CN217940138U

CN217940138U - Methyl chloroformate production section graphite heat exchanger

Info

Publication number: CN217940138U
Application number: CN202221577670.6U
Authority: CN
Inventors: 江益平; 锁小俊; 汪根; 徐志宏; 李俊; 李鹤
Original assignee: Ningxia Xin'an Technology Co ltd
Current assignee: Ningxia Xin'an Technology Co ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2022-12-02
Anticipated expiration: 2032-06-23

Abstract

The utility model discloses a methyl chloroformate production section graphite heat exchanger, including the reaction section, the changeover portion, ejection of compact section and sealed lid, this methyl chloroformate production section graphite heat exchanger, through installing the changeover portion additional, when dismantling and overhaul, through dismantling first nut, the ejection of compact section can be taken off to the second nut, dismantle first nut, the second nut, the reaction section can be taken off to the third nut, when dismantling ejection of compact section and overhaul inside, thereby because sealed pad bears the graphite block and make the graphite block can not drop in the changeover portion, and transition ring top bottom sets firmly first spring and transition ring top and sets firmly the second spring, dismantling first nut, behind the second nut, first spring self restoring force drives ejection of compact section from the outside roll-off of four-section screw rod, dismantling first nut, the second nut, behind the third nut, second spring self restoring force drives the changeover portion and drives the outside roll-off of four-section screw rod, the mesh of conveniently dismantling and overhauing has been reached.

Description

Methyl chloroformate production section graphite heat exchanger

Technical Field

The utility model relates to a graphite heat exchanger technical field specifically is a methyl chloroformate production section graphite heat exchanger.

Background

Methyl chloroformate is an organic compound, is a colorless transparent liquid, has pungent odor, is highly toxic, is insoluble in water, and is soluble in most organic solvents such as benzene, methanol, ether, ethanol, etc.

The reactor is a device which is commonly used in chemical production and is used for reacting two or more materials under certain pressure and certain temperature, is commonly used for gas and liquid countercurrent contact reaction, adopts a through hole graphite heat exchanger form for a lipid product reactor, adopts tetrafluoro material between the graphite block at the lowest layer of a reaction section and the end surface of the graphite block at the uppermost layer of a discharge section for plane sealing, and fastens and seals the discharge section integrally by a carbon steel ring and a large flange of a cylinder body of the reaction section through bolts. Regular overhaul needs to check that reaction section gas distribution pipe distributes the hole and blocks up, the intact condition of gas distribution pipe to graphite heat exchanger, when unloading material section graphite piece, reaction section graphite piece is because of losing the lower part and supporting whole landing, consequently need hang down whole platform equipment during the maintenance, need just can go on with the help of the jack-up machinery, hoist again after the maintenance and go on the installation position, so provided a methyl chloroformate production section graphite heat exchanger and solved the above-mentioned problem that proposes.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a methyl chloroformate production section graphite heat exchanger to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a methyl chloroformate production section graphite heat exchanger, includes reaction section, changeover portion, ejection of compact section and sealed lid, connect through four-section screw rod in order can dismantling the connected mode between reaction section, changeover portion, ejection of compact section and the sealed lid, reaction section, changeover portion and the inside sealed installation space that forms of ejection of compact section, ejection of compact section and the inside sealed accommodation space that forms of sealed lid, the bottom clamps has the graphite piece in the sealed installation space, ejection of compact section inside clamps has the fixed plate, the fixed plate top sets firmly the gas distribution pipe that a plurality of quantities communicate to the fixed plate bottom, graphite piece inside sets firmly the heat-transfer pipe that extends to ejection of compact section inside through the gas distribution pipe.

As a further aspect of the present invention: the four-section screw rod is divided into four sections, the outer diameters of the four sections are sequentially reduced along the axial direction of the reaction section and the discharge section, and the outer diameters of the four sections are respectively 27mm, 24mm, 22mm and 19mm.

As a further aspect of the present invention: the reaction section and the transition section are in threaded connection through a four-section screw rod, a fourth nut and a third nut, wherein the four-section screw rod is matched with the transition section, the fourth nut is 27mm in inner diameter, and the third nut is 24mm in inner diameter.

As the utility model discloses further scheme again: the transition section is in threaded connection with the discharging section through a four-section screw and a second nut, wherein the four-section screw is matched with the discharging section, and the inner diameter of the second nut is 22 mm.

As a further aspect of the present invention: the discharging section is in threaded connection with the sealing cover through a four-section screw and a first nut with the inner diameter being 19mm, wherein the four-section screw is mutually matched with the first nut.

As the utility model discloses further scheme again: the transition section is composed of a transition ring and a sealing gasket, the top of the sealing gasket is provided with a protrusion, the bottom of the graphite block is provided with a groove matched with the protrusion, and the graphite block is clamped with the inner part of the reaction section through the sealing gasket.

