CN215388690U - Device system for preventing amine from escaping in carbon dioxide amine method trapping process - Google Patents
Device system for preventing amine from escaping in carbon dioxide amine method trapping process Download PDFInfo
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Abstract
The utility model provides a device system for preventing amine from escaping in a carbon dioxide amine capturing process, which comprises an absorption tower system, an amine liquid system and an analysis tower system which are sequentially connected; and the upper part of the absorption tower system is provided with a tube bundle liquid drop removing device. The device has a simple system structure, and is easy to operate, regulate and control; the liquid drop removing device for the tube bundle is used for removing the liquid drops containing the amine carried in the air flow discharged by the absorption tower, so that the environmental pollution and the great loss of the amine liquid are prevented, the removing efficiency of the liquid drops containing the amine in the air flow is high, and the economic benefit and the environmental benefit are good.
Description
Technical Field
The utility model relates to the technical field of energy conservation and environmental protection, in particular to a device system for preventing amine from escaping in a carbon dioxide amine method trapping process.
Background
Combustion of fossil fuels results in atmospheric CO2The content is increased rapidly, and then greenhouse effect is generated, and the survival of human beings is influenced. The CCUS (Carbon Capture, Utilization and Storage Carbon Capture, Utilization and sequestration) is an essential technical direction for Carbon reduction, and the CCUS is also an important way for realizing deep emission reduction of fossil energy.
At present, the carbon dioxide capture technology is mainly used in thermal power plants, cement, steel, chemical industry and other industries which emit much carbon dioxide. The carbon dioxide capture technology mainly comprises a chemical absorption method, a physical membrane separation method and an adsorption method. Compared with a physical membrane separation method and an adsorption method, the chemical absorption method has mature technology and high capture purity which reaches about 97-99 percent, and the chemical amine method is mostly adopted for capturing carbon dioxide industrially.
However, the flue gas discharged in the process of capturing carbon dioxide by the chemical amine absorption method can carry amine liquid drops, and the amine escape condition occurs. When the amine liquid drops are discharged into the environment, aerosol can be generated, so that the environment pollution is caused, and meanwhile, a large amount of amine liquid is also lost.
In order to solve the problem of removing liquid drops in the gas flow after the reaction of the flue gas and the solution, expert scholars have developed research. CN209771401U discloses condensation dust removal defogging device for desulfurizing tower, the device include polymer condenser, vane type defroster, condenser water collecting opening, defroster water collecting opening, collection water pipe, desulfurization effluent treatment plant, polymer condenser connects gradually with vane type defroster and forms integrated device, vane type defroster contains vane centrifugation dust removal module and liquid drop discharge hole. The device carries out cooling condensation and degree of depth dust removal defogging to wet flue gas and handles, has the effectual, compact, the space advantage of economizing on land of water conservation space of water conservation. However, the device needs to be coupled with a high-molecular condenser, so that the energy consumption is increased to a certain extent, the treatment cost is increased, and the device is not suitable for large-scale popularization and use.
CN111841272A discloses an ammonia process of economizing on water and energy of stopping ammonia escape aerosol's super clean discharge system and technology of desulfurization, including thick liquid disturbance system, cooling concentration crystallization system, oxysulfide absorption system, ammonia capture system, washing clean system, crystallization particle increase system, the circulating spray liquid of desulfurizing tower from the bottom up adopts the solution of different compositions, and concentration gradient subtracts progressively, has effectively improved desulfurization efficiency, has stopped aerosol, ammonia escape, has eliminated ammonia process desulfurization flue gas and has trailing the tenesmus phenomenon. Through different technical combinations such as multistage whirl coupling, filler, defroster, high-efficient whirl water film deduster and silk screen demister, optimization, the extension flue gas dwell reaction time of flue gas distribution situation in the realization tower have promoted the further coalescence of slight particulate matter, the entrapment of thick liquid droplet, through external cooling tower low temperature washing liquid washing flue gas, realize that fine particulate matter is desorption in coordination, realize the ultra-clean emission. However, the system is complex in composition, circulating spray liquid needs to be adjusted in time according to the actual smoke situation, and the operation regulation and control difficulty is high.
