Device for treating odor of low-pressure torch gas of butanol and octanol device

Abstract

The utility model provides a device for treating odor of low-pressure torch gas of a butanol and octanol device, which relates to the technical field of odor treatment of low-pressure tail gas of the butanol and octanol device and comprises a fan, one side of the fan is connected with a low-pressure emptying gas pipe, and the upper surface of the low-pressure emptying gas pipe is connected with a high-pressure emptying gas pipe. In the utility model, the low-pressure tail gas emission is mainly emptied in a butyraldehyde tank area, the fluctuation is larger due to the influence of temperature change, the emptying amount is sometimes large and sometimes small, the pressure of the low-pressure tail gas is ensured to be stable through the pressure stabilizing system, after the pressure of the low-pressure tail gas is stable, the tail gas is conveyed to the three-waste furnace for incineration treatment through pressurization of the fan, and the low-pressure tail gas is introduced into the three-waste furnace for incineration; in order to ensure safe and stable operation of the three-waste furnace, various safety guarantee measures are arranged in the system, safe operation is ensured, the problems of incomplete low-pressure tail gas combustion and large on-site peculiar smell are solved, the original device is directly matched with the three-waste furnace for tail gas treatment, and the investment cost is predicted to be saved by 6 million compared with that of a newly-built RTO system.

Description

Technical Field

[0001] The utility model relates to the technical field of odor control of low-pressure tail gas from a butanol and octanol device, in particular to a device for odor control of low-pressure flare gas from a butanol and octanol device. Background Art

[0002] The low-pressure gas released from the 1,2-butanol unit has 5% butyraldehyde and 90% nitrogen as its main gas components. The original design disposal method was to burn it through a torch. However, due to the high nitrogen content in this gas, it is not easy to ignite and is very likely to cause an unpleasant odor on site.

[0003] According to current environmental protection requirements, domestic butyl octanol plants have carried out relevant modifications for low-pressure flare gas. Most of them have built a new RTO plant to treat the tail gas. However, during the treatment, the tail gas must undergo deep cooling, liquid phase adsorption, gas dilution and other measures before entering the RTO furnace to ensure the state of the tail gas entering the RTO furnace. Any problems in the intermediate links may cause RTO furnace failure, and the total investment in RTO furnace and supporting facilities is about 7 million, which is relatively costly. Therefore, we proposed a new device for odor control of low-pressure flare gas in butyl octanol plants. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that the existing tail gas must undergo deep cooling, liquid phase adsorption, gas dilution and other measures before entering the RTO furnace to ensure the state of entering the RTO furnace, any problem in the intermediate links may cause RTO furnace failure, and the total investment in RTO furnace and supporting facilities is about 7 million, which is costly.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a device for controlling the odor of low-pressure flare gas of a butanol device, comprising a blower, one side of the blower is connected to a low-pressure air vent pipe, the upper surface of the low-pressure air vent pipe is connected to a high-pressure air vent pipe, the surface of the high-pressure air vent pipe is connected to a first valve, the lower surface of the low-pressure air vent pipe is connected to a nitrogen pipe, the other side of the blower is connected to an oxygen meter, one side of the oxygen meter is connected to a branch pipe, one side of the branch pipe is connected to a second valve, one side of the second valve is connected to a first flame arrester, one side of the first flame arrester is connected to a ground flare, the other side of the oxygen meter is connected to a water distribution pipe, the upper surface of one side of the water distribution pipe is connected to a second flame arrester, one side of the second flame arrester is connected to a three-waste furnace, the lower surface of one side of the water distribution pipe is connected to a filter assembly, and one side of the filter assembly is connected to a waste liquid recovery tank.

[0006] Furthermore, the fan is electrically connected to an external power supply via a control switch.

[0007] Furthermore, the filter assembly includes a filter box, a card slot is provided inside the filter box, and magnetic blocks are embedded in the inner walls on both sides of the card slot.

[0008] Furthermore, a filter screen is provided inside the card slot, and the outer surfaces on both sides of the filter screen are connected to filter screens.

[0009] Furthermore, the filter screen is slidably connected to the filter box via a slot.

