Odor eliminating device for auxiliary agent filling of petrochemical device

Abstract

In order to solve the problem that poisonous gas is easy to escape when an assistant is filled into an assistant barrel, the utility model provides the peculiar smell eliminating device for filling the assistant into the petrochemical device, which comprises a vacuum generator, the air inlet end of the vacuum generator is connected with an instrument air supply pipe through an air inlet pipe, and the suction end of the vacuum generator is connected with an air collecting cover through a suction pipe; the air collecting cover is located above the assistant barrel, the air outlet end of the vacuum generator is connected with the communicating pipe through the air outlet pipe, the communicating pipe is connected with a waste oil tank or a low-pressure gas emptying system, purified air is used as the air supply end of the vacuum generator, and a negative pressure environment is generated above the assistant barrel through the air collecting cover at the suction end of the vacuum generator. Poisonous and harmful gases generated in the addition agent filling process are discharged into an underground slop oil tank or a low-pressure gas emptying system, so that the pollution to the environment in the filling process is reduced, and the potential toxicity to the body health of operators is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of petrochemical devices, in particular to an odor elimination device used for adding additives to petrochemical devices. Background Art

[0002] Petrochemical plants use some additives in the production process to improve catalyst activity, inhibit side reactions, slow down the rate of carbon deposition in the system, and slow down corrosion. Common additives include tetrachloroethylene, dimethyl disulfide, corrosion inhibitors, etc. The above liquid additives are generally packaged in barrels, most of which are volatile and are transported to the production site from time to time. During the filling process, these additives are generally filled using a pneumatic diaphragm pump inlet connected to a liquid extraction pipe through a metal hose, which is inserted into the inlet of the additive barrel cover and filled into the additive tank. During this process, some additives will evaporate into the atmosphere through the gap in the barrel cover. Usually, a large odor will be generated around the area during filling. If the barrel cover is completely sealed, the extraction of the additives will be affected. Under current technical conditions, this process has certain adverse effects on the health of the filling personnel and the environment. Utility Model Content

[0003] In order to solve the problem of toxic gas escaping easily when adding additives to the additive barrel, the utility model provides an odor elimination device for adding additives to petrochemical equipment. The technical solution adopted is as follows:

[0004] An odor elimination device for adding additives to a petrochemical device is characterized in that it includes a vacuum generator, the air inlet end of the vacuum generator is connected to the instrument air supply pipe through an air inlet pipe, the suction end is connected to an air collecting hood through a suction pipe, the air collecting hood is located above the additive barrel, the air outlet end of the vacuum generator is connected to a connecting pipe through an air outlet pipe, and the connecting pipe is connected to a waste oil tank or a low-pressure gas venting system.

[0005] Furthermore, a flow control valve is provided on the air inlet pipe.

[0006] Furthermore, the gas outlet pipe is connected to the underground waste oil tank and the low-pressure gas venting system through a first connecting pipe and a second connecting pipe respectively.

[0007] Furthermore, the instrument air supply pipe, the connecting pipe, the first connecting pipe and the second connecting pipe are all provided with switch valves.

[0008] Furthermore, the instrument air supply pipe and the air inlet pipe, the connecting pipe and the air outlet pipe, and the suction pipe and the air collecting hood are all detachably connected through male and female air pipe joints.

[0009] The beneficial effects of the present invention are:

[0010] 1. This device uses the instrument air service station as the air supply end of the vacuum generator, and the suction port is connected to the gas collecting hood located above the additive barrel through the suction pipe. The gas collecting hood can be used to evacuate the area above the additive barrel to create a micro-negative pressure environment, thereby allowing the gas leaking from the additive barrel to pass through the vacuum generator and enter the underground waste oil tank or low-pressure gas venting system.

[0011] 2. The flow control valve can be used to adjust the instrument air volume in the air inlet pipe, thereby controlling the negative pressure above the additive barrel to adjust according to the actual working environment;

[0012] 3. The instrument air supply pipe and the air inlet pipe, the connecting pipe and the air outlet pipe, and the suction pipe and the air collecting hood are all detachably connected through male and female air pipe joints, which is convenient for assembly and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model

[0014] Among them: 1-instrument air duct network, 2-instrument air supply pipe, 3-first switch valve, 4-air inlet pipe, 5-quick connector ball valve, 6-vacuum generator, 7-suction pipe, 8-gas collecting hood, 9-additive barrel, 10-air outlet pipe, 11-connecting pipe, 12-first connecting pipe, 13-second connecting pipe, 14-second switch valve, 15-third switch valve, 16-fourth switch valve, 17-low-pressure gas venting system, 18-underground waste oil tank. DETAILED DESCRIPTION

[0015] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0016] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the viewing direction or position relationship, and are only for the convenience of describing the utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0017] like Figure 1 The odor elimination device shown for adding additives to a petrochemical device includes an instrument air duct network 1, an air inlet pipe 4, a vacuum generator 6, a suction pipe 7, a gas collecting hood 8, an air outlet pipe 10, a low-pressure gas venting system 17, and an underground waste oil tank 18.