CN106178775A discloses a dedusting and demisting unit of a low-resistance-cyclone coupling dedusting and demisting device and a method thereof, wherein the device comprises a plurality of dedusting and demisting units, each unit at least comprises a hollow cylinder body for flue gas to pass through, at least two conventional centrifugal cyclone plate modules and at least two tubular pre-demisting modules fixed on the hollow cylinder body. Saturated wet flue gas with liquid drops and fine particles enters from the bottom of the central cylinder after desulfurization, and a part of large liquid drops and smoke dust particles in the flue gas are effectively blocked and removed through the tubular pre-demisting module at the cost of small pressure loss. When the flue gas continues to pass through the second-level conventional centrifugal cyclone plate module, the flue gas is rapidly rotated, and under the action of centrifugal force, large liquid drops and particles remaining in the flue gas are removed due to different inertia differences and rotation speeds between the liquid drops and the fine particles, so that the effects of efficiently removing dust and mist are achieved. However, the dust and mist removing unit has poor effect of removing the tiny droplets and particles, and aerosol still occurs to cause environmental pollution.
Therefore, the development of a device system which has low treatment cost, simple operation and regulation and high efficiency of removing micro liquid drops in the gas flow and is used for preventing the amine from escaping in the carbon dioxide amine method trapping process is of great significance.
SUMMERY OF THE UTILITY MODEL
In view of the problems in the prior art, the utility model provides a device system for preventing amine from escaping in a carbon dioxide amine capturing process, wherein the device system treats an air flow after reacting with an amine-poor liquid in an absorption tower through a tube bundle liquid drop removing device, removes amine-containing liquid drops carried in the air flow, and can reduce the loss of the amine liquid and reduce the pollution to the environment caused by the amine-containing liquid drops entering the atmosphere.
In order to achieve the purpose, the utility model adopts the following technical scheme:
in a first aspect, the utility model provides a device system for preventing amine from escaping in a carbon dioxide amine method trapping process, which comprises an absorption tower system, an amine liquid system and an analysis tower system which are sequentially connected; and the upper part of the absorption tower system is provided with a tube bundle liquid drop removing device.
The device system for preventing amine from escaping in the carbon dioxide amine capturing process enables airflow at the outlet of the absorption tower to flow through the tube bundle, improves the flow velocity of the airflow, and performs high-speed centrifugal motion in the device for removing liquid drops from the tube bundle, thereby realizing the high-efficiency separation of the liquid drops containing the amine carried in the airflow.
Preferably, the absorber system comprises an absorber.
Preferably, the absorption tower becomes smaller in inner diameter from the tube bundle droplet removing device to the top.
According to the utility model, the inner diameter of the absorption tower from the pipe bundle liquid drop removing device to the top part is reduced, so that the removal efficiency of the amine-containing liquid drops in the gas flow after the reaction with the amine-poor liquid can be improved.
Preferably, the tube bundle liquid drop removing device is arranged at the upper part of the absorption tower.
According to the utility model, the tube bundle liquid drop removing device is preferably arranged at the upper part of the absorption tower, and the integrated arrangement enables the internal structure of the absorption tower to be compact, and reduces the occupied area of a device system for preventing amine from escaping in the carbon dioxide amine capturing process.
Preferably, the tube bundle droplet removal device comprises at least two cyclone separation devices.
According to the utility model, the air flow reacted with the lean amine liquid passes through the cyclone separation device to generate high-speed centrifugal motion, the amine-containing liquid drops move towards the wall surface of the cyclone separation device under the action of centrifugal force, collide with each other in the motion process, are condensed into larger liquid drops and then are thrown towards the wall surface, and are contacted with a liquid film attached to the wall surface and then killed, so that the amine-containing liquid drops in the air flow are removed.
Preferably, the cyclonic separating apparatus comprises a first impeller and a second impeller.
Preferably, the first impeller is located at an upper portion of the second impeller.
In the utility model, the air flow carrying the amine-containing liquid drops passes through the second impeller and then passes through the first impeller to generate two times of cyclone separation.
Preferably, the first impeller is located at 2/5 and above the top of the cyclonic separating apparatus, and may be, for example, 2/5, 1/2, 3/5 or 4/5.
According to the utility model, the first impeller is further preferably arranged at a position which is far away from 2/5 and above the top of the cyclone separation device, the heat emitted in the reaction process of carbon dioxide in flue gas and lean amine liquid is utilized to enable ascending airflow to form turbulent flow, the first impeller rotates under the action of centrifugal force, additional energy is not required to be provided, and efficient removal of amine-containing liquid drops in the airflow is realized.