As the utility model discloses further scheme again: and a sealed installation space is formed inside the reaction section, the transition ring and the discharge section through a sealing gasket.

As a further aspect of the present invention: the discharging section and the sealing cover form a sealed accommodating space through a sealing ring.

As a further aspect of the present invention: the bottom of transition ring sets firmly the first spring that returns end and ejection of compact section laminating, the top of transition ring sets firmly the second spring that returns end and reaction section laminating.

Compared with the prior art, the beneficial effects of the utility model are that:

this methyl chloroformate production section graphite heat exchanger, through installing the changeover portion additional, when dismantling and overhaul, through dismantling first nut, the ejection of compact section can be taken off to the second nut, dismantle first nut, the second nut, the reaction section can be taken off to the third nut, when dismantling ejection of compact section and overhaul inside, thereby because sealed pad bears the weight of the graphite piece in the changeover portion and make the graphite piece can not drop, and transition ring top bottom sets firmly first spring and transition ring top and sets firmly the second spring, when dismantling first nut, behind the second nut, first spring self restoring force drives ejection of compact section from the outside roll-off of four-section screw rod, after dismantling first nut, the second nut, the third nut, second spring self drives restoring force changeover portion and follows the outside roll-off of four-section screw rod, the purpose of convenient dismantlement and overhaul has been reached.

Drawings

FIG. 1 is a schematic perspective view of a graphite heat exchanger in a methyl chloroformate production stage;

FIG. 2 is a perspective view of a planar structure of a methyl chloroformate production stage graphite heat exchanger;

fig. 3 is a partial structure enlarged view of a in fig. 2 of a graphite heat exchanger in a production stage of methyl chloroformate.

In the figure: 1. a reaction section; 2. graphite blocks; 3. a heat transfer tube; 4. a fixing plate; 5. a sealing cover; 6. an air distribution pipe; 7. a seal ring; 8. a four-section screw; 9. a first nut; 10. a second nut; 11. a third nut; 12. a fourth nut; 13. a transition ring; 14. a gasket; 15. a first spring; 16. a second spring; 17. and a discharging section.

Detailed Description

Referring to fig. 1 to 3, in an embodiment of the present invention, a methyl chloroformate production section graphite heat exchanger includes a reaction section 1, a transition section, a discharge section 17 and a sealing cover 5, the reaction section 1, the transition section, the discharge section 17 and the sealing cover 5 are connected in a detachable connection manner through a four-section screw 8, a sealing installation space is formed inside the reaction section 1, the transition section and the discharge section 17, a sealing accommodation space is formed inside the discharge section 17 and the sealing cover 5, a graphite block 2 is clamped at the bottom in the sealing installation space, a fixing plate 4 is clamped inside the discharge section 17, a plurality of gas distribution pipes 6 communicating with the bottom of the fixing plate 4 are fixedly arranged at the top of the fixing plate 4, and a heat transfer pipe 3 extending to the inside of the discharge section 17 through the gas distribution pipes 6 is fixedly arranged inside the graphite block 2.

In a preferred embodiment, the four-section screw 8 is divided into four sections, the outer diameters of the four sections are respectively 27mm, 24mm, 22mm and 19mm along the axial direction of the reaction section 1 and the discharge section 17, and when the sealing cover 5, the discharge section 17, the transition section and the reaction section 1 are sequentially removed, the external threads of the four-section screw 8 cannot block the sealing cover 5, the discharge section 17, the transition section and the reaction section 1.

In a preferred embodiment, the reaction section 1 and the transition section are connected by a four-section screw 8, a fourth nut 12 with an inner diameter of 27mm and a third nut 11 with an inner diameter of 24mm, which are matched with each other.

In a preferred embodiment, the transition section and the discharge section 17 are connected by a screw 8 of four-section type and a second nut 10 with an inner diameter of 22 mm.

In a preferred embodiment, the discharge section 17 and the sealing cover 5 are screwed together by means of a four-section screw 8 and a first nut 9 with an inner diameter of 19mm.

In a preferred embodiment, the transition section consists of a transition ring 13 and a sealing gasket 14, the top of the sealing gasket 14 is provided with a protrusion, the bottom of the graphite block 2 is provided with a groove matched with the protrusion, and the graphite block 2 is clamped with the inner part of the reaction section 1 through the sealing gasket 14.

In a preferred embodiment, a sealed installation space is formed inside the reaction section 1, the transition ring 13 and the discharge section 17 through a sealing gasket 14, and the sealing gasket 14 is used for sealing the joint gap of the reaction section 1, the transition ring 13 and the discharge section 17.

In a preferred embodiment, the discharge section 17 and the sealing cover 5 form a sealed receiving space inside by the sealing ring 7, and the sealing ring 7 is used for sealing a joint gap between the discharge section 17 and the sealing cover 5.

