Combined coke filtering system for removing naphthalene in methanol workshop of chemical plant
By adding valves and eight -character blind plates to the import and export pipes of the coke filter, the online replacement of the coke filter is achieved, solving the problem that the existing technology cannot be replaced online, which causes the oil and water to bring in. Life life.
Patent Information
- Application Number
- CN202420931275.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The existing coke filter cannot be replaced online, resulting in a large amount of oil and water being brought into the subsequent system when the coke is adsorbed saturated, affecting the adsorption effect and service life of the adsorbent.
A combined coke filtration system is designed. By adding two valves and eight -character blind plates to the import and export pipes of the coke filter, it allows to replace the coke filter one by one when the production system is not stopped.
The online replacement of the coke filter is realized, the coking effect is improved, the oil and water are prevented from being brought into the subsequent system, the service life of the adsorbent is extended, and the long -term operation of the production system is stable.
Smart Images
Figure CN222400765U_ABST
Abstract
Description
[Technical field]
[0001] The utility model belongs to the technical field of chemical naphthalene removal, and in particular relates to a combined coke filtering system for removing naphthalene from a methanol workshop of a chemical plant. [Background technology]
[0002] The function of the coke filter at the TSA-naphthalene removal station in the methanol workshop of a chemical plant is to use coke to absorb oil and water in the coal gas, reduce the amount of oil and water brought into the subsequent production system, and protect the adsorbent and catalyst of the subsequent system.
[0003] However, because there is only one valve at the inlet and outlet of the coke filter, it is impossible to cut out the system for online coke replacement during production operation. The coke can only be replaced every time the system is shut down for major inspections. As a result, when the coke in the coke filter is saturated with adsorption during production operation, a large amount of oil and water will be brought into the subsequent system, affecting the adsorption effect and service life of the adsorbent in the subsequent system. [Utility Model Content]
[0004] The utility model aims to provide a combined coke filtration system for removing naphthalene in a methanol workshop of a chemical plant, so as to solve the problem that the existing coke filter cannot be replaced online, thus affecting the adsorption effect and service life of the subsequent system adsorbent.
[0005] The utility model adopts the following technical scheme: a combined coke filtering system for removing naphthalene in a methanol workshop of a chemical plant, comprising a coke filter, the top of the coke filter is connected with an outlet pipeline, and the middle of the coke filter is connected with an inlet pipeline; an outlet first valve and an outlet second valve are arranged in series on the outlet pipeline along the direction of gas outlet, and an inlet first valve and an inlet second valve are arranged in series on the inlet pipeline along the direction of gas inlet; an eight-shaped blind plate is arranged on the outlet first valve and the inlet second valve;
[0006] There are three or more coke filters arranged in parallel;
[0007] Among them, the inlet pipeline of each coke filter is connected to the input main pipe for conveying coal gas in the raw gas compressor, and the outlet pipeline of each coke filter is connected to the output main pipe for conveying coal gas to the adsorption tower.
[0008] Furthermore, a sewage discharge pipeline is connected to the bottom of the coke filter, and a sewage discharge valve is arranged on the sewage discharge pipeline.
[0009] Furthermore, a shower guide valve is provided between the two outlet first-way valves and the outlet second-way valve, and a shower guide valve is provided between the two inlet first-way valves and the inlet second-way valve.
[0010] The beneficial effects of the utility model are as follows: the utility model adds two valves and an eight-shaped blind plate to the inlet and outlet pipes of the coke filter, thereby facilitating the coke filters to be cut out of the system one by one and replace the coke in the filter when the production system is not shut down, thereby improving the tar removal effect of the coke filter and preventing oil and water from being brought into the subsequent system to affect the adsorption effect and service life of the adsorbent in the subsequent system, thereby ensuring the long-term stable operation of the production system.
Brief Description of the Drawings
[0011] Figure 1 The utility model is a system connection schematic diagram of a combined coke filtration system for removing naphthalene in a methanol workshop of a chemical plant.
[0012] Among them, 1. coke filter, 2. outlet valve, 3. outlet valve, 4. inlet valve, 5. inlet valve, 6. figure eight blind plate, 7. shower valve, 8. drain valve, 9. input main pipe, 10. output main pipe. [Specific implementation method]
[0013] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.
