A gas distributor for a chloromethane synthesis reactor

Abstract

This utility model discloses a gas distributor for a chloromethane synthesis reactor. The main support pipe and the main distribution pipe are arranged parallel to each other and positioned below the main distribution pipe. Distribution branch pipes are provided on the main distribution pipe, symmetrically arranged at a 45-degree angle to the horizontal line of the main distribution pipe. A supporting inclined pipe connects the distribution branch pipes to the main support pipe at a 90-degree angle. Both the main distribution pipe and the distribution branch pipes have three rows of distribution holes, arranged on the lower side of the main distribution pipe and the distribution branch pipes. Two rows are symmetrically arranged at a 45-degree angle to the horizontal line of the main distribution pipe and the distribution branch pipes, and one row is arranged at a 90-degree angle to the horizontal line of the main distribution pipe and the distribution branch pipes. This utility model's gas distributor device has a simple structure, uniform stress on the distribution pipes, and a firm connection. It requires fewer pipe openings at the bottom of the equipment, reducing the risk of material leakage. The steel-lined support rods with a double-layer anti-corrosion design have strong corrosion resistance, extending the service life of components and the equipment maintenance cycle.

Description

Technical Field

[0001] This utility model belongs to the field of chemical production technology and relates to a gas distributor for a chloromethane synthesis reactor. Background Technology

[0002] Currently, organosilicon chloromethane synthesis units primarily employ either gas-liquid phase catalytic or gas-liquid phase non-catalytic methods. To ensure gas-liquid reaction contact, a distributor is required within the reactor. At present, the widely adopted distributor design involves inserting multiple distribution pipes and support pipes from the bottom, necessitating numerous openings at the bottom of the synthesis reactor, increasing the risk of leakage. Some companies use a design where distribution pipes are inserted from the top or side to the bottom, with further distribution pipes designed at the bottom. In this approach, under conditions of high-flow-rate hydrogen chloride and methanol feed, the vertical pipe connections of the distributor bear not only the weight of the bottom distributor but also the pressure impact of the materials, making the sealing surfaces prone to leakage, resulting in low reaction conversion rates and high acid values ​​in the outlet gas. Finally, installing steam purging and water cleaning pipelines at the inlet of the main distribution pipe facilitates purging and cleaning of the distribution pipe during maintenance, quickly removing sludge from the pipe and improving maintenance efficiency and quality. Summary of the Invention

[0003] The purpose of this invention is to solve the problems of excessive distributor port design and complex distributor structure in existing distributor technology solutions, which lead to distributor leakage and low reaction conversion rate. Therefore, a new gas distribution device for chloromethane reactors is proposed.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The gas distribution device for a chloromethane reactor includes a main support pipe, a main distribution pipe, branch distribution pipes, a connecting support pipe, and an inclined support pipe. The main support pipe is made of steel lined with PTFE, with the outer layer made of multi-layer PTFE fiber winding and sintering process, and the base layer is made of carbon steel.

[0006] The main support pipe is arranged parallel to the main distribution pipe and positioned below the main distribution pipe, maintaining a distance of approximately 1 meter from it. At least two supporting connecting pipes connect the main support pipe and the main distribution pipe. The branch distribution pipe is arranged symmetrically with the main distribution pipe at a 30-45 degree angle to the horizontal line. A supporting inclined pipe connects the branch distribution pipe to the main support pipe, forming a 90-120 degree angle with the branch distribution pipe. Both the main distribution pipe and the branch distribution pipe have three rows of distribution holes, located on their lower sides. Two rows are symmetrically arranged at a 30-45 degree angle to the horizontal line of the main distribution pipe and branch distribution pipe, and one row is arranged at a 90-120 degree angle to the horizontal line.

[0007] Furthermore, the main distribution pipe is connected inside the vessel using a slip-on flange, and at the pipe opening, it is connected to the external pipeline using a threaded flange. The neck of the threaded flange has multiple internal threaded holes, on which bolts are installed to tightly connect the main distribution pipe and the threaded flange.

[0008] Furthermore, the inclined support tube and the main support tube, as well as the connecting support tube and the main support tube, are all connected using connector one. A PTFE gasket is installed inside connector one to adjust the connection gap and ensure a secure connection.

[0009] Furthermore, the distribution branch pipe and the supporting inclined pipe are connected by a second connector, and a PTFE gasket is provided inside the second connector to adjust the connection gap and ensure a firm connection.

[0010] Furthermore, both the main distribution pipe and the branch distribution pipe in the special connector are threaded.

