.
Stripper 1 is packed tower, realizes that gas-liquid fully contacts, and the top of stripper 1 sets wire mesh demister, prevents gas-liquid
Entrainment.
The top ammonia-containing gas of stripper 1 temperature control after stripping Gas Cooler cooling at 90-100 DEG C, prevents ammonium salt
Crystallization influences device stable operation.
Stripper bottom water stripping discharge pressure is 0.35MPa, and coal gas makeup is delivered to by multistage pressure stripping water pump 5
Put, pressure 2.8MPa.
Described above is only preferred embodiment of the present utility model, it is noted that for the general of the art
For logical technical staff, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these change
Enter and retouch and also should be regarded as the scope of protection of the utility model.
Claims (5)
1. a kind of ammonia nitrogen removal device based on integral gasification combined circulation technology gas gasification and desulfurization unit, it is special
Sign is：Pump, stripping water pump are returned including stripper, stripping Gas Cooler, knockout drum, lime set；
The left upper portion of the stripper is provided with coal gas lime set import, and left lower is provided with low pressure steam inlet, the stripper
Top nozzle by pipeline with stripping Gas Cooler upper orifice be connected, the bottom nozzle of stripper passes through pipeline and water stripping
The entrance of pump is connected, and the outlet of the stripping water pump connects coal gasification apparatus by pipeline；
The lower nozzle of the stripping Gas Cooler is connected by pipeline with the left upper portion mouth of pipe of knockout drum；
The upper orifice of the knockout drum by gas line containing propylhomoserin with going sulfur recovery unit to be connected, bottom nozzle
Pump intake is returned to by pipeline with lime set to be connected, the outlet that the lime set returns to pump passes through pipeline and the right upper portion pipe of stripper
Mouth is connected.
2. one kind according to claim 1 is based on integral gasification combined circulation technology gas gasification and desulfurization unit
Ammonia nitrogen removal device, it is characterised in that：The stripping cooler is cooled down using cooling water.
3. one kind according to claim 1 is based on integral gasification combined circulation technology gas gasification and desulfurization unit
Ammonia nitrogen removal device, it is characterised in that：It is packed tower in the stripper, two layers of Pall ring filler bed is provided with stripper
Layer, the top of Pall ring filler bed set wire mesh demister.
4. one kind according to claim 1 is based on integral gasification combined circulation technology gas gasification and desulfurization unit
Ammonia nitrogen removal device, it is characterised in that：The gas line containing propylhomoserin sets pressure-regulating valve.
5. one kind according to claim 1 is based on integral gasification combined circulation technology gas gasification and desulfurization unit
Ammonia nitrogen removal device, it is characterised in that：The pipeline of the stripping exit of pump connection is provided with Liquid level adjusting valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720523949.9U CN206706040U (en) | 2017-05-12 | 2017-05-12 | A kind of ammonia nitrogen removal device based on integral gasification combined circulation technology gas gasification and desulfurization unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720523949.9U CN206706040U (en) | 2017-05-12 | 2017-05-12 | A kind of ammonia nitrogen removal device based on integral gasification combined circulation technology gas gasification and desulfurization unit |
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| CN206706040U true CN206706040U (en) | 2017-12-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129836A (en) * | 2017-05-12 | 2017-09-05 | 华能（天津）煤气化发电有限公司 | A kind of ammonia nitrogen removal apparatus and method based on integral gasification combined circulation technology gas gasification and desulfurization unit |
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2017
- 2017-05-12 CN CN201720523949.9U patent/CN206706040U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129836A (en) * | 2017-05-12 | 2017-09-05 | 华能（天津）煤气化发电有限公司 | A kind of ammonia nitrogen removal apparatus and method based on integral gasification combined circulation technology gas gasification and desulfurization unit |
| CN107129836B (en) * | 2017-05-12 | 2023-11-03 | 华能（天津）煤气化发电有限公司 | Ammonia nitrogen removal device and method based on coal gas gasification and desulfurization unit of integrated gasification combined cycle power generation technology |
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