Preferably, a guide ring is arranged between the first impeller and the second impeller.
In the utility model, a guide ring is preferably arranged between the first impeller and the second impeller, so that the flow velocity direction of the air flow can be guided, and disordered vortex is avoided.
Preferably, the inner diameter of the guide ring becomes smaller from both ends to the middle.
Preferably, an included angle between the circumferential surface of the deflector ring and a horizontal plane is 15-60 °, for example, 15 °, 20 °, 25 °, 30 °, 40 °, 50 ° or 60 °.
The circumferential surface of the guide ring is a cylindrical surface formed by surrounding the maximum diameter of the guide ring for a circle; the inner diameter of the guide ring is preferably reduced from two ends to the middle, and the included angle between the circumferential surface of the guide ring and the horizontal plane is 15-60 degrees, so that the air flow can be controlled in a proper flow velocity range, liquid drops are formed, and secondary entrainment of the liquid drops containing the amine is prevented.
Preferably, the shape of the first impeller comprises a double flow line type.
Preferably, the shape of the second impeller comprises a double-flow line type.
It is further preferred in the present invention that the first impeller and the second impeller each have a shape comprising a double flow line type, the double flow line type impeller being smooth and being easy to collect liquid droplets, and the air flow resistance being small.
Preferably, a packing is arranged in the absorption tower.
The height of the absorption tower in the present invention is not particularly limited, and is determined according to the carbon dioxide content in the flue gas to be actually treated and the pressure drop of the absorption tower.
Preferably, the amine liquid system comprises a lean amine liquid system and a rich amine liquid system.
Preferably, the lean amine liquid system comprises a lean amine liquid conveying device, a lean amine-rich liquid heat exchange device, a lean amine liquid storage device, a lean amine liquid feeding and conveying device and a lean amine liquid cooling device which are sequentially connected from the lean amine liquid flowing direction.
In the utility model, if the lean amine liquid cooled by the lean amine liquid cooling device contains impurity particles and amine salt, the lean amine liquid is required to enter a solid-liquid separation device and an ion purification device in sequence for purification treatment and then enters a lean amine liquid storage device; if the lean amine liquid cooled by the lean amine liquid cooling device only contains impurity particles, the lean amine liquid can enter the lean amine liquid storage device after being treated by the solid-liquid separation device. And after purification, the lean amine liquid entering the lean amine liquid storage device enters an absorption tower through a lean amine liquid feeding and conveying device and a lean amine liquid cooling device to be absorbed by carbon dioxide.
Preferably, the rich amine liquid system comprises a rich amine liquid conveying device and a lean rich amine liquid heat exchange device which are connected in sequence from the rich amine liquid flowing direction.
In the utility model, the rich amine liquid is preferably intensively conveyed to the lean/rich amine liquid heat exchange device through the rich amine liquid conveying device for heat exchange so as to recycle the heat in the lean amine liquid generated in the desorption tower.
Preferably, the system of resolution towers comprises a resolution tower.
Preferably, a gas condensing device, a reflux liquid collecting device and a reflux liquid conveying device are arranged at the upper part of the desorption tower.
Preferably, the bottom of the desorption column is provided with a reboiling device.
In the utility model, the amine-rich liquid sprayed from the desorption tower and the water vapor evaporated from the reboiler from bottom to top are reversely heated, so that the carbon dioxide in the amine-rich liquid is desorbed, and the whole desorption process is completed.
The use method of the device system for preventing amine from escaping in the carbon dioxide amine capturing process provided by the utility model comprises the following steps:
and after the flue gas enters an absorption tower system to react with the lean amine liquid to remove the carbon dioxide, the lean amine liquid is converted into rich amine liquid, and the flue gas after the carbon dioxide removal is discharged after amine-containing liquid drops are removed by a pipe bundle liquid drop removing device.
The device system for preventing amine from escaping in the carbon dioxide amine capturing process utilizes the cyclone separation device in the tube bundle droplet removing device to remove amine-containing droplets carried in air flow after the reaction with amine liquid due to the action of centrifugal force.