[0018] Specifically, the air inlet end, suction end and air outlet end of the vacuum generator 6 are respectively connected to the air inlet pipe 4, suction pipe 7 and air outlet pipe 10 through quick-connect connectors. The other end of the air inlet pipe 4 is connected to the instrument air supply pipe 2, and the instrument air supply pipe 2 is connected to the instrument air duct network 1; the two ends of the suction pipe 7 are respectively connected to the suction end of the vacuum generator 6 and the air collecting hood 8, the air collecting hood 8 is a conical shell structure, and is located above the additive barrel 9; the two ends of the air outlet pipe 10 are respectively connected to the air outlet end of the vacuum generator 10 and the connecting pipe 11, and the connecting pipe 11 is connected in parallel with a first connecting pipe 12 and a second connecting pipe 13, and the first connecting pipe 12 and the second connecting pipe 13 are respectively connected to the underground waste oil tank 18 and the low-pressure gas venting system 17.

[0019] By utilizing the instrument air in the instrument air duct network 1 as the air supply end of the vacuum generator 10, the suction pipe 7 and the gas collecting hood 8 are used to generate negative pressure and suck in the toxic gas generated when the additive barrel 9 is filled, and then discharged to the underground waste oil tank 18 or the low-pressure gas venting system 17 through the outlet pipe 10 and the connecting pipe 11, thereby reducing the pollution to the environment during the filling process and reducing the potential toxicity to the health of the operators.

[0020] A flow control valve is also provided on the air intake pipe 4. In this embodiment, the flow control valve adopts a quick connector ball valve 5. The quick connector ball valve 5 can be used to adjust the air supply flow on the air intake pipe 4, thereby achieving different sizes of negative pressure at the air collecting hood 8 to adapt to different working environments.

[0021] In this embodiment, the first switch valve 3, the second switch valve 14, the third switch valve 15, and the fourth switch valve 16 are respectively provided on the instrument air supply pipe 2, the connecting pipe 11, the first connecting pipe 12, and the second connecting pipe 13, and the on-off of each gas path is controlled by the switch valve.

[0022] In addition, the air inlet pipe 4 and the instrument air supply pipe 2, the suction pipe 7 and the air collecting hood 8, the air outlet pipe 10 and the air outlet end of the vacuum generator 6 and the connecting pipe 11 are all detachably connected using male and female air pipe joints to facilitate disassembly and assembly between the components.

[0023] When the device is in use, the various components are quickly connected, the first switch valve 3 and the second switch valve 14 are opened, and the air supply volume is controlled by the quick-connect ball valve 5 to generate a negative pressure environment in the gas collecting hood 8. At this time, the liquid extraction tube is inserted into the additive barrel, and the pneumatic diaphragm pump is turned on to add the additive. The toxic and harmful gases generated by the volatilization of the additive during the additive addition process pass through the gas collecting hood 8, the suction pipe 7, and the vacuum generator 6 and then enter the connecting pipe 11 through the outlet pipe 10. The toxic gases are discharged into the underground waste oil tank 18 or the low-pressure gas venting system 17 by selectively opening the third switch valve 15 or the fourth switch valve 16, thereby preventing the toxic gases from escaping into the atmospheric environment.

[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principles of the present invention. These improvements should also be regarded as within the scope of protection of the present invention.

Claims

1. An odor elimination device for adding additives to a petrochemical plant, characterized in that: It includes a vacuum generator, the air inlet end of the vacuum generator is connected to the instrument air supply pipe through the air inlet pipe, the suction end is connected to the wind collecting hood through the suction pipe, the wind collecting hood is located above the additive barrel, the air outlet end of the vacuum generator is connected to the connecting pipe through the air outlet pipe, and the connecting pipe is connected to the underground waste oil tank or the low-pressure gas venting system.

2. The odor elimination device for adding additives to petrochemical equipment according to claim 1, characterized in that: The air inlet pipe is also provided with a flow control valve.

3. The odor elimination device for adding additives to petrochemical equipment according to claim 1, characterized in that: The gas outlet pipe is connected to the underground waste oil tank and the low-pressure gas venting system respectively through a first connecting pipe and a second connecting pipe.

4. The odor elimination device for adding additives to petrochemical equipment according to claim 3, characterized in that: The instrument air supply pipe, the connecting pipe, the first connecting pipe and the second connecting pipe are all provided with switch valves.

5. The odor elimination device for adding additives to petrochemical equipment according to claim 1, characterized in that: The instrument air supply pipe and the air inlet pipe, the connecting pipe and the air outlet pipe, and the suction pipe and the air collecting hood are all detachably connected through air pipe male and female joints.

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