Ethylene oxide tail gas emission buffer tank

Abstract

The utility model belongs to the technical field of buffer tanks, and particularly relates to an ethylene oxide tail gas emission buffer tank which comprises a tank body, the top of the tank body is connected with an exhaust port and an air inlet, the bottom of the tank body is connected with a water outlet, the top end of the air inlet is connected with an air outlet of a condenser, and the bottom end of the air inlet is connected with an extension pipe. The bottom end of the extension pipe penetrates to the lower side of the sieve plate, the sieve plate is installed in the middle of the tank body, the top side of the tank body is connected with a feeding port, a discharging assembly is installed in the sieve plate, a discharging port is installed in the side face, located at one end of the discharging assembly, of the tank body, and activated carbon is contained in the tank body above the sieve plate. Active carbon is used for selectively adsorbing the condensed and dehumidified dry tail gas, so that harmful gases such as ethylene in the tail gas are effectively removed, and the tail gas emission quality is improved; and by using the discharging assembly, the convenience of replacement and maintenance of the activated carbon is improved.

Description

Technical Field

[0001] This utility model belongs to the field of buffer tank technology, specifically relating to an ethylene oxide tail gas emission buffer tank. Background Technology

[0002] The treatment of tail gas from the direct oxidation process for ethylene oxide production is a crucial step. Unreacted ethylene in the tail gas is not only flammable but also poses a potential explosion risk. Direct release into the atmosphere would pollute the environment and threaten human health. Furthermore, water vapor in the tail gas, if not effectively treated, will condense into liquid water in subsequent tail gas treatment equipment, affecting its normal operation and potentially causing corrosion and blockages. Therefore, proper treatment of the tail gas is essential to ensure it meets environmental emission standards.

[0003] By selecting the appropriate type of activated carbon and operating conditions, ethylene can be efficiently removed from exhaust gas. However, activated carbon needs to be replaced regularly during long-term adsorption. If it is not replaced in time, the adsorption effect of activated carbon will decrease, resulting in substandard exhaust gas treatment. Furthermore, replacing activated carbon is inconvenient, requiring operators to use tools such as shovels. Operators need to come into direct contact with activated carbon that has adsorbed harmful gases, posing a significant safety hazard to their health. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide an ethylene oxide tail gas emission buffer tank, which solves the problem that existing ethylene oxide tail gas emission systems cannot effectively remove harmful gases such as ethylene from the tail gas.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an ethylene oxide tail gas emission buffer tank, comprising a tank body, an exhaust port and an air inlet connected to the top of the tank body, a drain port connected to the bottom of the tank body, an outlet of a condenser connected to the top of the air inlet, an extension pipe connected to the bottom of the air inlet, the bottom of the extension pipe extending to the lower side of a sieve plate, the sieve plate being installed in the middle of the tank body, a feeding port connected to the top side of the tank body, a discharge assembly installed in the sieve plate, a discharge port installed on the side of the tank body at one end of the discharge assembly, and activated carbon contained in the tank body above the sieve plate.

[0006] The beneficial effects of this invention are as follows: the use of activated carbon to selectively adsorb the dried exhaust gas after condensation and dehumidification effectively removes harmful gases such as ethylene from the exhaust gas and improves the quality of exhaust gas emissions; the use of the unloading component improves the convenience of activated carbon replacement and maintenance.

[0007] In order to quickly and effectively remove the waste activated carbon from the tank;

[0008] As a further improvement to the above technical solution: the sieve plate includes an inclined plate and a semi-circular tube. The inclined plate is welded to both sides of the semi-circular tube, and the inner wall of the tank is welded to the edge of the sieve plate. The end of the inclined plate away from the semi-circular tube is inclined upward.

[0009] The beneficial effects of this improvement are: under the guidance of the semi-circular tube, the activated carbon above the sieve plate can effectively flow into the semi-circular tube, which facilitates the collection and discharge of the activated carbon.

