CN207163276U - N2O processing and waste-heat recovery device in a kind of adipic acid tail gas - Google Patents
N2O processing and waste-heat recovery device in a kind of adipic acid tail gas Download PDFInfo
- Publication number
- CN207163276U CN207163276U CN201720972398.4U CN201720972398U CN207163276U CN 207163276 U CN207163276 U CN 207163276U CN 201720972398 U CN201720972398 U CN 201720972398U CN 207163276 U CN207163276 U CN 207163276U
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- China
- Prior art keywords
- waste
- heat recovery
- adipic acid
- recovery device
- tail gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
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- Processing Of Solid Wastes (AREA)
Abstract
It the utility model is related to N in a kind of adipic acid tail gas2O processing and waste-heat recovery device, belong to air contaminant treatment field.Used device includes gas liquid separation surge tank, gas mixer, heat exchanger, electric heater, decomposition reactor and waste-heat recovery device.N in adipic acid tail gas is handled using the present apparatus2O, N2O is directly decomposed into N2And O2, conversion ratio is more than 99%, and does not produce other nitrogen oxides, therefore N can be greatly reduced2O discharges pollution on the environment, and waste heat is used for byproduct steam or generating, saves the energy, has broad application prospects.
Description
Technical field
The utility model is N in a kind of adipic acid tail gas2O processing and waste-heat recovery device, belong to air contaminant treatment neck
Domain, N in being produced more particularly, to a kind of adipic acid factory2O vent gas treatments and waste-heat recovery device.
Background technology
N2The structure that O can not only damage the ozone layer, while be also a kind of greenhouse gases that can make global warming, currently
Main greenhouse gas in air has CH4、CO2、N2O etc., wherein N2O is a kind of colorless and odorless, the stable gas of chemical property,
It makes the potential of Global Warming be CO2310 times, N2O is being increased with annual 0.2 ~ 0.3% speed, and it often increases in an atmosphere
One times, global temperatures will be caused to raise 0.3 DEG C, while exist be up to 120 years as long as in an atmosphere.In industrial process
In, the especially N containing higher concentration in the exhaust emissions of adipic acid factory and nitric plant2O；Simultaneously vehicle exhaust discharge and
The coal-burning facilities such as fluid bed are also N2One of O main sources.
Therefore the utility model in adipic acid factory device emission primarily directed to containing N2The processing of O tail gas, it is proposed that
N can be directly catalytically decomposed in one kind2O and the device of waste heat recovery.
The content of the invention
The utility model provides a kind of for N in adipic acid tail gas2O processing and waste-heat recovery device, make N in tail gas2O
Directly it is decomposed into N2And O2, N2O reaction conversion ratios are more than 99%, and do not produce other NOx gases, realize heat of reaction recovery profit
With.
The device includes the gas liquid separation surge tank being sequentially connected in series（1）, gas mixer（2）, cryogenic heat exchanger（3）, it is high
Warm heat exchanger（4）, electric heater（5）, decomposition reactor（6）, wherein decomposition reactor（6）Outlet and high-temperature heat-exchanging（4）
Connection, described device also include waste-heat recovery device（7）, the waste-heat recovery device（7）Entrance and high-temperature heat-exchanging（4）Even
Connect, outlet and cryogenic heat exchanger（3）Connection.
The gas liquid separation surge tank（1）For separating moisture content and constant compression air draught in compressed air.
The gas mixer（2）Carried out for mixing adipic acid tail gas and compressed air by quantitative proportioning, control mixing
The N of gas2O concentration.
The decomposition reactor（6）For fixed bed reactors, for by N2O is decomposed into N2And O2。
The waste-heat recovery device（7）For reclaiming heat energy, byproduct steam or for generating electricity.
In the utility model actual application, the N in adipic acid factory tail gas2O content is 30~55v%, and temperature is
Normal temperature, the MPa of pressure 0.16~0.2, by separating the aqueous water removed in tail gas.Compressed air is introduced by air compressor machine, through transformation
Mixed afterwards with compressed air, by adjusting compressed air combined amount, control N2O concentration is between 10~14v%.Mixed gas passes through
Reach 420~500 DEG C after crossing pre-heating temperature elevation, into N2O cartalytic decomposition effect devices.Under catalyst action, N2O is respectively N2With
O2, reaction temperature is increased to 650~780 DEG C.High-temperature tail gas is exchanged heat with unstripped gas, and temperature is returned after being reduced to 300~480 DEG C
Receive waste heat.By heat recovery, vapours being pressed through in by-product or electricity generation grid-connecting uses, exhaust temperature is down to less than 80 DEG C,
Introduce chimney high altitude discharge.
The utility model beneficial effect is：
（1）N will be contained2O is tail gas catalyzed to be decomposed into N2And O2, harmless treatment, reduce greenhouse gas emission.
