CN207941381U - A kind of packed tower tail gas absorbing system of double section liquid phase feedings - Google Patents
A kind of packed tower tail gas absorbing system of double section liquid phase feedings Download PDFInfo
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- CN207941381U CN207941381U CN201820044884.4U CN201820044884U CN207941381U CN 207941381 U CN207941381 U CN 207941381U CN 201820044884 U CN201820044884 U CN 201820044884U CN 207941381 U CN207941381 U CN 207941381U
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Abstract
The utility model is related to a kind of packed tower tail gas absorbing systems of double section liquid phase feedings, belong to low-temp methanol and wash technical field.A kind of packed tower tail gas absorbing system of double section liquid phase feedings, including tail gas washing tower, two sections structured packing is equipped in the tail gas washing tower, liquid distribution trough is equipped with above every section of structured packing, the washing tail gas top of tower is connected with emptying end gas pipeline, the tail gas washing tower lower part is connected with waste pipe, the washing tail gas tower bottom is equipped with into tower exhaust pipe, the tail gas washing tower is equipped with desalted water pipeline and waterpipe containing methanol technics, waterpipe containing methanol technics is connect with methanol-water separating, desalted water pipeline is located at the top of the waterpipe containing methanol technics.The utility model is compared with prior art, better methanol washing effect can be reached under identical desalination water consumption, that is, the content for going out methanol in tower tail gas is lower, the washing precision higher of tail gas washing tower, the content for going out methanol in tower tail gas is lower, and environment protecting is more excellent.
Description
Technical field
The utility model is related to a kind of packed tower tail gas absorbing systems of double section liquid phase feedings, belong to low-temp methanol and wash technology
Field.
Background technology
It is washed in technical field in low-temp methanol, tail gas absorption is generally sub-thread liquid feedstock, the related procedure of the prior art
It is as follows：Tail gas enters tail gas washing tower by bottom of tower, enters washing tail gas by tower top after desalted water and the mixing of waste water containing methanol technics
Tower, to wash the methanol entered in tail gas washing tower.Bottom of tower wastewater containing methanol is retracted to methanol moisture by washing tail gas water pump
Methanol is recycled from tower, tower top tail gas sends out battery limit (BL) by pipeline.
There are following technical problems for traditional sub-thread liquid feedstock tail gas absorption technology：The main mesh of tail gas washing tower is set
Be absorb tail gas in methanol, use methanol content in the tail gas of tail gas washing tower and meet environmental requirement.Since gas-liquid is flat
The limitation of weighing apparatus goes out methanol content in tail gas washing tower tail gas and is limited by methanol content in the mixing, washing liquid.Traditional tail gas is inhaled
It receives in technological process configuration and enters back into tail gas washing tower after water containing methanol technics and desalted water mixing, contain due to containing methanol technics water
There is a certain amount of methanol, the desalted water for being zero to methanol content is a kind of " pollution ".Due to《Petro chemical industry pollutant emission
Standard》The publication of GB31571-2015, the standard require the content of methanol in emission to be not more than 50mg/m3（The standard is sent out
Methanol content requires to be not more than 190mg/m in emission before cloth3）, the publication of the standard is to low-temp methanol washing process tail gas
More stringent requirements are proposed for the washing precision of scrubbing tower.
Invention content
The purpose of this utility model is to provide a kind of packed tower tail gas absorbing systems of double section liquid phase feedings, existing to solve
There is technology to go out the problem that methanol content is high in the tail gas of tail gas washing tower.
The technical scheme adopted by the utility model is that：A kind of packed tower tail gas absorbing system of double section liquid phase feedings, including
Tail gas washing tower, the tail gas washing tower is interior to be equipped with filler, and the washing tail gas top of tower is connected with emptying end gas pipeline, described
Washing tail gas tower bottom is connected with waste pipe, and the tail gas washing tower lower part is equipped with and enters tower exhaust pipe, and the tail gas is washed
It washs tower epimere and is equipped with desalted water pipeline and waterpipe containing methanol technics, waterpipe containing methanol technics is connect with methanol-water separating,
Desalted water pipeline is located at the top of the waterpipe containing methanol technics.
Preferably, the waste pipe is equipped with washing tail gas water pump, and the end of the waste pipe is passed through methanol moisture
From tower.
Preferably, the filler is structured packing.
Preferably, the filler is divided into two sections, and is equipped with liquid distribution trough above every section of filler.
Preferably, the desalted water pipeline is connected in tail gas washing tower above epimere filler.
