Device for acid gas treatment

Abstract

The utility model discloses a device for acid gas treatment, which comprises an absorption system and an acid removal system, the absorption system comprises a storage tank, an exhaust port, a gas outlet pipeline, a gas inlet pipeline, an acid gas detector, a centrifugal fan and a control system, and the exhaust port arranged on the storage tank is hermetically communicated with one end of the gas outlet pipeline; an acid gas detector is arranged at the joint of the exhaust port and the gas outlet pipeline, the acid gas detector is electrically connected with a control system, the control system is electrically connected with a centrifugal fan, the other end of the gas outlet pipeline is provided with and hermetically communicated with the centrifugal fan, one end of the gas inlet pipeline is hermetically communicated with the centrifugal fan, and the other end of the gas inlet pipeline is connected with a deacidification system; the deacidification system comprises a demister, a liquid accumulation pit and a self-priming pump, solid particles in flue gas entering the demister are automatically removed through a spraying nozzle arranged in the demister, meanwhile, the pH value of alkali liquor in the liquid accumulation pit can be monitored, and discharged sewage is prevented from polluting the environment.

Description

Technical Field

[0001] The utility model relates to the technical field of inorganic chemistry, in particular to an application of a device for acid gas treatment. Background Art

[0002] Conventional demisting devices are complex, occupy a large area, and are expensive. They are not suitable for small amounts of intermittent demisting of tank exhaust ports. Therefore, this demisting device for tank exhaust ports has been invented, which has a simple structure, small footprint, low energy consumption, and low cost. Utility Model Content

[0003] The purpose of the utility model is to provide a device for acid gas treatment to solve the above problems.

[0004] In order to achieve the above objectives, the following technical solutions are provided:

[0005] An apparatus for treating acid gas comprises: an absorption system and an acid removal system, the absorption system comprising a storage tank, an exhaust port, an outlet pipe, an inlet pipe, an acid gas detector, a centrifugal fan, and a control system, the exhaust port provided on the storage tank being in sealed communication with one end of the outlet pipe, an acid gas detector being provided at the junction of the exhaust port and the outlet pipe, the acid gas detector being electrically connected to the control system, the control system being electrically connected to the centrifugal fan, the other end of the outlet pipe being provided with a centrifugal fan and being in sealed communication with the centrifugal fan, one end of the inlet pipe being in sealed communication with the centrifugal fan, and the other end of the inlet pipe being connected to the acid removal system;

[0006] Preferably, the acid removal system includes: a demister, an exhaust pipe, a drainage pipe, a spray nozzle, a liquid accumulation pit, a self-priming pump, a water inlet pipe and a water outlet pipe, one side of the demister is sealed and connected to the other end of the air inlet pipe, a spray nozzle is provided at the top of the demister, the bottom of the demister is sealed and connected to one end of the drainage pipe, the other end of the drainage pipe extends into the liquid accumulation pit, the demister is sealed and connected to one end of the water outlet pipe, one end of the water inlet pipe extends into the bottom of the liquid accumulation pit, the other ends of the water outlet pipe and the other ends of the water inlet pipe are sealed and connected to the output end and input end of the water suction pump respectively;

[0007] Preferably, a "U"-shaped baffle is provided below the spray nozzle inside the demister to increase the utilization rate of the sprayed alkali solution and reduce the energy consumption of the device;

[0008] Preferably, the liquid in the liquid accumulation pit is alkali solution, a pH value detector is provided on the inner wall of the liquid accumulation pit, and an alarm light is provided on the outer wall of the liquid accumulation pit. The pH value detector is electrically connected to the alarm light, and the pH value of the alkali solution in the liquid accumulation pit can be checked in real time. When the pH value of the alkali solution is neutral, the alarm light lights up, the device stops running, and the alkali solution in the liquid accumulation pit needs to be replaced;

[0009] Preferably, the liquid accumulation pit is in sealed communication with one end of the sewage pipe, and the liquid accumulation pit is in sealed communication with the alkali solution pipe to discharge the neutral liquid and replace the alkali solution;

[0010] Preferably, both the sewage pipe and the alkali solution pipe are provided with regulating valves to control the flow rates of the alkali solution and the neutral liquid.

