CN212417489U - High-efficient reaction tail gas absorbing device - Google Patents
High-efficient reaction tail gas absorbing device Download PDFInfo
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- CN212417489U CN212417489U CN202020828383.2U CN202020828383U CN212417489U CN 212417489 U CN212417489 U CN 212417489U CN 202020828383 U CN202020828383 U CN 202020828383U CN 212417489 U CN212417489 U CN 212417489U
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Abstract
The utility model discloses a high-efficiency reaction tail gas absorption device, which comprises an absorption tower, wherein the bottom of the absorption tower is provided with an absorption tank, the absorption tank is provided with an aeration device such as an aeration pipe, the aeration device is communicated with the gas outlet of a tail gas exhaust pipeline, the aeration pipeline is provided with a multilayer annular structure, each layer of annular structure is provided with aeration holes, and the two layers of annular structures are communicated with each other through a communication pipeline; the bottom of the absorption tank is communicated with a spray pipe through a circulating pipeline and is provided with a circulating pump, the spray pipe is provided with a plurality of spray heads, and the spray heads are spiral nozzles; the utility model has the advantages that: the absorption efficiency is improved, and the cost is reduced.
Description
Technical Field
The utility model relates to a tail gas absorbing device, specifically speaking are high-efficient reaction tail gas (ammonia) absorbing device belongs to the tail gas absorbing device field.
Background
During the drilling process, due to the action of the pressure difference, the water in the drilling fluid is inevitably lost to the stratum through the well wall, so that the drilling fluid loses water. As water enters the formation, clay particles in the drilling fluid adhere to the wellbore wall to form a "filter cake," forming a filter cake wellbore. As the well wall of the filter cake is much denser than the original well wall, the filter cake prevents the drilling fluid from further losing water on one hand and plays a role in protecting the well wall on the other hand. However, in the process of forming a filter cake well wall, the filtered water content is too much, the filter cake is too thick, and fine clay particles enter the stratum along with the water content, so that normal drilling is affected and the stratum is damaged. The loss of drilling fluid and the formation of filter cake the loss of drilling fluid is inevitable during drilling and filter cake can be formed by the loss of fluid to protect the well wall. The fluid loss additive is a chemical agent capable of reducing the fluid loss of the drilling fluid, and is a water-soluble high-molecular compound mostly. Tail gas (ammonia gas) is usually generated in the production process of the fluid loss additive, an absorption tower is usually adopted for spraying and absorbing the tail gas (ammonia gas), and the traditional absorption tower has low absorption efficiency and high cost.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model designs a high-efficient reaction tail gas absorbing device has improved absorption efficiency, the cost is reduced.
The technical scheme of the utility model is that:
a high-efficiency reaction tail gas absorption device comprises an absorption tower, wherein an absorption tank is arranged at the bottom of the absorption tower, an aeration device such as an aeration pipe is arranged in the absorption tank, the aeration device is communicated with a gas outlet of a tail gas exhaust pipeline, the aeration pipeline is provided with a multi-layer annular structure, each layer of annular structure is provided with an aeration hole, and two connected layers of annular structures are communicated through a communication pipeline, so that tail gas can be uniformly distributed, the absorption efficiency of ammonia gas in the tail gas is improved by adopting an aeration mode, the absorption effect is good, and the absorption rate of the ammonia gas can reach more than 90%; the bottom of the absorption tank is communicated with a spray pipe through a circulating pipeline and is provided with a circulating pump, and the spray pipe is provided with a plurality of spray heads for further spraying and absorbing the rising tail gas, so that the absorption efficiency is improved; the spray head is a spiral nozzle, so that the absorption liquid is in a water mist shape when being sprayed, the contact area of the absorption liquid and tail gas is increased, and the absorption effect on ammonia gas is improved.
Further, the top of absorption tower is equipped with the gas vent, the gas vent is equipped with ammonia concentration detector for whether contain the ammonia in detecting the combustion gas, the gas vent is linked together with exhaust duct, and is equipped with the air discharge valve, exhaust duct still is linked together with exhaust branch, exhaust branch with tail gas exhaust duct is linked together to be equipped with the return air valve, when ammonia concentration detector detected containing the ammonia in the combustion gas, open the return air valve, close the air discharge valve, make gas return again and carry out the secondary absorption in the tail gas exhaust duct, when ammonia concentration detector detected not have the ammonia in the combustion gas, close the return air valve, open the air discharge valve, with gas outgoing, simple structure, the cost is reduced.
Further, the absorption tank is equipped with leakage fluid dram and moisturizing mouth to be equipped with aqueous ammonia concentration detector, be used for detecting the concentration of aqueous ammonia, when aqueous ammonia concentration was too high, open leakage fluid dram discharge absorption liquid, and supply the absorption liquid through the moisturizing mouth, the leakage fluid dram sets up the bottom of absorption tank, the moisturizing mouth sets up the top of absorption tank is favorable to saturated aqueous ammonia to discharge.