[0010] To further improve the efficiency of activated carbon replacement;

[0011] As a further improvement to the above technical solution: the unloading assembly includes a support base, which is installed opposite to the unloading port and fixed on the side of the tank. An auger is rotatably installed on the support base. The auger is rotatably arranged in a semi-circular tube and coaxial with the semi-circular tube. The unloading port includes a flange tube and a blind plate that is bolted to the flange tube.

[0012] The beneficial effect of this improvement is that after removing the blind flange in the discharge port, the operator can rotate the auger to quickly discharge the activated carbon on the screen plate from the tank.

[0013] To save effort in turning the auger;

[0014] As a further improvement to the above technical solution: a handwheel is connected to one end of the auger.

[0015] The beneficial effect of this improvement is that the operator can hold the handwheel and rotate the auger with less effort.

[0016] To facilitate the addition of new activated carbon to the sieve plate;

[0017] As a further improvement to the above technical solution: the feeding port includes a flange pipe and a blind plate that is bolted to the flange pipe.

[0018] The beneficial effect of this improvement is that after removing the blind plate in the feeding port, the operator can easily feed new activated carbon onto the screen plate.

[0019] For convenient monitoring and viewing of the water level inside the tank;

[0020] As a further improvement to the above technical solution: a level gauge connection flange for connecting a glass tube level gauge is installed on the side of the tank below the sieve plate.

[0021] The beneficial effect of this improvement is that a glass tube level gauge can be quickly installed on the tank via the level gauge connection flange to effectively monitor the water level inside the tank.

[0022] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a front sectional view of the present invention;

[0025] Figure 3 This is a side sectional view of the present invention;

[0026] In the diagram: 1. Tank body; 2. Exhaust port; 3. Air inlet; 4. Extension pipe; 5. Screen plate; 51. Inclined plate; 52. Semicircular pipe; 6. Feeding port; 7. Discharge port; 8. Level gauge connecting flange; 9. Discharge assembly; 91. Support base; 92. Screwdriver; 93. Handwheel; 10. Drain outlet. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0028] Example 1:

[0029] like Figure 1—3 shows: An ethylene oxide tail gas emission buffer tank, comprising a tank body 1, an exhaust port 2 and an inlet port 3 connected to the top of the tank body 1, a drain port 10 connected to the bottom of the tank body 1, an outlet port 3 connected to the top of the inlet port 3, an extension pipe 4 connected to the bottom of the inlet port 3, the bottom of the extension pipe 4 extending to the lower side of a sieve plate 5, the sieve plate 5 being installed in the middle of the tank body 1, a feeding port 6 connected to the top side of the tank body 1, a discharge assembly 9 installed in the sieve plate 5, and a [missing information - likely a device or component] installed on the side of the tank body 1 at one end of the discharge assembly 9. The discharge port 7, the tank 1 above the screen plate 5 contains activated carbon, which selectively adsorbs the dried exhaust gas after condensation and dehumidification, effectively removing harmful gases such as ethylene from the exhaust gas and improving the quality of exhaust gas emissions; the use of the discharge assembly 9 improves the convenience of activated carbon replacement and maintenance. The screen plate 5 includes an inclined plate 51 and a semi-circular tube 52. The inclined plate 51 is welded to both sides of the semi-circular tube 52, and the inner wall of the tank 1 is welded to the edge of the screen plate 5. The end of the inclined plate 51 away from the semi-circular tube 52 is inclined upwards. Under the guidance of the semi-circular tube 52, the screen... The activated carbon above plate 5 can effectively flow into the semi-circular pipe 52, facilitating the collection and discharge of the activated carbon. The unloading assembly 9 includes a support base 91, which is installed opposite to the unloading port 7 and fixed on the side of the tank body 1. An auger 92 is rotatably mounted on the support base 91. The auger 92 is rotatably disposed in the semi-circular pipe 52 and coaxial with the semi-circular pipe 52. The unloading port 7 includes a flange pipe and a blind plate connected to the flange pipe by bolts. After removing the blind plate in the unloading port 7, the operator can rotate the auger 92 to quickly discharge the activated carbon on the sieve plate 5. Discharge is made into tank 1. One end of the auger 92 is connected to a handwheel 93, which allows the operator to easily rotate the auger 92 by holding the handwheel 93. The feeding port 6 includes a flange pipe and a blind plate that is bolted to the flange pipe. After removing the blind plate from the feeding port 6, the operator can easily add new activated carbon to the sieve plate 5. A level gauge connecting flange 8 for connecting a glass tube level gauge is installed on the side of tank 1 below the sieve plate 5. The glass tube level gauge can be quickly installed on tank 1 through the level gauge connecting flange 8 to effectively check the water level in tank 1.