Preferably, the waterpipe containing methanol technics is connected in tail gas washing tower above hypomere filler.
Preferably, it is described enter tower exhaust pipe be connected in tail gas washing tower below hypomere filler.
The utility model has the beneficial effects that：Desalted water does not mix with water containing methanol technics and individually enters tail gas washing tower tower
Top, due to not having methanol in desalted water, i.e. the equilibrium partial pressure of methanol is 0, advantageously ensures that the washing precision of methanol in tail gas, is taken off
Brine pipeline is located at the top of the waterpipe containing methanol technics, can avoid causing the methanol back-mixing in liquid phase, ensure that detergent
Degree and efficiency.Water containing methanol technics enters above tail gas washing tower hypomere filler in tower, in this way according to the methanol content of itself
Technological process configuration the characteristics of taking full advantage of two strands of cleaning solutions itself, ensure that the washing of methanol in tail gas to greatest extent
Effect.Being equipped with liquid distribution trough above every section of filler can make cleaning solution uniformly react with tail gas, improve washing
Effect.The utility model compared with prior art, can reach better methanol washing effect under identical desalination water consumption,
Be methanol in tower tail gas content it is lower, the washing precision higher of tail gas washing tower, the content for going out methanol in tower tail gas is lower,
Environment protecting is more excellent.
Description of the drawings
Fig. 1 is a kind of sectional view of embodiment of the utility model；
In figure, 1- tail gas washing towers；2- washing tail gas water pumps；3- enters tower exhaust pipe；4- desalted water pipelines；5- contains methanol
Technique waterpipe；6- waste pipes；7- emptying end gas pipelines；8- fillers；9- liquid distribution troughs.
Specific implementation mode
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, a kind of packed tower tail gas absorbing system of double section liquid phase feedings of the present embodiment, including washing tail gas
Tower 1, the tail gas washing tower 1 is interior to be equipped with filler 8, and 1 top of the tail gas washing tower is connected with emptying end gas pipeline 7, the tail
1 bottom of gas wash tower is connected with waste pipe 6, and 1 lower part of the tail gas washing tower is equipped with and enters tower exhaust pipe 3, the tail gas
1 epimere of scrubbing tower is equipped with desalted water pipeline 4 and waterpipe containing methanol technics 5, waterpipe containing methanol technics 5 and methanol-water separating
Connection, desalted water pipeline 4 are located at the top of waterpipe containing methanol technics 5.The waste pipe 6 is equipped with washing tail gas water pump 2,
The end of the waste pipe 6 is passed through methanol-water separating.The filler 8 is structured packing.It is upper and lower two that the filler 8, which is divided to,
Section, and it is equipped with liquid distribution trough 9 above every section of filler.The desalted water pipeline 4 is connected to epimere filler in tail gas washing tower 1
8 tops.The waterpipe containing methanol technics 5 is connected to tail gas washing tower（1）8 top of interior hypomere filler.It is described enter tower offgas duct
Road 3 is connected to 8 lower section of hypomere filler in tail gas washing tower 1.
A kind of operation of specific example of the utility model is as follows：
From upstream H2The exhaust flow of S concentration towers is 37000 Nm3/ h, pressure are 0.15MPa or so, and temperature is 18 DEG C,
Mole group becomes H2:0.066%, N2：14.701%, CO：0.4158%, AR:0.002713%, CH4：0.002719%, CO2：
84.802%, H2S：0.000365%, CH30H：0.009443%, which enters tail gas washing tower by bottom of tower.The tail gas is washed
It washs and is equipped with two sections structured packing in tower, epimere packed height 2000mm, hypomere packed height 5000mm are de- from battery limit (BL)
Brine flow is 2200 Kg/h, and pressure 0.14MPa, temperature is 30 DEG C, and the desalted water is by the liquid above the filler of upper end point
Cloth device enters in tail gas washing tower, and the water flow containing methanol technics from methanol-water separating is 2000Kg/h, pressure 0.2
MPa, temperature are 30 DEG C, and quality group becomes：CH30H：0.1%, H2O：99.9%, the stock waste water containing methanol technics is from hypomere filler
The liquid distribution trough of side enters in tail gas washing tower.It is 39ppm to go out methanol content in tower tail gas after tail gas washing tower washs.Together
Under conditions of sample, enters tail gas washing tower washing methods from tower top using after two strands of cleaning solutions mixing of the prior art, wash
After to go out in tower tail gas methanol content be 43ppm, compare to go out methanol content in tower tail gas after two methods washing and can be seen that double sections
The washing effect of the tail gas absorbing system of liquid phase feeding is more preferable, and the environmental protection index reached is more excellent.