Specifically, the use method of the device system for preventing amine from escaping in the carbon dioxide amine capturing process provided by the utility model comprises the following steps:
the method comprises the following steps of enabling flue gas with the concentration of 10% -40% of carbon dioxide to enter an absorption tower system, enabling the flue gas to react with lean amine liquid at the temperature of 38-42 ℃ to remove the carbon dioxide in the flue gas, converting the lean amine liquid into rich amine liquid, and discharging the flue gas after the carbon dioxide is removed after amine-containing liquid drops are removed through a tube bundle liquid removing device with the thickness of a liquid film of 1-5 mm.
Compared with the prior art, the utility model has at least the following beneficial effects:
(1) the device system for preventing amine from escaping in the carbon dioxide amine capturing process provided by the utility model utilizes the airflow after the reaction with the lean amine liquid to carry out high-speed centrifugal motion in the tube bundle droplet removing device, so that the high-efficiency separation of amine-containing droplets carried in the airflow is realized, and the content of the amine-containing droplets in the airflow at the outlet of the absorption tower can reach 5mg/Nm3The following;
(2) the device system for preventing amine from escaping in the carbon dioxide amine capturing process has low cost for treating the airflow at the outlet of the absorption tower, is simple to operate and regulate, and is suitable for large-scale popularization and use.
Drawings
FIG. 1 is a schematic diagram of an apparatus system for preventing amine slip in a carbon dioxide amine capture process provided in example 1 of the present invention.
FIG. 2 is a top view of a tube bundle droplet removal device in the system of devices for preventing amine escape in the carbon dioxide amine capture process provided in example 1 of the present invention.
FIG. 3 is a front view of a cyclone separation device in the device system for preventing amine from escaping in the carbon dioxide amine capture process provided in example 1 of the present invention.
Fig. 4 is a perspective view of an impeller in the apparatus system for preventing amine escape in the carbon dioxide amine capture process provided in example 1 of the present invention.
In the figure: 1-a tube bundle droplet removing device; 2-an absorption column; 3-lean amine liquid delivery means; 4-lean and rich amine liquid heat exchange device; 5-lean amine liquid storage means; 6-lean amine liquid feeding and conveying device; 7-lean amine liquid cooling device; 8-rich amine liquid conveying device; 9-a filler; 10-a resolution tower; 11-a gas condensing unit; 12-reflux collection means; 13-a reflux liquid delivery device; 14-carbon dioxide discharge pipe; 15-a reboiling unit; 16-ion purification device 17-solid-liquid separation device; 18-flue gas inlet pipe; 19-flue gas discharge pipe; 20-cyclone separation device; 21-a first impeller; 22-a second impeller; 23-guide ring.
Detailed Description
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
The present invention is described in further detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
Example 1
The embodiment provides a device system for preventing amine from escaping in a carbon dioxide amine capture process, and a schematic diagram of the device system is shown in fig. 1. The device system comprises an absorption tower system, an amine liquid system and an analysis tower system which are sequentially connected; the upper part of the absorption tower system is provided with a tube bundle liquid drop removing device 1.
The absorption tower system comprises an absorption tower 2; the inner diameter of the absorption tower 2 from the pipe bundle liquid drop removing device 1 to the top part is reduced, and the pipe bundle liquid drop removing device 1 is arranged at the upper part of the absorption tower 2. A filler 9 is arranged in the absorption tower 2; a flue gas inlet pipe 18 is arranged at the side part of the absorption tower 2; the top of the absorption tower 2 is provided with a flue gas discharge pipe 19.
The amine liquid system comprises an amine-poor liquid system and an amine-rich liquid system; the lean amine liquid system comprises a lean amine liquid conveying device 3, a lean amine liquid heat exchange device 4, a lean amine liquid storage device 5, a lean amine liquid feeding and conveying device 6 and a lean amine liquid cooling device 7 which are sequentially connected from the flow direction of the lean amine liquid; the lean amine liquid system also comprises an ion purification device 16 and a solid-liquid separation device 17. The rich amine liquid system comprises a rich amine liquid conveying device 8 and a lean rich amine liquid heat exchange device 4 which are sequentially connected from the rich amine liquid flowing direction.
The system of resolution towers comprises a resolution tower 10; the upper part of the desorption tower 10 is provided with a gas condensing device 11, a reflux liquid collecting device 12 and a reflux liquid conveying device 13; a carbon dioxide discharge pipe 14 is arranged at the top of the reflux liquid collecting device 12; the bottom of the desorption column 10 is provided with a reboiler 15.
