A multi-purpose multi-point temperature measurement pipe for polymerization reaction

Abstract

A multi-purpose multi-point temperature measuring pipe for polymerization reaction, comprising: a feed pipe; a temperature sleeve, which is sleeved outside the feed pipe and coaxially arranged with the feed pipe, a temperature measuring space is formed between the inner wall of the temperature sleeve and the outer wall of the feed pipe, a plurality of temperature measuring points are arranged on the temperature sleeve, each of the temperature measuring points is installed with a heat conducting joint, and the heat conducting joint extends into the temperature measuring space; and a thermometer joint, which is adapted to a thermocouple, the thermometer joint is installed at one end of the temperature sleeve through an end plate, the thermometer joint is connected to the heat conducting joint through a temperature measuring conduit, and the temperature measuring conduit is located in the temperature measuring space. The present invention is suitable for polymerization reaction devices of polyethylene and polypropylene, can ensure that the temperature measured value is the same as the internal temperature of the reactor, effectively reduce the stress of the feed pipe at the installation location, and ensure the safe operation of the equipment under the premise of meeting the requirements of the polymerization reaction.

Description

Technical Field

[0001] The invention relates to a polymerization reaction production device, in particular to a multi-purpose multi-point temperature measuring pipe suitable for the polymerization reaction of polyethylene and polypropylene. Background Art

[0002] Polyethylene and polypropylene are polymers formed by addition polymerization. They are widely used in various industries such as clothing, automobiles, medical equipment, transportation pipelines, chemical pipelines, etc. Polymerization reaction is the process of converting low molecular weight monomers into high molecular weight polymers. During the polymerization process, there are monomers, solvents, initiators, catalysts and other substances in the reaction vessel. The reaction process is complicated, so the control of the working conditions in the reactor during the polymerization reaction has a direct impact on the reaction results.

[0003] In engineering, polymerization reactors have been successfully applied in polyolefin fields such as polypropylene and polyethylene, and are the core equipment in polyolefin projects. During polymerization, the monomolecular medium inside the container undergoes addition polymerization under the conditions of catalyst, pressure, temperature, etc. During this process, the protrusions and uneven parts in the internal structure of the reactor may cause local polymerization reactions, resulting in material accumulation, affecting the normal use of the equipment. Therefore, the internal structure of the reactor needs to be optimized to prevent local polymerization reactions. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a multi-purpose multi-point temperature measuring pipe for polymerization reaction in order to meet the requirements of polymerization reaction.

[0005] In order to achieve the above-mentioned object, the present invention provides a multi-purpose multi-point temperature measuring pipe for polymerization reaction, which comprises:

[0006] Feed pipe;

[0007] A temperature sleeve is sleeved outside the feed pipe and is coaxially arranged with the feed pipe, a temperature measuring space is formed between the inner wall of the temperature sleeve and the outer wall of the feed pipe, a plurality of temperature measuring points are arranged on the temperature sleeve, each of the temperature measuring points is installed with a heat conducting joint, and the heat conducting joint extends into the temperature measuring space;

[0008] The thermometer joint is adapted to the thermocouple, the thermometer joint is installed at one end of the temperature sleeve through an end plate, the thermometer joint is connected to the heat-conducting joint through a temperature measuring conduit, and the temperature measuring conduit is located in the temperature measuring space.

[0009] The above-mentioned multi-purpose multi-point temperature measuring tube for polymerization reaction, wherein the heat conductive joint is a silver joint, one end of the temperature measuring tube is connected to the thermometer joint, and the other end of the temperature measuring tube is connected to the silver joint through the temperature measuring joint.

[0010] The above-mentioned multi-purpose multi-point temperature measuring pipe for polymerization reaction further comprises a base, and one end of the temperature sleeve is installed on the base through a flange cover.

[0011] The above-mentioned multi-purpose multi-point temperature measuring connecting pipe for polymerization reaction, wherein the temperature sleeve is also sleeved with a fixed pipe, the fixed pipe is coaxially arranged with the temperature sleeve, and one end of the fixed pipe abuts against the flange cover.

[0012] In the above-mentioned multi-purpose multi-point temperature measuring connecting pipe for polymerization reaction, a limiting block is arranged on the outer wall of the fixed pipe, and the limiting block abuts against the outer wall of the fixed pipe and the base respectively.