In a preferred embodiment, a first spring 15 with a return end attached to the discharging section 17 is fixed at the bottom of the transition ring 13, and a second spring 16 with a return end attached to the reaction section 1 is fixed at the top of the transition ring 13.

The utility model discloses a theory of operation is: when needing to overhaul the inside gas distribution pipe 6 of ejection of compact section 17, through dismantling first nut 9 and second nut 10 from the outside of four-section screw rod 8, take off sealed lid 5 and reply end elasticity effect downwardly extending four-section screw rod 8 outside through first spring 15 in the transition ring 13 bottom from the outside of four-section screw rod 8 and pop out ejection of compact section 17, because sealed 14 clamps with graphite block 2 mutually, sealed 14 plays a bearing effect to graphite block 2, when overhauing the inside gas distribution pipe of ejection of compact section 17, graphite block 2 can not fall out from reaction section 1 inside, when needing to overhaul reaction section 1 inside, through dismantling first nut 9, second nut 10 and third nut 11, thereby can follow the outside sealed lid 5 of taking off of four-section screw rod 8, through transition ring 13 bottom first spring 15 end elasticity effect downwardly extending four-section reply screw rod 8 outside pop out ejection of compact section 17 and reply end elasticity effect downwardly extending four-section screw rod 8 outside through transition ring 13 top second spring 16 and pop out the transition ring 13 outside transition section downwardly extending transition section.

It should be noted that the above embodiments belong to the same utility model concept, and the description of each embodiment has its emphasis, and the description of each embodiment is not described in detail, and reference may be made to the description of other embodiments.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The graphite heat exchanger comprises a reaction section (1), a transition section, a discharging section (17) and a sealing cover (5), and is characterized in that the reaction section (1), the transition section, the discharging section (17) and the sealing cover (5) are connected in a detachable connection mode through a four-section screw (8), a sealing installation space is formed inside the reaction section (1), the transition section and the discharging section (17), a sealing accommodating space is formed inside the discharging section (17) and the sealing cover (5), a graphite block (2) is clamped at the bottom in the sealing installation space, a fixing plate (4) is clamped inside the discharging section (17), a plurality of gas distribution pipes (6) communicated to the bottom of the fixing plate (4) are fixedly arranged at the top of the fixing plate (4), and a heat transfer pipe (3) extending to the inside of the discharging section (17) through the gas distribution pipes (6) is fixedly arranged inside the graphite block (2).

2. The methyl chloroformate production stage graphite heat exchanger of claim 1, characterized in that the four-stage screw (8) is divided into four stages, and the outer diameters of the four stages decrease sequentially along the axial direction of the reaction stage (1) and the discharge stage (17), and the outer diameters of the four stages are respectively 27mm, 24mm, 22mm and 19mm.

3. The methyl chloroformate production stage graphite heat exchanger according to claim 2, characterized in that the reaction stage (1) and the transition stage are in threaded connection through a four-stage screw (8), a fourth nut (12) with an inner diameter of 27mm and a third nut (11) with an inner diameter of 24mm, which are fitted with each other.

4. The methyl chloroformate production stage graphite heat exchanger according to claim 3, characterized in that the transition section and the discharge section (17) are in threaded connection through a four-section screw (8) and a second nut (10) with an inner diameter of 22mm, which are mutually matched.

5. The methyl chloroformate production stage graphite heat exchanger according to claim 4, characterized in that the discharge stage (17) and the sealing cover (5) are in threaded connection through a four-stage screw (8) and a first nut (9) with an inner diameter of 19mm, which are matched with each other.

6. The methyl chloroformate production section graphite heat exchanger of claim 5, characterized in that the transition section is composed of a transition ring (13) and a sealing gasket (14), the top of the sealing gasket (14) is provided with a protrusion, the bottom of the graphite block (2) is provided with a groove matched with the protrusion, and the graphite block (2) is clamped with the inner part of the reaction section (1) through the sealing gasket (14).

7. The methyl chloroformate production stage graphite heat exchanger according to claim 6, characterized in that a sealed installation space is formed inside the reaction stage (1), the transition ring (13) and the discharge stage (17) through a sealing gasket (14).

8. The methyl chloroformate production stage graphite heat exchanger according to claim 7, characterized in that the discharge section (17) and the sealing cover (5) are internally provided with a sealing accommodating space formed by a sealing ring (7).

9. The graphite heat exchanger for the methyl chloroformate production stage according to claim 7, wherein a first spring (15) having a returning end attached to the discharge section (17) is fixedly arranged at the bottom of the transition ring (13), and a second spring (16) having a returning end attached to the reaction section (1) is fixedly arranged at the top of the transition ring (13).