Further, the top of absorption cell is equipped with the packing layer, the packing layer is equipped with the foaming polypropylene layer, adopts the foaming polypropylene more to be favorable to the absorption of ammonia, and it is effectual to absorb, the foaming polypropylene layer is equipped with a plurality of ventilative micropores, and the gas of being convenient for passes through, and waste gas is dissolved once more in the absorption liquid and is returned the bottom of absorption cell in the packing layer and spray liquid contact when upwards flowing, has further improved ammonia absorption efficiency.
Furthermore, a gas collecting hood is further arranged below the spray head and is conical, a plurality of vent holes are formed in the surface of the gas collecting hood, a baffle is horizontally arranged above each vent hole, an annular channel is formed between the bottom edge of the gas collecting hood and the inner side wall of the absorption tower, spraying liquid can fall conveniently, the flowing direction of gas can be changed through the gas collecting hood, and absorption of ammonia in the gas is facilitated.
Furthermore, the absorption liquid in the absorption tank is saturated saline solution or water, and the absorption efficiency of the saturated saline solution is higher.
Furthermore, be equipped with temperature sensor and heating device in the absorption cell, like electric heater, temperature sensor's output links to each other with the input control of controller, the output of controller with heating device control links to each other for control heating temperature heats the water in the absorption cell through heating device, thereby reaches best ammonia absorption temperature, about 20 ℃, has further improved the absorption effect.
Further, still be equipped with water-cooling circulating line in the absorption tank, water-cooling circulating line is linked together through water-cooling circulating pump and cold water storage cistern, the output of controller with water-cooling circulating pump control links to each other, when the temperature is too high, starts the water-cooling circulating pump through the temperature controller, reduces the temperature in the absorption tank, avoids the high temperature and influences the absorption of ammonia.
During operation, the tail gas that contains the ammonia among the tail gas exhaust duct gets into the absorption tower bottom, carries out the ammonia absorption under absorption tank aeration equipment's effect, and later gaseous rising sprays through the shower nozzle at the in-process that rises, fully absorbs once more at the in-process that sprays through packing, later collects gas through the gas collecting channel to spray by spraying liquid and absorb. At the gas vent, when the ammonia concentration detector detected that to contain the ammonia in the combustion gas, open the return air valve, close the exhaust valve, make gas return to the tail gas exhaust duct again and carry out the secondary absorption, when the ammonia concentration detector detected that not have the ammonia in the combustion gas, closed the return air valve, opened the exhaust valve, with gaseous exhaust.
The utility model has the advantages that: along with the generation of ammonia gas in the production process of the filtrate reducer, the ammonia gas is absorbed by water by using the device, so that the gas emission is ensured to meet the standard requirement, the absorption efficiency is improved, and the cost is reduced.
The present invention will be further explained with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of a high-efficiency reaction tail gas absorption device according to an embodiment of the present invention.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is not intended to limit the invention.
Example 1
As shown in fig. 1, a high-efficiency reaction tail gas absorption device comprises an absorption tower 1, wherein an absorption tank 2 is arranged at the bottom of the absorption tower 1, an aeration device 3 such as an aeration pipe is arranged in the absorption tank 2, the aeration device 3 is communicated with a gas outlet of a tail gas exhaust pipeline 4, the aeration pipeline 3 is provided with a plurality of layers of annular structures, each layer of annular structure is provided with an aeration hole, and two connected layers of annular structures are communicated through a communication pipeline, so that tail gas can be uniformly distributed, the absorption efficiency of ammonia gas in the tail gas is improved by adopting an aeration mode, the absorption effect is good, and the absorption rate of the ammonia gas can reach more than 90%; the bottom of the absorption tank 2 is communicated with a spray pipe 5 through a circulating pipeline, and is provided with a circulating pump 12, the spray pipe is provided with a plurality of spray heads, and the spray heads are arranged above the packing layer to further spray and absorb the rising tail gas, so that the absorption efficiency is improved; the spray head is a spiral nozzle, so that the absorption liquid is in a water mist shape when being sprayed, the contact area of the absorption liquid and tail gas is increased, and the absorption effect on ammonia gas is improved.
The top of absorption tower 1 is equipped with gas vent 6, gas vent 6 is equipped with ammonia concentration detector for whether contain the ammonia in detecting the combustion gas, gas vent 6 is linked together with exhaust duct 7 to be equipped with the exhaust valve, exhaust duct 7 still is linked together with exhaust branch 8, exhaust branch 8 with tail gas exhaust duct 4 is linked together to be equipped with the return air valve, when ammonia concentration detector detects and contains the ammonia in the combustion gas, open the return air valve, close the exhaust valve, make gas carry out the secondary absorption in returning to the tail gas exhaust duct again, when ammonia concentration detector detects not have the ammonia in the combustion gas, close the return air valve, open the exhaust valve, with gaseous exhaust, simple structure, the cost is reduced.