[0011] The beneficial effects of the utility model are:

[0012] The device primarily consists of a demister, a centrifugal fan, and a liquid sump. An acid gas detector, located at the connection between the tank's exhaust port and the outlet pipe, automatically controls the centrifugal fan's on / off function, enabling intermittent demisting of small amounts of alkali liquid from the tank's exhaust port. Alkali is also added through the sump, and a pH meter installed inside the sump monitors the alkali liquid's pH in real time. When the pH is neutral, an alarm light illuminates, the alkali liquid is discharged through the sewage pipe, and alkali liquid is added through the alkali pipe. A "U"-shaped baffle located below the spray nozzle inside the demister increases the utilization rate of the sprayed alkali liquid and reduces the device's operating power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the process flow chart of the utility model system;

[0014] The reference numerals shown in the figure are: 1 storage tank, 12 exhaust port, 13 acid gas detector, 14 exhaust pipe, 15 intake pipe, 16 centrifugal fan, 17 control system, 2 demister, 21 spray nozzle, 22 "U"-shaped baffle, 23 drainage pipe, 24 exhaust pipe, 3 liquid accumulation pit, 31 pH value detector, 32 alarm light, 33 water inlet pipe, 34 self-priming pump, 35 water outlet pipe, 36 sewage pipe, 37 alkali solution pipe, 38 regulating valve. DETAILED DESCRIPTION

[0015] The following is a detailed description of this design scheme with reference to the accompanying drawings.

[0016] An apparatus for treating acid gas includes: an absorption system and an acid removal system. The absorption system includes a storage tank 1, an exhaust port 12, an outlet pipe 14, an inlet pipe 15, an acid gas detector 13, a centrifugal fan 16, and a control system 17. The exhaust port 12 provided on the storage tank 1 is sealed and connected to one end of the outlet pipe 14. The acid gas detector 13 is provided at the intersection of the exhaust port 12 and the outlet pipe 14. The acid gas detector 13 is electrically connected to the control system 17. The control system 17 is electrically connected to the centrifugal fan 16. The other end of the outlet pipe 14 is provided with a centrifugal fan 16 and is sealed and connected. One end of the inlet pipe 15 is sealed and connected to the centrifugal fan 16. The other end of the inlet pipe 15 is connected to the acid removal system. The centrifugal fan 16 is automatically controlled to be turned on and off by the acid gas detector 13 and the control system 17, so that it can demist the exhaust port 12 of the storage tank 1 in small quantities and intermittently, thereby saving energy consumption.

[0017] In some embodiments, the acid removal system includes: a demister 2, an exhaust pipe 24, a drain pipe 23, a spray nozzle 21, a liquid accumulation pit 3, a self-priming pump 34, a water inlet pipe 33 and a water outlet pipe 35. The top of the demister 2 is provided with a spray nozzle 21. The bottom of the demister 2 is sealed and connected to one end of the drain pipe 23. The other end of the drain pipe 23 extends into the bottom of the liquid accumulation pit 3, so that the acid gas that has not come into contact with the alkali solution enters the liquid accumulation pit 3 through the exhaust pipe 24 to prevent the air pressure in the demister 2 from being too high. The demister 2 is sealed and connected to one end of the water outlet pipe 35. One end of the water inlet pipe 33 extends into the bottom of the liquid accumulation pit 3. The other end of the water outlet pipe 35 and the other end of the water inlet pipe 33 are sealed and connected to the water suction pump. When the acid gas enters the demister 2, the spray nozzle 21 is opened to release the alkali solution to combine with the acid gas to achieve a neutral pH value.

[0018] In some embodiments, a "U"-shaped baffle 22 is provided below the spray nozzle 21 inside the demister 2 to increase the utilization rate of the sprayed alkali solution and reduce the energy consumption of the device operation;

[0019] In some embodiments, the liquid in the liquid accumulation pit 3 is alkaline solution, and a pH value detector 31 is provided on the inner wall of the liquid accumulation pit 3, and an alarm light 32 is provided on the outer wall of the liquid accumulation pit 3. The pH value detector 31 is electrically connected to the alarm light to check the pH value of the alkaline solution in the liquid accumulation pit 3 in real time. When the pH value of the alkaline solution is neutral, the alarm light 32 lights up, the device stops operating, and the alkaline solution in the liquid accumulation pit 3 needs to be replaced;

[0020] In some embodiments, the liquid accumulation pit 3 is sealed and connected to one end of the sewage pipe 36, and the liquid accumulation pit 3 is sealed and connected to the alkali solution pipe 37, and the neutral liquid is discharged and the alkali solution is replaced through the sewage pipe 36 and the alkali solution pipe 37;

[0021] In some embodiments, both the sewage pipe 36 and the alkali solution pipe 37 are provided with regulating valves 38 to control the flow rates of the alkali solution and the neutral liquid.