[0011] Furthermore, the distribution branch pipes and the distribution main pipe are connected by threads. Both the distribution main pipe and the distribution branch pipes are made of high-temperature resistant PTFE material with a wall thickness of not less than 10mm, and are equipped with steel-lined PTFE supports to ensure that the pipes do not deform at high temperatures.

[0012] Furthermore, both the support inclined tube and the support connecting tube are made of PTFE rods to ensure that the support has sufficient strength.

[0013] Compared with the prior art, the present invention provides a gas distribution device for a chloromethane reactor, which has the following beneficial effects:

[0014] This utility model gas distributor device has its distribution pipe and support rod arranged in parallel, which is simple in structure, the distribution pipe is subjected to uniform force, the number of pipe openings at the bottom of the equipment is reduced, the risk of material leakage is reduced, and it can operate stably for a long time under high temperature conditions.

[0015] The main distribution pipe is connected at the equipment inlet using threaded flanges and radial bolts to ensure a firm connection and overcome the problem of incomplete reaction caused by component connection parts easily falling off during high-flow gas impact.

[0016] The steel-lined support rod with a double-layer anti-corrosion design has strong corrosion resistance, which extends the service life of components and the maintenance cycle of equipment.

[0017] The three rows of distribution holes in the distribution pipe and the symmetrical arrangement of the distribution branch pipes and the distribution main pipe at a 45-degree angle to the horizontal line can minimize the risk of glue buildup inside the distribution pipes and clogging the distribution pipes or distribution holes.

[0018] A steam pipe (6) and a water cleaning pipe (7) are installed at the inlet of the main distribution pipe to facilitate purging and cleaning of the distribution pipe during maintenance, thereby improving maintenance efficiency and quality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the gas distribution device in the chloromethane reactor of this utility model.

[0020] Figure 2 This is a schematic diagram showing the connection between the main distribution pipe and the main support pipe in the gas distribution device of the chloromethane reactor of this utility model.

[0021] Figure 3 This is a schematic diagram of the connection between the main support pipe and the distribution branch pipe in the gas distribution device of the chloromethane reactor of this utility model.

[0022] Figure 4 This is a schematic diagram of the connection of the main distribution pipe in the gas distribution device of the chloromethane reactor of this utility model.

[0023] Figure 5 This invention relates to the arrangement of the main distribution pipe and branch pipe distribution holes in the gas distribution device of the chloromethane reactor.

[0024] 1: Support main pipe; 2: Distribution main pipe; 3: Distribution branch pipe; 4: Support connecting pipe; 5: Support inclined pipe; 6: Steam purging pipeline; 7: Water cleaning pipeline; 8-1: Connector one; 8-2: Connector two; 9: Gasket; 10: Threaded flange; 11: Flange neck bolt; 12: Distribution hole; a: Gas inlet; b: Upper part; c: Lower part; i: Threaded connection. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model.

[0026] In this embodiment, the gas distribution device for the chloromethane reactor includes a main support pipe 1. The main support pipe 1 is made of steel lined with PTFE, with an outer PFA protective layer of at least 3mm thickness, an inner layer made using a multi-layer PTFE fiber winding and sintering process, and a base layer made of carbon steel. The use of carbon steel as the base material of the main support pipe ensures its strength. The inner anti-corrosion layer, made using a PFA outer protective layer and a multi-layer PTFE fiber winding and sintering process, greatly increases the corrosion resistance of the support pipe and extends the service life of the components. The main support pipe 1 is arranged parallel to the distribution pipe 2 and is positioned below the distribution pipe 2, maintaining a distance of approximately 1 meter from the distribution pipe. There are at least two supporting connecting pipes 4 between the main support pipe 1 and the distribution pipe 2. The parallel arrangement of the support pipe and the distribution pipe vertically is simple in structure. The number of supporting connecting pipes can be increased according to the equipment size to maximize the support strength of the distribution pipe and prevent deformation of the distribution pipe under gravity due to insufficient support.

[0027] The main distribution pipe 2 is connected to the reactor using a loose flange inside, and to the external pipeline using a threaded flange at the pipe opening. The neck of the threaded flange has multiple internal threaded holes, on which bolts are installed to tightly connect the main distribution pipe and the threaded flange. Because the main distribution pipe needs to withstand significant gas impact, it is reinforced with a threaded flange and radial bolts, enhancing the connection strength at the pipe opening and ensuring the distributor structure remains intact and the seal is effective even under significant gas impact.

[0028] Steam line 6 and water cleaning line 7 are installed at the inlet of the main distribution pipe to facilitate purging and cleaning of the distribution pipe during maintenance, thereby improving maintenance efficiency and quality.

