CN215841663U

CN215841663U - Waste heat recovery device for oxalyl chloride rectifying tower

Info

Publication number: CN215841663U
Application number: CN202121886104.9U
Authority: CN
Inventors: 王耀; 张明
Original assignee: Tianjin Diester Energy Saving Equipment Technology Co ltd
Current assignee: Tianjin Diester Energy Saving Equipment Technology Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-02-18
Anticipated expiration: 2031-08-12

Abstract

The utility model discloses a waste heat recovery device for an oxalyl chloride rectification tower, belonging to the technical field of rectification processing. The utility model comprises a cooling box and a filter box. The tops of the cooling box and the filter box are provided with a first box cover and a second Two box covers, the top of the first box cover communicates with the bottom end of the air duct, and the outer wall of the air duct is provided with an air valve. The waste heat recovery device for the oxalyl chloride rectification column is provided with a pump body, a cooling box, a ring pipe, a water pipe, a connecting pipe, a heat conduction pipe and a second observation box, and the heated water can be extracted through the pump body for the rectification column. At the same time, part of the steam after cooling can be discharged through the connecting pipe for use in the rectification tower, so as to adjust the temperature and air pressure in the rectification tower. Secondly, the gas can flow in the heat pipe, and the heat pipe can be buried. It is very suitable for heating on the ground or erecting it indoors. Through the above-mentioned recovery and full utilization of the waste heat generated, the waste of thermal energy can be reduced.

Description

Waste heat recovery device for oxalyl chloride rectifying tower

Technical Field

The utility model belongs to the technical field of rectification processing, and particularly relates to a waste heat recovery device for an oxalyl chloride rectification tower.

Background

Oxalyl chloride is diacid chloride derived from oxalic acid, oxalyl chloride is colorless liquid, can be prepared by reacting oxalic acid with phosphorus pentachloride, is mainly used as a reagent for organic synthesis, has strong irritation, can cause severe burns of skin and mucosa, is slightly inhaled to cause anorexia, and then has cough, dyspnea, fatigue, diarrhea, vomiting, headache, asthma, hypopsia and the like; a rectifying column is usually used in the rectifying process of oxalyl chloride.

The existing rectifying tower mostly adopts a steam heating mode, liquid in the tower is heated to realize rectification, after feed liquid with certain temperature and pressure enters the rectifying tower, the feed liquid is gradually concentrated at a rectifying section, most of steam generated in the oxalyl chloride rectifying process is directly discharged, steam waste heat cannot be effectively recovered, and certain heat energy waste is caused, so that the waste heat recovery device for the oxalyl chloride rectifying tower is needed.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the defects in the prior art, the utility model provides a waste heat recovery device for an oxalyl chloride rectifying tower, and solves the problem that most of steam generated in the oxalyl chloride rectifying process is directly discharged, so that the waste heat of the steam cannot be effectively recovered, and certain heat energy is wasted.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a waste heat recovery device for oxalyl chloride rectifying tower, includes cooling box and filter cartridge, the top of cooling box and filter cartridge all is provided with first lid and second lid, the top of first lid is linked together with the bottom of air duct, the outer wall of air duct is provided with the pneumatic valve, the bottom of air duct is linked together with the top of toroidal tube, the bottom of toroidal tube is linked together with the top of first observation box, the upper surface of first observation box and the lower fixed surface of cooling box are connected.

One side of the cooling box is communicated with the output end of the extraction assembly, the outer wall of the first observation box is provided with a discharge assembly, the lower surface of the first observation box is communicated with one end of a heat conduction pipe, the other end of the heat conduction pipe is communicated with the lower surface of the second observation box through a pipe orifice, the upper surface of the second observation box is communicated with the lower surface of the filter box, and the filter box is internally provided with a filter assembly.

As a further scheme of the utility model: the top of second lid is provided with the bleeder valve, the outer wall of second observation box is provided with the air outlet valve, the heat pipe is the S-shaped design.

As a further scheme of the utility model: the extraction assembly comprises a water pipe, one end of the water pipe is communicated with the output end of the pump body, and the input end of the pump body is communicated with the outer wall of the cooling box.

As a further scheme of the utility model: the discharge assembly comprises a connecting pipe, one end of the connecting pipe is communicated with the outer wall of the first observation box, and a magnetic valve is arranged on the outer wall of the connecting pipe.

As a further scheme of the utility model: the filter assembly comprises a filter element layer, the filter element layer is arranged at the bottom of the inner wall of the filter box, an activated carbon layer is arranged on the upper surface of the filter element layer, and a biological cotton layer is arranged on the upper surface of the activated carbon layer.

As a further scheme of the utility model: the outer wall joint of cooling box has the refrigeration piece, the opposite face of cooling box and filter cartridge all is provided with two mounting panels, one side of mounting panel is provided with a plurality of mounting hole.