[0013] In the above-mentioned multi-purpose multi-point temperature measuring connecting pipe for polymerization reaction, a supporting block is further arranged between the end of the fixed pipe and the temperature sleeve.

[0014] The above-mentioned multi-purpose multi-point temperature measuring connecting pipe for polymerization reaction, wherein the fixed pipe is provided with a plurality of fixed pipe vents.

[0015] The above-mentioned multi-purpose multi-point temperature measuring connecting pipe for polymerization reaction, wherein the temperature sleeve is provided with a plurality of temperature sleeve vents, and the temperature sleeve vents and the fixed pipe vents are respectively arranged at intervals and staggered.

[0016] The above-mentioned multi-purpose multi-point temperature measuring connecting pipe for polymerization reaction, wherein a feed port flange is also installed at one end of the feed connecting pipe, and the feed port flange is coaxially arranged with the feed connecting pipe.

[0017] The above-mentioned multi-purpose multi-point temperature measuring pipe for polymerization reaction, wherein a lifting lug is also arranged on one side of the flange cover close to the feed inlet flange.

[0018] The technical effects of the present invention are:

[0019] The invention adapts to the needs and future trends of polymerization reaction production. The multi-purpose multi-point temperature measuring pipe is suitable for polymerization reaction devices of polyethylene and polypropylene and can meet the needs of polymerization reaction.

[0020] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0022] Figure 2 for Figure 1 A magnified view of part A;

[0023] Figure 3 for Figure 1 A magnified view of part B;

[0024] Figure 4 for Figure 1 Enlarged view of part C;

[0025] Figure 5 for Figure 1 Enlarged view of part D.

[0026] Among them, the reference numerals

[0027] 1 Inlet flange

[0028] 2 Feed pipe

[0029] 3 Lifting ears

[0030] 4 Fasteners

[0031] 5 Flange cover

[0032] 6 Base

[0033] 7 Limit block

[0034] 8 Fixed pipe vent

[0035] 9 Fixed pipe

[0036] 10 Temperature measuring connector

[0037] 11 Silver Joint

[0038] 12 Temperature sleeve

[0039] 13 Temperature measuring catheter

[0040] 14 Support block

[0041] 15 End plate

[0042] 16 Thermometer connector

[0043] 17 Temperature sleeve vent DETAILED DESCRIPTION

[0044] The structural principle and working principle of the present invention are described in detail below in conjunction with the accompanying drawings:

[0045] See also Figure 1 , Figure 1The schematic diagram of the structure of one embodiment of the present invention. The multi-purpose multi-point temperature measuring pipe for polymerization reaction of the present invention comprises: a feed pipe 2; a temperature sleeve 12, which is sleeved outside the feed pipe 2 and is coaxially arranged with the feed pipe 2, and a temperature measuring space is formed between the inner wall of the temperature sleeve 12 and the outer wall of the feed pipe 2, and a plurality of temperature measuring points are arranged on the temperature sleeve 12, each of which is equipped with a heat conducting joint, and the heat conducting joint extends into the temperature measuring space; a thermometer joint 16, which is adapted to a thermocouple and is convenient for installing a temperature measuring thermocouple, and the thermometer joint 16 is installed at one end of the temperature sleeve 12 through an end plate 15 (see Figure 5 ), the thermometer joint 16 is connected to the thermal joint through a temperature measuring conduit 13, and the temperature measuring conduit 13 is located in the temperature measuring space. Wherein, the thermal joint is preferably a silver joint 11 (see Figure 3 ), one end of the temperature measuring conduit 13 is connected to the thermometer joint 16, and the other end of the temperature measuring conduit 13 is connected to the silver joint 11 through the temperature measuring joint 10. A feed port flange 1 may also be installed at one end of the feed pipe 2, and the feed port flange 1 is coaxially arranged with the feed pipe 2.

[0046] The temperature sleeve 12 of this embodiment is also covered with a fixed tube 9, which is coaxially arranged with the temperature sleeve 12, and one end of the fixed tube 9 abuts against the flange cover 5. The outer wall of the fixed tube 9 is provided with a limit block 7 to prevent the root of the feed pipe 2 from being subjected to excessive stress due to internal load. The limit block 7 abuts against the outer wall of the fixed tube 9 and the base 6 respectively. A support block 14 is also provided between the end of the fixed tube 9 and the temperature sleeve 12 (see Figure 4 The fixed pipe 9 is provided with a plurality of fixed pipe vent holes 8, and the temperature sleeve 12 is provided with a plurality of temperature sleeve vent holes 17 (see Figure 2 ), the temperature sleeve vent holes 17 and the fixed pipe vent holes 8 are arranged at intervals and staggered, and the fixed pipe vent holes 8 and the temperature sleeve vent holes 17 can ensure the pressure balance inside and outside the pipe.