The plan view of the tube bundle liquid drop removing device is shown in fig. 2, and the tube bundle liquid drop removing device 1 comprises at least two cyclone sub-separation devices 20.
The cyclone separation device 20 is shown in a front view in fig. 3, and the cyclone separation device 20 includes a first impeller 21 and a second impeller 22 (shown in a perspective view in fig. 4); the first impeller 21 is positioned at the upper part of the second impeller 22; the first impeller 21 is arranged at 4/5 from the top of the cyclonic separating apparatus 20; a guide ring 23 is arranged between the first impeller 21 and the second impeller 22; the inner diameter of the guide ring 23 is reduced from the two ends to the middle; the included angle between the circumferential surface of the guide ring 23 and the horizontal plane is 45 degrees; the shape of the first impeller 21 includes a double streamline type; the shape of the second impeller 22 includes a double streamline type.
Example 2
The embodiment provides a device system for preventing amine from escaping in a carbon dioxide amine capturing process, which comprises an absorption tower system, an amine liquid system and an analysis tower system which are sequentially connected; and the upper part of the absorption tower system is provided with a tube bundle liquid drop removing device.
The absorption tower system comprises an absorption tower; the inner diameter of the absorption tower from the pipe bundle liquid drop removing device to the top part is reduced; the pipe bundle liquid drop removing device is arranged at the upper part of the absorption tower. The absorption tower is internally provided with a filler; a flue gas inlet pipe is arranged at the side part of the absorption tower; and a flue gas discharge pipe is arranged at the top of the absorption tower.
The lean amine liquid system comprises a lean amine liquid conveying device, a lean amine-rich liquid heat exchange device, a lean amine liquid storage device, a lean amine liquid feeding and conveying device and a lean amine liquid cooling device which are sequentially connected from the flow direction of the lean amine liquid; the lean amine liquid system also comprises an ion purification device and a solid-liquid separation device. The rich amine liquid system comprises a rich amine liquid conveying device and a lean rich amine liquid heat exchange device which are sequentially connected from the flowing direction of the rich amine liquid.
The analysis tower system comprises an analysis tower; the upper part of the desorption tower is provided with a gas condensing device, a reflux liquid collecting device and a reflux liquid conveying device; a carbon dioxide discharge pipe is arranged at the top of the reflux liquid collecting device; and a reboiling device is arranged at the bottom of the desorption tower.
The tube bundle liquid drop removing device comprises at least two cyclone separation devices; the cyclone separation device comprises a first impeller and a second impeller; the first impeller is positioned at the upper part of the second impeller; the first impeller is arranged at 3/5 from the top of the cyclone separation device; a guide ring is arranged between the first impeller and the second impeller; the inner diameter of the guide ring is reduced from two ends to the middle; the included angle between the circumferential surface of the guide ring and the horizontal plane is 15 degrees; the shape of the first impeller comprises a dual streamline shape; the shape of the second impeller includes a double streamline type.
Example 3
The embodiment provides a device system for preventing amine from escaping in a carbon dioxide amine capturing process, which comprises an absorption tower system, an amine liquid system and an analysis tower system which are sequentially connected; and the upper part of the absorption tower system is provided with a tube bundle liquid drop removing device.
The absorption tower system comprises an absorption tower; the inner diameter of the absorption tower from the pipe bundle liquid drop removing device to the top part is reduced; the pipe bundle liquid drop removing device is arranged at the upper part of the absorption tower. The absorption tower is internally provided with a filler; a flue gas inlet pipe is arranged at the side part of the absorption tower; and a flue gas discharge pipe is arranged at the top of the absorption tower.
The lean amine liquid system comprises a lean amine liquid conveying device, a lean amine-rich liquid heat exchange device, a lean amine liquid storage device, a lean amine liquid feeding and conveying device and a lean amine liquid cooling device which are sequentially connected from the flow direction of the lean amine liquid; the lean amine liquid system also comprises an ion purification device and a solid-liquid separation device. The rich amine liquid system comprises a rich amine liquid conveying device and a lean rich amine liquid heat exchange device which are sequentially connected from the flowing direction of the rich amine liquid.
The analysis tower system comprises an analysis tower; the upper part of the desorption tower is provided with a gas condensing device, a reflux liquid collecting device and a reflux liquid conveying device; a carbon dioxide discharge pipe is arranged at the top of the reflux liquid collecting device; and a reboiling device is arranged at the bottom of the desorption tower.