[0010] Furthermore, a magnetic connection is formed between the magnetic block and the magnet.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] 1. In the present invention, the low-pressure tail gas emission is mainly discharged from the butyraldehyde tank area, which fluctuates greatly due to the change of temperature, and the discharge volume is sometimes large and sometimes small. The low-pressure tail gas pressure is ensured to be stable by the pressure stabilizing system. After the low-pressure tail gas pressure is stable, the tail gas is pressurized by the fan and transported to the three-waste furnace for incineration treatment. The low-pressure tail gas is introduced into the three-waste furnace for incineration. In order to ensure the safe and stable operation of the three-waste furnace, a variety of safety measures are set in the system to ensure safe operation and solve the problems of incomplete combustion of low-pressure tail gas and strong odor on site. The tail gas is directly treated by the three-waste furnace equipped with the original device. The investment cost is expected to save 6 million compared with a new RTO system.

[0013] 2. In the present invention, impurities in the waste liquid can be filtered through the filter screen to improve the cleanliness of the waste liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of a device for treating odor of low-pressure flare gas from a butanol and octanol plant proposed in the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure from another angle of a device for treating odor of low-pressure flare gas from a butanol and octanol plant proposed in the utility model;

[0016] Figure 3 The utility model provides a schematic diagram of the explosion structure of a filter box of a device for treating odor of low-pressure flare gas of a butanol device.

[0017] Legend: 1. Fan; 2. Low-pressure vent air pipe; 3. High-pressure vent air pipe; 4. First valve; 5. Nitrogen pipe; 6. Oxygen meter; 7. Branch pipe; 8. Second valve; 9. First flame arrester; 10. Ground flare; 11. Water distribution pipe; 12. Second flame arrester; 13. Three-waste furnace; 14. Filter assembly; 1401. Filter box; 1402. Card slot; 1403. Magnetic block; 1404. Magnet; 1405. Filter screen; 15. Waste liquid recovery tank. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Example 1, as Figure 1 - Figure 2 As shown, the utility model provides a device for treating the odor of low-pressure flare gas of a butanol device, comprising a blower 1, a low-pressure air vent pipe 2 being connected to one side of the blower 1, a high-pressure air vent pipe 3 being connected to the upper surface of the low-pressure air vent pipe 2, a first valve 4 being connected to the surface of the high-pressure air vent pipe 3, a nitrogen pipe 5 being connected to the lower surface of the low-pressure air vent pipe 2, an oxygen meter 6 being connected to the other side of the blower 1, a branch pipe 7 being connected to one side of the oxygen meter 6, a second valve 8 being connected to one side of the branch pipe 7, a first flame arrester 9 being connected to one side of the second valve 8, a ground flare 10 being connected to one side of the first flame arrester 9, a water diversion pipe 11 being connected to the other side of the oxygen meter 6, a second flame arrester 12 being connected to the upper surface of one side of the water diversion pipe 11, a three-waste furnace 13 being connected to one side of the second flame arrester 12, a filter assembly 14 being connected to the lower surface of one side of the water diversion pipe 11, a waste liquid recovery tank 15 being connected to one side of the filter assembly 14, and the blower 1 being electrically connected to an external power supply through a control switch.

[0021] The effect achieved by the entire embodiment 1 is that the original disposal scheme for the low-pressure tail gas of the butanol device is to enter the flare or RTO treatment. Under the existing system, the low-pressure tail gas is introduced into the three-waste furnace 13 in the butanol supporting coal gasification device for disposal, saving the investment cost of the RTO furnace and supporting facilities. The specific process is that the low-pressure tail gas enters the three-waste furnace 13 through the low-pressure vent air pipe 2 and the fan 1 through the water seal system for incineration, the fan 1 inlet pipeline introduces a high-pressure vent air pipe 3, and the fan 1 outlet is provided with an outlet regulating valve and a return Flow regulating valve, the pressure of fan 1 inlet is increased and transmitted remotely, the pressure of fan 1 is supplemented by high-pressure exhaust gas, the first valve 4 and the return valve at the outlet of fan 1 are adjusted smoothly to ensure that the inlet pressure of fan 1 is maintained at 3kpa, and the fan outlet pressure is 8kpa. The outlet pipeline of fan 1 is equipped with a flow meter to monitor and adjust the outlet flow, and an online oxygen meter and oxygen meter 6 are interlocked. The interlocking action stops fan 1 to ensure that the gas entering the three waste furnace 13 is in an oxygen-free state. The exhaust gas passes through the water seal and the anti-detonation flame arrester from fan 1 and enters the three waste furnace 13 for incineration.