The basic principles and main features and advantage of the utility model have been shown and described above.The ordinary skill of this field
Personnel are not it should be appreciated that above-described embodiment limits the scope of protection of the utility model, all use equivalent replacements etc. in any form
The technical solution that mode is obtained, falls in the scope of protection of the utility model.
The parts not involved in the utility model is the same as those in the prior art or can be realized by using the prior art.
Claims (7)
1. a kind of packed tower tail gas absorbing system of double section liquid phase feedings, including tail gas washing tower（1）, the tail gas washing tower
（1）It is interior to be equipped with filler（8）, the tail gas washing tower（1）Top is connected with emptying end gas pipeline（7）, the tail gas washing tower（1）
Bottom is connected with waste pipe（6）, the tail gas washing tower（1）Lower part is equipped with and enters tower exhaust pipe（3）, it is characterised in that：
The tail gas washing tower（1）Epimere is equipped with desalted water pipeline（4）With waterpipe containing methanol technics（5）, waterpipe containing methanol technics
（5）It is connect with methanol-water separating, desalted water pipeline（4）Positioned at waterpipe containing methanol technics（5）Top.
2. a kind of packed tower tail gas absorbing system of double section liquid phase feedings according to claim 1, it is characterised in that：It is described
Waste pipe（6）It is equipped with washing tail gas water pump（2）, the waste pipe（6）End be passed through methanol-water separating.
3. a kind of packed tower tail gas absorbing system of double section liquid phase feedings according to claim 1, it is characterised in that：It is described
Filler（8）For structured packing.
4. a kind of packed tower tail gas absorbing system of double section liquid phase feedings according to claim 1 or 2 or 3, feature exist
In：The filler（8）It is divided into two sections, and liquid distribution trough is equipped with above every section of filler（9）.
5. a kind of packed tower tail gas absorbing system of double section liquid phase feedings according to claim 4, it is characterised in that：It is described
Desalted water pipeline（4）It is connected to tail gas washing tower（1）Interior epimere filler（8）Top.
6. a kind of packed tower tail gas absorbing system of double section liquid phase feedings according to claim 4, it is characterised in that：It is described
Waterpipe containing methanol technics（5）It is connected to tail gas washing tower（1）Interior hypomere filler（8）Top.
7. a kind of packed tower tail gas absorbing system of double section liquid phase feedings according to claim 4, it is characterised in that：It is described
Enter tower exhaust pipe（3）It is connected to tail gas washing tower（1）Interior hypomere filler（8）Lower section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820044884.4U CN207941381U (en) | 2018-01-11 | 2018-01-11 | A kind of packed tower tail gas absorbing system of double section liquid phase feedings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820044884.4U CN207941381U (en) | 2018-01-11 | 2018-01-11 | A kind of packed tower tail gas absorbing system of double section liquid phase feedings |
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| CN207941381U true CN207941381U (en) | 2018-10-09 |
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| CN201820044884.4U Active CN207941381U (en) | 2018-01-11 | 2018-01-11 | A kind of packed tower tail gas absorbing system of double section liquid phase feedings |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112058021A (en) * | 2020-08-11 | 2020-12-11 | 陕西大秦环境科技有限公司 | Low-temperature methanol washing tail gas VOCs treatment method and device |
| CN113046137A (en) * | 2021-03-12 | 2021-06-29 | 蒲城清洁能源化工有限责任公司 | Method for capturing and extracting ammonia in low-temperature methanol washing system |
| CN113457379A (en) * | 2020-03-30 | 2021-10-01 | 中石油吉林化工工程有限公司 | Method for reducing organic matter content in methyl methacrylate vacuum pump tail gas |
-
2018
- 2018-01-11 CN CN201820044884.4U patent/CN207941381U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457379A (en) * | 2020-03-30 | 2021-10-01 | 中石油吉林化工工程有限公司 | Method for reducing organic matter content in methyl methacrylate vacuum pump tail gas |
| CN112058021A (en) * | 2020-08-11 | 2020-12-11 | 陕西大秦环境科技有限公司 | Low-temperature methanol washing tail gas VOCs treatment method and device |
| CN113046137A (en) * | 2021-03-12 | 2021-06-29 | 蒲城清洁能源化工有限责任公司 | Method for capturing and extracting ammonia in low-temperature methanol washing system |
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