The tube bundle liquid drop removing device comprises at least two cyclone separation devices; the cyclone separation device comprises a first impeller and a second impeller; the first impeller is positioned at the upper part of the second impeller; the first impeller is arranged at 2/5 from the top of the cyclone separation device; a guide ring is arranged between the first impeller and the second impeller; the inner diameter of the guide ring is reduced from two ends to the middle; the included angle between the circumferential surface of the guide ring and the horizontal plane is 60 degrees; the shape of the first impeller comprises a dual streamline shape; the shape of the second impeller includes a double streamline type.
Example 4
This example provides an apparatus system for preventing amine from escaping in a carbon dioxide amine capturing process, which is the same as that of example 1 except that the top of the absorption tower is a cylinder.
Example 5
This example provides an apparatus system for preventing amine escape in a carbon dioxide amine capturing process, which is the same as that of example 1 except that the impeller of the cyclone separation device has a flat plate shape.
Comparative example 1
This comparative example provides an apparatus system for preventing amine from escaping in a carbon dioxide amine capturing process, which is the same as in example 1 except that the tube bundle at the upper portion of the absorption tower was replaced with a liquid droplet removing wire net.
Application example 1
The application example provides a method for preventing amine from escaping in a carbon dioxide amine method trapping process, the method is carried out by adopting the device system for preventing amine from escaping in the carbon dioxide amine method trapping process provided by the embodiment 1, and the method comprises the following steps:
and (3) enabling the flue gas with the carbon dioxide concentration of 30% to enter an absorption tower system, reacting with lean amine liquid at the temperature of 40 ℃ to remove the carbon dioxide, converting the lean amine liquid into rich amine liquid, and discharging the flue gas after the carbon dioxide is removed with amine-containing liquid drops through a pipe bundle liquid drop removing device with the liquid film thickness of 5 mm.
Application example 2
The application example provides a method for preventing amine from escaping in a carbon dioxide amine method trapping process, the method is performed by using the device system for preventing amine from escaping in the carbon dioxide amine method trapping process provided by the embodiment 2, and the method comprises the following steps:
the flue gas with the concentration of carbon dioxide of 10 percent enters an absorption tower system, after the flue gas reacts with lean amine liquid with the temperature of 38 ℃ to remove the carbon dioxide, the lean amine liquid is converted into rich amine liquid, and the flue gas after the carbon dioxide removal is discharged after amine-containing liquid drops are removed by a pipe bundle liquid drop removing device with the thickness of a liquid film of 1 mm.
Application example 3
The application example provides a method for preventing amine from escaping in a carbon dioxide amine method trapping process, the method is performed by using the device system for preventing amine from escaping in the carbon dioxide amine method trapping process provided by the embodiment 3, and the method comprises the following steps:
and (3) enabling the flue gas with the carbon dioxide concentration of 40% to enter an absorption tower system, reacting with lean amine liquid at the temperature of 42 ℃ to remove the carbon dioxide, converting the lean amine liquid into rich amine liquid, and discharging the flue gas after the carbon dioxide is removed with amine-containing liquid drops through a pipe bundle liquid drop removing device with the liquid film thickness of 3 mm.
Application example 4
The application example provides a method for preventing amine from escaping in a carbon dioxide amine method trapping process, the method is carried out by adopting the device system for preventing amine from escaping in the carbon dioxide amine method trapping process provided in the embodiment 4, and the rest is the same as the application example 1.
Application example 5
The application example provides a method for preventing amine from escaping in a carbon dioxide amine method trapping process, the method is carried out by adopting the device system for preventing amine from escaping in the carbon dioxide amine method trapping process provided in the embodiment 5, and the rest is the same as the application example 1.
According to the comprehensive application examples 1-3, the absorption tower in the device system for preventing amine escape in the carbon dioxide amine capturing process provided by the utility model can effectively control the phenomenon of amine escape at the outlet of the absorption tower in the capturing system, and the amine is absorbedThe content of amine-containing liquid drops in the gas flow at the outlet of the tower is less than 5mg/Nm3。
Compared with the embodiments 1 to 3, the effect of the device system for preventing amine from escaping in the carbon dioxide amine capturing process provided in application example 4 and application example 5 on the treatment of the gas flow after the reaction with the lean amine liquid in the absorption tower is slightly reduced, and the content of amine-containing liquid drops in the gas flow at the outlet of the absorption tower is 40 to 80mg/Nm3。
Application comparative example 1
The comparative application example provides a method for preventing amine escape in the carbon dioxide amine capturing process, which is performed by using the apparatus system for preventing amine escape in the carbon dioxide amine capturing process provided in the comparative application example 1, and the rest is the same as the application example 1.