[0047] In this embodiment, a base 6 may also be included, one end of the temperature sleeve 12 is installed on the base 6 through a flange cover 5, the flange cover 5 is installed on the base 6 through a fastener 4, and a lifting ear 3 is also provided on the side of the flange cover 5 close to the feed port flange 1. The lifting ear 3 can be welded to the flange cover 5 to facilitate the disassembly and assembly of the multi-point temperature measuring pipe.

[0048] When the equipment is running, the material enters the equipment from the feed port flange 1 through the feed pipe 2. A temperature measuring joint 10, a silver joint 11, a temperature measuring conduit 13 and a thermometer joint 16 are arranged between the feed pipe 2 and the temperature sleeve 12. The thread of the thermometer joint 16 matches the thread of the thermocouple. The temperature measuring conduit 13 can make the multiple temperature measuring points distributed in an annular shape on the end plate 15 at the same angle of the temperature sleeve 12, and it is also convenient for the installation and replacement of the thermocouple. The silver joint 11 is in contact with the temperature measuring joint 10 and the temperature sleeve 12. The excellent thermal conductivity of silver can ensure that the temperature measurement value is the same as the internal temperature of the reactor. The feed pipe 2 in the reactor will be subjected to the combined force of the internal material and pressure. The limit block 7 and the fixed pipe 9 can effectively reduce the stress of the pipe at the root of the flange cover 5 to ensure the safe operation of the equipment.

[0049] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A multi-purpose multi-point temperature measuring tube for polymerization reaction, characterized in that: include: Feed pipe; A temperature sleeve is sleeved outside the feed pipe and is coaxially arranged with the feed pipe, a temperature measuring space is formed between the inner wall of the temperature sleeve and the outer wall of the feed pipe, a plurality of temperature measuring points are arranged on the temperature sleeve, each of the temperature measuring points is installed with a heat conducting joint, and the heat conducting joint extends into the temperature measuring space; A thermometer joint, adapted to the thermocouple, the thermometer joint being installed at one end of the temperature sleeve through an end plate, the thermometer joint being connected to the heat-conducting joint through a temperature measuring conduit, and the temperature measuring conduit being located in the temperature measuring space; as well as A base, one end of the temperature sleeve is mounted on the base through a flange cover; The heat-conducting joint is a silver joint to ensure that the temperature measured is the same as the temperature inside the reactor. One end of the temperature measuring conduit is connected to the thermometer joint, and the other end of the temperature measuring conduit is connected to the silver joint through the temperature measuring joint. The temperature measuring conduit enables multiple temperature measuring points to be located at the same angle of the temperature sleeve, and facilitates the installation and replacement of the thermocouple. A fixed tube is also sleeved outside the temperature sleeve, the fixed tube is coaxially arranged with the temperature sleeve, and one end of the fixed tube abuts against the flange cover; a limit block is arranged on the outer wall of the fixed tube, and the limit block abuts against the outer wall of the fixed tube and the base respectively, so as to prevent the root of the feed pipe from being subjected to excessive stress due to internal load; The fixed pipe is provided with a plurality of fixed pipe vents; the temperature sleeve is provided with a plurality of temperature sleeve vents, and the temperature sleeve vents and the fixed pipe vents are arranged at intervals and staggered to ensure pressure balance inside and outside the connecting pipe.

2. The multi-purpose multi-point temperature measuring pipe for polymerization reaction as claimed in claim 1, characterized in that: A support block is also provided between the end of the fixed pipe and the temperature sleeve.

3. The multi-purpose multi-point temperature measuring pipe for polymerization reaction according to claim 1, characterized in that: A feed inlet flange is also installed at one end of the feed pipe, and the feed inlet flange is coaxially arranged with the feed pipe.

4. The multi-purpose multi-point temperature measuring pipe for polymerization reaction as claimed in claim 3, characterized in that: A lifting lug is also provided on one side of the flange cover close to the feed inlet flange.

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