[0022] Example 2, as Figure 1 、 Figure 2 and Figure 3 As shown, the filter assembly 14 includes a filter box 1401, a card slot 1402 is opened inside the filter box 1401, magnetic blocks 1403 are embedded in the inner walls on both sides of the card slot 1402, a filter screen 1405 is provided inside the card slot 1402, and the outer surfaces on both sides of the filter screen 1405 are connected to the filter screen 1405, the filter screen 1405 is slidably connected to the filter box 1401 through the card slot 1402, and a magnetic connection is formed between the magnetic block 1403 and the magnet 1404.

[0023] The effect achieved by the entire embodiment 2 is that when the waste liquid enters the waste liquid recovery tank 15, it will first be filtered for impurities through the filter screen 1405. After long-term use, when the filter screen 1405 needs to be taken out for cleaning, it can be directly pulled out upwards to allow the filter screen 1405 to be pulled out from the card slot 1402, and then the filter screen 1405 is cleaned. After cleaning the filter screen 1405, the filter screen 1405 is inserted into the card slot 1402, so that the magnetic block 1403 and the magnet 1404 are magnetically fixed, thereby improving the stability of the filter screen 1405 in the card slot 1402, and the impurities in the waste liquid are filtered through the filter screen 1405.

[0024] Working principle: Low-pressure tail gas emissions are mainly discharged from the butyraldehyde tank area, which fluctuates greatly due to changes in temperature, and the discharge volume is sometimes large and sometimes small. The pressure stabilization system is used to ensure the stability of the low-pressure tail gas pressure. After the low-pressure tail gas pressure is stable, the tail gas is pressurized by the fan to be transported to the three-waste furnace 13 for incineration treatment. The low-pressure tail gas is introduced into the three-waste furnace 13 for incineration. In order to ensure the safe and stable operation of the three-waste furnace 13, a variety of safety measures are set in the system to ensure safe operation and solve the problems of incomplete combustion of low-pressure tail gas and strong odor on site. The original device is directly used to match the three-waste furnace 13 for tail gas treatment. The investment cost is expected to save 6 million compared to building a new RTO system. The impurities in the waste liquid can be filtered through the filter 1405 to improve the cleanliness of the waste liquid.

[0025] The above are merely preferred embodiments of the present invention and do not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A device for treating odor of low-pressure flare gas from a butanol and octanol plant, comprising a blower (1), characterized in that: One side of the blower (1) is connected to a low-pressure air vent pipe (2), the upper surface of the low-pressure air vent pipe (2) is connected to a high-pressure air vent pipe (3), the surface of the high-pressure air vent pipe (3) is connected to a first valve (4), the lower surface of the low-pressure air vent pipe (2) is connected to a nitrogen pipe (5), the other side of the blower (1) is connected to an oxygen meter (6), one side of the oxygen meter (6) is connected to a branch pipe (7), one side of the branch pipe (7) is connected to a second valve (8), the second valve (8) ) is connected to a first flame arrester (9) on one side, the first flame arrester (9) is connected to a ground flare (10) on one side, the other side of the oxygen meter (6) is connected to a water distribution pipe (11), the upper surface of one side of the water distribution pipe (11) is connected to a second flame arrester (12), one side of the second flame arrester (12) is connected to a three-waste furnace (13), the lower surface of one side of the water distribution pipe (11) is connected to a filter assembly (14), and one side of the filter assembly (14) is connected to a waste liquid recovery tank (15).

2. The device for treating the odor of low-pressure flare gas from a butanol and octanol device according to claim 1, wherein: The fan (1) is electrically connected to an external power supply via a control switch.

3. The device for treating the odor of low-pressure flare gas from a butanol and octanol device according to claim 1, wherein: The filter assembly (14) comprises a filter box (1401), a card slot (1402) is provided inside the filter box (1401), and magnetic blocks (1403) are embedded in the inner walls of both sides of the card slot (1402).

4. The device for treating odor of low-pressure flare gas from a butanol and octanol device according to claim 3, wherein: A filter screen (1405) is provided inside the card slot (1402), and both outer surfaces of the filter screen (1405) are connected to filter screens (1405).

5. The device for treating the odor of low-pressure flare gas from a butanol and octanol device according to claim 4, wherein: The filter screen (1405) is in sliding connection with the filter box (1401) via the slot (1402).

6. The device for treating odor of low-pressure flare gas from a butanol and octanol device according to claim 5, characterized in that: A magnetic connection is formed between the magnetic block (1403) and the magnet (1404).

Images