In the device system for preventing amine from escaping in the carbon dioxide amine method trapping process in the application comparative example, the upper part of the absorption tower is provided with the metal defogging wire mesh, the treatment effect on the air flow carrying the amine-containing liquid drops is poor, and the content of the amine-containing liquid drops in the air flow at the outlet of the absorption tower is 120-200 mg/Nm3。
In conclusion, the device system for preventing amine from escaping in the carbon dioxide amine capturing process has a good treatment effect on the airflow at the outlet of the absorption tower in the carbon dioxide amine capturing system, effectively prevents the amine from escaping from the airflow, and reduces the environmental pollution.
The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, additions of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (10)
1. The device system for preventing amine from escaping in the carbon dioxide amine capturing process is characterized by comprising an absorption tower system, an amine liquid system and an analysis tower system which are sequentially connected; and the upper part of the absorption tower system is provided with a tube bundle liquid drop removing device.
2. The apparatus system for preventing amine slip in a carbon dioxide amine capture process of claim 1, wherein the absorber system comprises an absorber;
the inner diameter of the absorption tower from the pipe bundle liquid drop removing device to the top part is reduced;
the pipe bundle liquid drop removing device is arranged at the upper part of the absorption tower;
the tube bundle liquid drop removing device comprises at least two cyclone separation devices.
3. The apparatus system for preventing amine slip in a carbon dioxide amine capture process of claim 2, wherein the cyclone separation device comprises a first impeller and a second impeller;
the first impeller is positioned at the upper part of the second impeller;
the first impeller is located at 2/5 and above the top of the cyclonic separating apparatus.
4. The apparatus system for preventing amine from escaping in the carbon dioxide amine capture process of claim 3, wherein a flow guide ring is arranged between the first impeller and the second impeller;
the inner diameter of the guide ring is reduced from two ends to the middle;
the included angle between the circumferential surface of the flow guide ring and the horizontal plane is 15-60 degrees.
5. The apparatus system for preventing amine escape for carbon dioxide amine capture process of claim 4 wherein the shape of the first impeller comprises a dual flow line type;
the shape of the second impeller includes a double streamline type.
6. The apparatus system for preventing amine escape in carbon dioxide amine capture process as claimed in claim 2, wherein the absorption tower is provided with packing therein.
7. The apparatus system for preventing amine slip in a carbon dioxide amine capture process of claim 1, wherein the amine liquid system comprises a lean amine liquid system and a rich amine liquid system.
8. The device system for preventing amine escape in the carbon dioxide amine capture process according to claim 7, wherein the lean amine liquid system comprises a lean amine liquid conveying device, a lean amine-rich liquid heat exchange device, a lean amine liquid storage device, a lean amine liquid feeding and conveying device and a lean amine liquid cooling device which are connected in sequence from the flow direction of the lean amine liquid.
9. The apparatus system for preventing amine escape in the carbon dioxide amine capture process according to claim 7, wherein the rich amine liquid system comprises a rich amine liquid conveying device and a lean rich amine liquid heat exchanging device which are connected in sequence from the flow direction of the rich amine liquid.
10. The apparatus system for preventing amine slip in a carbon dioxide amine capture process of claim 1, wherein the system of resolution towers comprises a resolution tower;
the upper part of the desorption tower is provided with a gas condensing device, a reflux liquid collecting device and a reflux liquid conveying device;
and a reboiling device is arranged at the bottom of the desorption tower.
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| CN202121895603.4U CN215388690U (en) | 2021-08-13 | 2021-08-13 | Device system for preventing amine from escaping in carbon dioxide amine method trapping process |
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| CN202121895603.4U CN215388690U (en) | 2021-08-13 | 2021-08-13 | Device system for preventing amine from escaping in carbon dioxide amine method trapping process |
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| CN113499680A (en) * | 2021-08-13 | 2021-10-15 | 华润电力（海丰）有限公司 | Device system and method for preventing amine from escaping in carbon dioxide amine method trapping process |
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