The top of absorption cell 2 is equipped with packing layer 9, packing layer 9 is equipped with the foaming polypropylene layer, adopts the foaming polypropylene more to be favorable to the absorption of ammonia, and it is effectual to absorb, the foaming polypropylene layer is equipped with a plurality of ventilative micropores, and the gas of being convenient for passes through, and waste gas is dissolved once more in the absorption liquid and is returned the bottom of absorption cell in the packing layer and the contact of liquid that sprays when upwards flowing, has further improved ammonia absorption efficiency.
The gas collecting hood 10 is further arranged below the spray head, the gas collecting hood 10 is conical, a plurality of vent holes are formed in the surface of the gas collecting hood, a baffle 11 is horizontally arranged above each vent hole, an annular channel is formed between the edge of the bottom of the gas collecting hood and the inner side wall of the absorption tower, spraying liquid can fall down conveniently, the flowing direction of gas can be changed through the gas collecting hood, and absorption of ammonia in the gas is facilitated.
The absorption liquid in the absorption tank is saturated salt solution or water, and the absorption efficiency of the saturated salt solution is higher.
Be equipped with temperature sensor and heating device in the absorption cell, like electric heater, temperature sensor's output links to each other with the input control of controller, the output of controller with heating device control links to each other for control heating temperature heats the water in the absorption cell through heating device, thereby reaches best ammonia absorption temperature, about 20 ℃, has further improved the absorption effect.
Still be equipped with water-cooling circulating line in the absorption tank, water-cooling circulating line is linked together through water-cooling circulating pump and cold water storage cistern, the output of controller with water-cooling circulating pump control links to each other, when the temperature is too high, starts the water-cooling circulating pump through the temperature controller, reduces the temperature in the absorption tank, avoids the high temperature and influences the absorption of ammonia.
Claims (7)
1. The utility model provides a high-efficient reaction tail gas absorbing device which characterized in that: the device comprises an absorption tower, wherein an absorption tank is arranged at the bottom of the absorption tower, an aeration device is arranged in the absorption tank, the aeration device is communicated with an air outlet of a tail gas exhaust pipeline, the aeration pipeline is provided with a plurality of layers of annular structures, each layer of annular structure is provided with an aeration hole, and the two connected layers of annular structures are communicated through a communication pipeline; the bottom of the absorption tank is communicated with a spray pipe through a circulating pipeline, and is provided with a circulating pump, the spray pipe is provided with a plurality of spray heads, and the spray heads are spiral nozzles.
2. The efficient reaction tail gas absorption device according to claim 1, wherein: the top of absorption tower is equipped with the gas vent, the gas vent is equipped with ammonia concentration detector for whether contain the ammonia in the detection combustion gas, the gas vent is linked together with exhaust duct to be equipped with the exhaust valve, exhaust duct still is linked together with exhaust branch, exhaust branch with tail gas exhaust duct is linked together to be equipped with the return air valve.
3. The efficient reaction tail gas absorption device according to claim 2, wherein: the absorption tank is provided with a liquid outlet and a water replenishing port, and is also provided with an ammonia water concentration detector for detecting the concentration of ammonia water.
4. The efficient reaction tail gas absorption device according to claim 3, wherein: and a packing layer is arranged above the absorption tank, and the packing layer is provided with a foamed polypropylene layer.
5. The efficient reaction tail gas absorption device according to claim 4, wherein: the gas collecting hood is also arranged below the spray head and is conical, a plurality of vent holes are formed in the surface of the gas collecting hood, a baffle is horizontally arranged above each vent hole, and an annular channel is formed between the bottom edge of the gas collecting hood and the inner side wall of the absorption tower.
6. The efficient reaction tail gas absorption device according to claim 5, wherein: the absorption tank is internally provided with a temperature sensor and a heating device, the output end of the temperature sensor is connected with the input end of the controller in a control way, and the output end of the controller is connected with the heating device in a control way.
7. The efficient reaction tail gas absorption device according to claim 6, wherein: still be equipped with water-cooling circulating line in the absorption tank, water-cooling circulating line is linked together through water-cooling circulating pump and cold water storage cistern, the output of controller with water-cooling circulating pump control links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020828383.2U CN212417489U (en) | 2020-05-18 | 2020-05-18 | High-efficient reaction tail gas absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020828383.2U CN212417489U (en) | 2020-05-18 | 2020-05-18 | High-efficient reaction tail gas absorbing device |
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| Publication Number | Publication Date |
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| CN212417489U true CN212417489U (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020828383.2U Active CN212417489U (en) | 2020-05-18 | 2020-05-18 | High-efficient reaction tail gas absorbing device |
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| CN (1) | CN212417489U (en) |
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2020
- 2020-05-18 CN CN202020828383.2U patent/CN212417489U/en active Active
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