[0030] The working principle of this technical solution is as follows: Before entering the tank 1, the exhaust gas is condensed by the first and second stage condensers commonly used in existing technologies, so that the water vapor carried in the exhaust gas is condensed into liquid. When it enters the tank 1 through the air inlet 3 and the extension pipe 4, the water is deposited at the bottom of the tank 1. The gas with the water removed then passes upward through the sieve plate 5 and is selectively adsorbed by the activated carbon to remove ethylene, thereby discharging clean air through the exhaust port 2. When the activated carbon needs to be replaced, the blind plate on the discharge port 7 is removed, and the auger 92 is rotated by holding the handwheel 93 to quickly discharge the activated carbon on the sieve plate 5. Then the blind plate on the discharge port 7 is reconnected, and the blind plate on the feed port 6 is removed to feed new activated carbon onto the sieve plate 5.

[0031] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of the present invention, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A buffer tank for ethylene oxide tail gas emission, characterized in that: The container includes a tank (1), with an exhaust port (2) and an air inlet (3) connected to the top of the tank (1), a drain port (10) connected to the bottom of the tank (1), the top of the air inlet (3) connected to the air outlet of the condenser, an extension pipe (4) connected to the bottom of the air inlet (3), the bottom of the extension pipe (4) extending to the lower side of a sieve plate (5), the sieve plate (5) installed in the middle of the tank (1), a feeding port (6) connected to the top side of the tank (1), a discharge assembly (9) installed in the sieve plate (5), a discharge port (7) installed on the side of the tank (1) at one end of the discharge assembly (9), and activated carbon contained in the tank (1) above the sieve plate (5).

2. The ethylene oxide tail gas emission buffer tank according to claim 1, characterized in that: The sieve plate (5) includes an inclined plate (51) and a semi-circular tube (52). The inclined plate (51) is welded to both sides of the semi-circular tube (52), and the inner wall of the tank body (1) is welded to the edge of the sieve plate (5). The end of the inclined plate (51) away from the semi-circular tube (52) is inclined upward.

3. The ethylene oxide tail gas emission buffer tank according to claim 1, characterized in that: The unloading assembly (9) includes a support base (91), which is installed opposite to the unloading port (7) and fixed on the side of the tank body (1). An auger (92) is rotatably installed on the support base (91). The auger (92) is rotatably arranged in a semi-circular tube (52) and coaxial with the semi-circular tube (52). The unloading port (7) includes a flange tube and a blind plate that is bolted to the flange tube.

4. The ethylene oxide tail gas emission buffer tank according to claim 3, characterized in that: One end of the auger (92) is connected to a handwheel (93).

5. The ethylene oxide tail gas emission buffer tank according to claim 1, characterized in that: The feeding port (6) includes a flange and a blind plate that is bolted to the flange.

6. The ethylene oxide tail gas emission buffer tank according to claim 1, characterized in that: A level gauge connecting flange (8) for connecting a glass tube level gauge is installed on the side of the tank (1) below the sieve plate (5).

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