[0022] How it works

[0023] The exhaust port 12 provided in the storage tank 1 is used to discharge the acid gas during unloading. The acid gas detector 13 controls the switch of the centrifugal fan 16. When the acid gas detector 13 detects that the acid gas concentration exceeds the standard, the control system 17 automatically turns on the centrifugal fan 16, and the acid gas is sent to the air inlet pipe 15 through the centrifugal fan 16 and the air outlet pipe 14, and then enters the demister 2 through the pipeline for acid removal.

[0024] When the acid gas enters the demister 2, the self-priming pump 34 extracts the alkali liquid in the sump 3 from the sump 3 through the water inlet pipe 33, and sends the alkali liquid to the spray nozzle 21 through the pipe of the storage tank 1. The spray nozzle 21 sprays the alkali liquid to form a 120-degree spray surface covering the entire inner wall of the demister 2, removing the solid particles in the flue gas sent from the exhaust pipe 14. The alkali liquid carries the solid particles in the flue gas into the sump 3. In order to make the most of the spray, a "U"-shaped baffle 22 is provided below the spray nozzle 21 inside the demister 2. The acid gas that is not completely removed is sent to the bottom of the sump 3 through the exhaust pipe 24 provided on the side of the demister 2 to contact the alkali liquid, and to prevent the air pressure in the demister 2 from being too high.

[0025] The liquid in the liquid accumulation pit 3 is alkaline solution. A pH detector 31 is provided on the side wall of the liquid accumulation pit 3. The pH value detector 31 is used to detect the pH value of the alkaline solution in the liquid accumulation pit 3. When the pH value detector 31 detects that it is neutral, an alarm light 32 provided on the outside of the liquid accumulation pit 3 lights up, indicating that the alkaline solution needs to be replaced. After the equipment is turned off, the used alkaline solution is discharged through the sewage pipe 36, and new alkaline solution is added through the alkaline solution pipe 37 to enable it to continue working, and its flow rate is adjusted by the regulating valve 38.

[0026] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0027] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A device for acid gas treatment, characterized in that: include: An absorption system and an acid removal system, wherein the absorption system includes a storage tank, an exhaust port, an outlet pipe, an inlet pipe, an acid gas detector, a centrifugal fan, and a control system. The exhaust port provided on the storage tank is in sealed communication with one end of the outlet pipe. An acid gas detector is provided at the junction of the exhaust port and the outlet pipe. The acid gas detector is electrically connected to the control system, which is electrically connected to the centrifugal fan. The other end of the outlet pipe is provided with a centrifugal fan and is in sealed communication with the centrifugal fan. One end of the inlet pipe is in sealed communication with the centrifugal fan, and the other end of the inlet pipe is connected to the acid removal system. The acid removal system includes: a demister, an exhaust pipe, a drainage pipe, a spray nozzle, a liquid accumulation pit, a self-priming pump, a water inlet pipe and a water outlet pipe. One side of the demister is sealed and connected to the other end of the air inlet pipe. A spray nozzle is provided at the top of the demister. The bottom of the demister is sealed and connected to one end of the drainage pipe. The other end of the drainage pipe extends into the liquid accumulation pit. The spray nozzle provided inside the demister is sealed and connected to one end of the water outlet pipe. One end of the water inlet pipe extends into the bottom of the liquid accumulation pit. The other end of the water outlet pipe and the other end of the water inlet pipe are sealed and connected to the output end and input end of the water suction pump respectively.

2. The device for acid gas treatment according to claim 1, characterized in that: A "U"-shaped baffle is provided below the internal spray nozzle of the demister.

3. The device for acid gas treatment according to claim 1, characterized in that: The liquid in the liquid accumulation pit is alkaline solution, the inner wall of the liquid accumulation pit is provided with a pH value detector, the outer wall of the liquid accumulation pit is provided with an alarm light, and the pH value detector is electrically connected to the alarm light.

4. The device for acid gas treatment according to claim 3, characterized in that: The liquid accumulation pit is in sealed communication with one end of the sewage pipe, and the liquid accumulation pit is in sealed communication with the alkali solution pipe.

5. The device for acid gas treatment according to claim 4, characterized in that: The sewage pipeline and the alkali solution pipeline are respectively provided with regulating valves.

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