CN105797542A - Intensive washing process for industrial exhaust gas - Google Patents
Intensive washing process for industrial exhaust gas Download PDFInfo
- Publication number
- CN105797542A CN105797542A CN201610342471.XA CN201610342471A CN105797542A CN 105797542 A CN105797542 A CN 105797542A CN 201610342471 A CN201610342471 A CN 201610342471A CN 105797542 A CN105797542 A CN 105797542A
- Authority
- CN
- China
- Prior art keywords
- equipment
- exhaust gas
- absorbing medium
- intensive washing
- industrial exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1406—Multiple stage absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/406—Ammonia
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides an intensive washing process for industrial exhaust gas and relates to the technical field of industrial exhaust gas intensive washing.The intensive washing process is characterized in that a U-shaped pipe is arranged between equipment (5) and equipment (6), a U-shaped pipe is arranged between the equipment (6) and equipment (7), a U-shaped pipe is arranged between the equipment (7) and equipment (8), and the requirements for the liquid level of an absorbing medium of the equipment are guaranteed.The absorbing medium sequentially passes through the equipment (5), the equipment (6), the equipment (7) and the equipment (8) through potential difference from an absorbing medium inlet and is finally drained from an absorbing medium outlet (4).Steam ammonia in the exhaust gas is recycled four times, the recycling rate of steam ammonia in the urea production process exhaust gas is increased, consumption in the production process is reduced, emissions of the harmful industrial exhaust gas are reduced, the equipment is designed horizontally, the four sets of equipment are stacked in place, and installation is convenient.
Description
Technical field
The present invention relates to industrial tail gas fine purifiation technical field, be specifically related to a kind of industrial tail gas cleaning.
Background technology
In urea production, tail gas emptying after adopting once washing absorption process to reclaim the vapour ammonia in tail gas, recovering effect is poor, causes production to consume big, pollutant atmosphere.
Summary of the invention
It is an object of the invention to provide a kind of industrial tail gas fine purifiation technique, it is reclaimed for four times by what one group of equipment realized vapour ammonia in tail gas, improves the response rate of vapour ammonia in urea production process tail gas.
In order to solve the problem existing for background technology, the present invention is by the following technical solutions: industrial tail gas passes sequentially through 5,/6/,7/8 4 equipment, carries out being fully contacted with the absorbing medium in equipment and reaches the absorption of vapour ammonia in tail gas, and final tail gas enters air.In absorption process, the absorbing medium in 5/,6/7 3 equipment keeps certain liquid level by U-tube.The heat produced in absorption process is removed by the logical supercooled water of the heat exchanger tube in equipment.Equipment in technique is pressure vessel, and 5/,6/7 3 device structures are identical.
The method have the advantages that
1, the consumption of production process is reduced；
2, the discharge of noxious industry tail gas is reduced；
3, the response rate of vapour ammonia in urea production process tail gas is improved.
Accompanying drawing illustrates:
Fig. 1 is the flow chart of the present invention.
Detailed description of the invention:
With reference to Fig. 1, industrial tail gas passes sequentially through equipment 5, equipment 6, equipment 7, equipment 8 from inlet exhaust gas 1, finally discharges from offgas outlet 2.It is provided with U-tube between equipment 5 and equipment 6, is provided with U-tube between equipment 6 and equipment 7, between equipment 7 and equipment 8, is provided with U-tube, it is ensured that the requirement of equipment absorbing medium liquid level.Absorbing medium passes sequentially through equipment 8, equipment 7, equipment 6, equipment 5 from absorbing medium import 3 by potential difference, finally exports 4 discharges from absorbing medium.Equipment is horizontal design, and four equipment stack in place, it is simple to install.
Claims (1)
1. an industrial tail gas fine purifiation technique, it is characterized in that, it comprises cleaning equipment (5), cleaning equipment (6), cleaning equipment (7) and cleaning equipment (8), equipment (8) is connected by U-tube with equipment (7), equipment (7) is connected by U-tube with equipment (6), equipment (6) is connected by U-tube with equipment (5), equipment is horizontal design, and four equipment stack in place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610342471.XA CN105797542A (en) | 2016-05-23 | 2016-05-23 | Intensive washing process for industrial exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610342471.XA CN105797542A (en) | 2016-05-23 | 2016-05-23 | Intensive washing process for industrial exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105797542A true CN105797542A (en) | 2016-07-27 |
Family
ID=56451698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610342471.XA Pending CN105797542A (en) | 2016-05-23 | 2016-05-23 | Intensive washing process for industrial exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105797542A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874259A (en) * | 2015-06-06 | 2015-09-02 | 安徽瀚洋节能科技有限公司 | Industrial exhaust gas finish washing process |
-
2016
- 2016-05-23 CN CN201610342471.XA patent/CN105797542A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874259A (en) * | 2015-06-06 | 2015-09-02 | 安徽瀚洋节能科技有限公司 | Industrial exhaust gas finish washing process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160727 |
|
| WD01 | Invention patent application deemed withdrawn after publication |