[0014] The present invention provides a combined coke filtration system for removing naphthalene from a methanol workshop of a chemical plant. Figure 1 As shown, it comprises a coke filter 1, the top of the coke filter 1 is connected to an outlet pipeline, and the middle of the coke filter 1 is connected to an inlet pipeline; an outlet first valve 2 and an outlet second valve 3 are arranged in series on the outlet pipeline along the direction of gas outlet, and an inlet first valve 4 and an inlet second valve 5 are arranged in series on the inlet pipeline along the direction of gas inlet; an eight-shaped blind plate 6 is arranged on both the outlet first valve 2 and the inlet second valve 5;
[0015] The coke filters 1 are three or more arranged in parallel;
[0016] Among them, the inlet pipeline of each coke filter 1 is connected to the input main pipe 9 for conveying coal gas in the raw gas compressor, and the outlet pipeline of each coke filter 1 is connected to the output main pipe 10 for conveying coal gas to the adsorption tower.
[0017] In some embodiments, a sewage pipeline is connected to the bottom of the coke filter 1, and a sewage valve 8 is arranged on the sewage pipeline.
[0018] In some embodiments, a drainage valve 7 is provided between the two outlet first-way valves 2 and the outlet second-way valves 3 , and a drainage valve 7 is provided between the two inlet first-way valves 4 and the inlet second-way valves 5 .
[0019] like Figure 1As shown, taking the parallel operation of three coke filters as an example, the method of using the combined coke filtration system for removing naphthalene in the methanol workshop of a chemical plant of the utility model is as follows:
[0020] During normal operation, the outlet first valve 2, the outlet second valve 3, the inlet first valve 4 and the inlet second valve 5 of the three coke filters 1 are fully opened, the drainage valve 7 is closed, and the two eight-shaped blind plates 6 are in an open state.
[0021] When a coke filter 1 needs to be cut out, the outlet valve 2, the outlet valve 3, the inlet valve 4 and the inlet valve 5 are all closed, and the drain valve 7 is opened to release the pressure; the remaining two coke filters 1 are operated in parallel; after the cut coke filter 1 is depressurized, the two eight-shaped blind plates 6 are switched to the closed state. The closing of the eight-shaped blind plates 6 can block the inlet and outlet pipelines, which is convenient for online replacement of the filler after blocking.
[0022] After the cut coke filter 1 is isolated from the production system, the discharge hole and the manhole of the coke filter 1 are opened to replace the filler, and the remaining two coke filters 1 can continue to operate in parallel.
[0023] The utility model adds two valves and an eight-shaped blind plate to the inlet and outlet pipes of the coke filter, thereby facilitating the coke filters to be cut out of the system one by one and replace the coke in the filter when the production system is not shut down, thereby improving the tar removal effect of the coke filter and preventing oil and water from being brought into the subsequent system to affect the adsorption effect and service life of the adsorbent in the subsequent system, thereby ensuring the long-term stable operation of the production system.
Claims
1. A combined coke filtration system for removing naphthalene from a methanol workshop in a chemical plant, characterized in that: The invention comprises a coke filter (1), wherein the top of the coke filter (1) is connected to an outlet pipeline, and the middle of the coke filter (1) is connected to an inlet pipeline; an outlet first valve (2) and an outlet second valve (3) are arranged in series on the outlet pipeline along the gas outlet direction, and an inlet first valve (4) and an inlet second valve (5) are arranged in series on the inlet pipeline along the gas inlet direction; an eight-shaped blind plate (6) is arranged on both the outlet first valve (2) and the inlet second valve (5); The coke filters (1) are three or more arranged in parallel; The inlet pipeline of each coke filter (1) is connected to an input main pipe (9) for conveying coal gas from a raw gas compressor, and the outlet pipeline of each coke filter (1) is connected to an output main pipe (10) for conveying coal gas to an adsorption tower.
2. The combined coke filtration system for removing naphthalene in a methanol workshop of a chemical plant as claimed in claim 1, characterized in that: The bottom of the coke filter (1) is connected to a sewage discharge pipeline, and a sewage discharge valve (8) is arranged on the sewage discharge pipeline.
3. The combined coke filtration system for removing naphthalene from a methanol plant in a chemical plant as claimed in claim 1 or 2, characterized in that: A shower guide valve (7) is provided between the two outlet first-way valves (2) and the outlet second-way valves (3), and a shower guide valve (7) is provided between the two inlet first-way valves (4) and the inlet second-way valves (5).