（2）Energy regenerating is utilized, steam can be produced or for generating electricity.
（3）Energy-conserving and environment-protective, unstripped gas are preheated using tail gas, ensure that during device normal operation external heat need not be introduced.
（4）Compact-sized, small investment, operating cost is low.
Brief description of the drawings
Fig. 1 be the utility model proposes be used for adipic acid tail gas in N2O processing and the schematic diagram of waste-heat recovery device.1-
Gas liquid separation surge tank；2- gas mixers；3- cryogenic heat exchangers；4- high-temperature heat-exchangings；5- electric heaters；6- decomposition reactions
Device；7- waste-heat recovery devices.
Specific implementation method
It is used for N in adipic acid tail gas to provided by the utility model with specific embodiment below in conjunction with the accompanying drawings2O processing and it is remaining
Heat reclamation device illustrates.
As illustrated, the utility model is used for N in adipic acid tail gas2The device of O processing and waste heat recovery includes setting successively
The gas liquid separation surge tank put（1）, gas mixer（2）, cryogenic heat exchanger（3）, high-temperature heat-exchanging（4）, electric heater（5）、
Decomposition reactor（6）, waste-heat recovery device（7）, wherein equipment is connected by pipeline, and carries out type selecting according to unit capacity.
Embodiment 1
Plant area's compressed air is through gas liquid separation surge tank（1）After liquid, with the tail gas from adipic acid plant（N2O volumes
Concentration about 30~38%）In gas mixer（2）In mixed, N2O concentration dilutions are to 11.5v%, through cryogenic heat exchanger（3）With
Waste-heat recovery device（7）Exit gas heat exchange, through high-temperature heat-exchanging（4）With decomposition reactor（6）Exit gas exchanges heat, temperature
Rise to 460 DEG C.Tail gas after preheating enters decomposition reactor（6）, N2O is directly decomposed into N2And O2, while heat is released, decompose
Reactor（6）Outlet Gas Temperature will rise to about 720 DEG C.Exit gas enters high-temperature heat-exchanging（4）Returned after heat exchange into waste heat
Receiving apparatus（7）Carry out waste heat recovery, byproduct steam or for generating electricity, waste-heat recovery device（7）Exit gas changed into low temperature
Hot device（3）Exchanged heat with live gas, be cooled to about 70 DEG C, delivered to chimney emptying, empty N in tail gas2O concentration is
Below 1000ppm.When going into operation, using electric heater（5）Unstripped gas is preheated, during normal operation, electric heater is closed mode.
Claims (5)
- A kind of 1. N in adipic acid tail gas2O processing and waste-heat recovery device, it is characterised in that：Described device includes what is be sequentially connected in series Gas liquid separation surge tank（1）, gas mixer（2）, cryogenic heat exchanger（3）, high-temperature heat-exchanging（4）, electric heater（5）, decompose Reactor（6）, wherein decomposition reactor（6）Outlet and high-temperature heat-exchanging（4）Connection, described device also include waste heat recovery and filled Put（7）, the waste-heat recovery device（7）Entrance and high-temperature heat-exchanging（4）Connection, outlet and cryogenic heat exchanger（3）Connection.
- 2. N in a kind of adipic acid tail gas according to claim 12O processing and waste-heat recovery device, it is characterised in that：It is described Gas liquid separation surge tank（1）For separating moisture content and constant compression air draught in compressed air.
- 3. N in a kind of adipic acid tail gas according to claim 12O processing and waste-heat recovery device, it is characterised in that：It is described Gas mixer（2）By quantitative proportioning, control the N of mixed gas for mixing adipic acid tail gas and compressed air2O is dense Degree.
- 4. N in a kind of adipic acid tail gas according to claim 12O processing and waste-heat recovery device, it is characterised in that：It is described Decomposition reactor（6）For fixed bed reactors, for by N2O is decomposed into N2And O2。
- 5. N in a kind of adipic acid tail gas according to claim 12O processing and waste-heat recovery device, it is characterised in that：It is described Waste-heat recovery device（7）For reclaiming heat energy, byproduct steam or for generating electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720972398.4U CN207163276U (en) | 2017-08-04 | 2017-08-04 | N2O processing and waste-heat recovery device in a kind of adipic acid tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720972398.4U CN207163276U (en) | 2017-08-04 | 2017-08-04 | N2O processing and waste-heat recovery device in a kind of adipic acid tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207163276U true CN207163276U (en) | 2018-03-30 |
Family
ID=61715292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720972398.4U Active CN207163276U (en) | 2017-08-04 | 2017-08-04 | N2O processing and waste-heat recovery device in a kind of adipic acid tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207163276U (en) |
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2017
- 2017-08-04 CN CN201720972398.4U patent/CN207163276U/en active Active
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