[0029] A distribution main pipe 2 is equipped with a distribution branch pipe 3, which is symmetrically arranged at a 45-degree angle to the horizontal line of the distribution main pipe 2. A supporting inclined pipe 5 connects the distribution branch pipe to the supporting main pipe, and the supporting inclined pipe 5 is connected to the distribution branch pipe 3 at a 90-degree angle. Both the distribution main pipe and the distribution branch pipe have three rows of distribution holes, arranged on the lower side of the distribution main pipe and the distribution branch pipe. Two rows are symmetrically arranged at a 45-degree angle to the horizontal line of the distribution main pipe and the distribution branch pipe, and one row is arranged at a 90-degree angle to the horizontal line of the distribution main pipe and the distribution branch pipe. The symmetrical design ensures uniform stress on the distribution pipe, and the downward arrangement of the distribution holes increases the gas-liquid contact time, ensuring complete reaction of chloromethane and improving the reaction efficiency of chloromethane.

[0030] The support inclined pipe 5 and the support main pipe 1, as well as the support connecting pipe 4 and the support main pipe 1, are all connected using special connector 8-1, which increases the fastening force and prevents loosening.

[0031] The support connecting pipe 4 and the main distribution pipe 2, as well as the main distribution pipe 2 and the branch distribution pipe 3, are all connected by threads, which makes installation convenient, disassembly easy, and maintenance convenient.

[0032] Both the main distribution pipe 2 and the branch distribution pipe 3 are made of high-temperature resistant PTFE material with a wall thickness of not less than 10mm. They are equipped with steel-lined PTFE supports to ensure that the pipes do not deform at high temperatures.

[0033] The distribution branch pipe 3 and the supporting inclined pipe 5 are connected by a connector 8-2. A PTFE gasket 9 is provided inside the connector 8-2 to adjust the connection gap and ensure a firm connection.

[0034] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A gas distributor for a chloromethane synthesis reactor, characterized in that, Includes main support pipe (1), main distribution pipe (2), branch distribution pipe (3), support connecting pipe (4), support inclined pipe (5), steam pipeline (6), water cleaning pipeline (7), connector one (8-1), connector two (8-2); The support main tube (1) and the distribution main tube (2) are arranged in parallel and are located below the distribution main tube (2); The distribution branch pipe (3) and the distribution main pipe (2) are arranged symmetrically at a horizontal angle of 30-45°. The main distribution pipe (2) and the branch distribution pipe (3) are each provided with three rows of distribution holes. The distribution holes are arranged on the lower side of the main distribution pipe (2) and the branch distribution pipe (3). Two rows are arranged symmetrically at 30-45° on the horizontal line of the main distribution pipe (2) and the branch distribution pipe (3), and one row is arranged at 90-120° on the horizontal line of the main distribution pipe (2) and the branch distribution pipe (3).

2. The gas distributor for the chloromethane synthesis reactor according to claim 1, characterized in that, The support main tube (1) and the distribution main tube (2) are kept at a distance of 1-1.5 meters.

3. The gas distributor for the chloromethane synthesis reactor according to claim 1, characterized in that, There are at least two support connecting pipes (4) between the support main pipe (1) and the distribution main pipe (2).

4. The gas distributor for the chloromethane synthesis reactor according to claim 1, characterized in that, The distribution branch pipe (3) is connected to the main support pipe (1) by a support inclined pipe (5).

5. The gas distributor for the chloromethane synthesis reactor according to claim 1, characterized in that, The distribution main pipe (2) is connected to the reactor using a slip-on flange inside the reactor and to the external pipeline using a threaded flange at the pipe opening. The neck of the threaded flange is provided with multiple internal threaded holes, and bolts are installed on the internal threaded holes to tightly connect the distribution main pipe (2) and the threaded flange.

6. The gas distributor for the chloromethane synthesis reactor according to claim 1, characterized in that, The distribution main inlet is equipped with a steam pipe (6) and a water cleaning pipe (7) to facilitate purging and cleaning of the distribution pipe during maintenance.

7. The gas distributor for the chloromethane synthesis reactor according to claim 1, characterized in that, The support inclined tube (5) and the support main tube (1), and the support connecting tube (4) and the support main tube (1) are all connected by a connector (8-1); a PTFE pad (9) is provided in the connector (8-1) to adjust the connection gap and ensure a firm connection.

8. The gas distributor for the chloromethane synthesis reactor according to claim 1, characterized in that: The distribution branch pipe (3) and the support inclined pipe (5) are connected by a connector two (8-2), and a PTFE gasket (9) is provided in the connector two (8-2) to adjust the connection gap and ensure a firm connection.

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