(III) advantageous effects

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

1. the waste heat recovery device for the oxalyl chloride rectifying tower is characterized in that a pump body, a cooling box, an annular pipe, a water pipe, a connecting pipe, a heat conducting pipe and a second observation box are arranged, when the high-temperature gas generated by the rectification processing needs to be subjected to pre-waste heat recovery, water is filled into the cooling box, the gas guide pipe can be communicated with the exhaust port of the rectifying tower, gas can flow in the annular pipe, water in the cooling box can be heated, the heated water can be extracted through the pump body for the rectifying tower to use and can also be discharged for free use, meanwhile, a part of the steam after temperature reduction can be discharged through a connecting pipe for the use of the rectifying tower so as to adjust the temperature and the air pressure in the rectifying tower, secondly, the gas can flow in the heat conduction pipe, the heat conduction pipe can be buried on the ground or erected indoors for heat supply, through the recovery make full use of the waste heat of production, reduce the waste of heat energy, very be suitable for.

2. This waste heat recovery device for oxalyl chloride rectifying column observes the box through setting up filter cartridge, heat pipe, filter element layer, activated carbon layer, biological cotton layer and second, because during oxalyl chloride rectification processing, its itself contains partly harmful substance, when cooling gas and discharging, gas loops through filter element layer, activated carbon layer and biological cotton layer, effectively realizes filtering the purpose of discharging again gas, improves the feature of environmental protection of its processing.

3. This waste heat recovery device for oxalyl chloride rectifying column, through setting up first observation box, the box is observed to the second, the heat pipe, ring pipe and refrigeration piece, because the setting of box is observed to first observation box and second, liquefied volume and state after the accessible is observed the steam condensation, so that relevant personnel handle, because of being provided with the refrigeration piece, the refrigeration piece can improve the cooling effect to steam, make the steam liquefaction, effectively further recycle to the steam after the liquefaction, because of being provided with S-shaped heat pipe and ring pipe, the time that the extension gas stayed, improve the heat conduction effect.

Drawings

FIG. 1 is a schematic cross-sectional view of a solid body according to the present invention;

FIG. 2 is a schematic perspective sectional view of the cooling box of the present invention;

FIG. 3 is an enlarged schematic view of the structure of the present invention at A;

in the figure: 1. a cooling box; 2. a filter box; 3. an air duct; 4. an air valve; 5. a first box cover; 6. an annular tube; 7. a first observation box; 8. a refrigeration plate; 9. an extraction assembly; 91. a pump body; 92. a water pipe; 10. a discharge assembly; 101. a magnetic valve; 102. a connecting pipe; 11. a heat conducting pipe; 12. a second box cover; 13. a discharge valve; 14. a filter assembly; 141. a biological cotton layer; 142. an activated carbon layer; 143. a filter layer; 15. a second observation box; 16. a pipe orifice; 17. and (7) mounting the plate.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

As shown in fig. 1-3, the present invention provides a technical solution: a waste heat recovery device for an oxalyl chloride rectifying tower comprises a cooling box 1 and a filter box 2, wherein the tops of the cooling box 1 and the filter box 2 are respectively provided with a first box cover 5 and a second box cover 12, the top of the first box cover 5 is communicated with the bottom end of an air guide pipe 3, the outer wall of the air guide pipe 3 is provided with an air valve 4, and air can flow in an annular pipe 6 by arranging a pump body 91 and a connecting pipe 102, the water in the cooling box 1 can be heated, the heated water can be pumped by the pump body 91 for the use of the rectifying tower and can also be discharged for free use, meanwhile, a part of steam after temperature reduction can be discharged through the connecting pipe 102 to be used by the rectifying tower, so that the temperature and the air pressure in the rectifying tower can be adjusted, the bottom end of the air duct 3 is communicated with the top end of the annular pipe 6, the bottom end of the annular pipe 6 is communicated with the top of the first observation box 7, and the upper surface of the first observation box 7 is fixedly connected with the lower surface of the cooling box 1.

One side of the cooling box 1 is communicated with the output end of the extraction component 9, the outer wall of the first observation box 7 is provided with a discharge component 10, the lower surface of the first observation box 7 is communicated with one end of a heat conduction pipe 11, gas can flow in the heat conduction pipe 11 by arranging the heat conduction pipe 11, the heat conduction pipe 11 can be buried on the ground surface or erected indoors for heat supply, the generated waste heat is recycled and fully utilized by the method, the waste of heat energy is reduced, the other end of the heat conduction pipe 11 is communicated with the lower surface of the second observation box 15 by an orifice 16, the liquefied amount and the liquefied state after steam condensation can be observed by arranging the first observation box 7 and the second observation box 15, so that related personnel can handle the liquefied amount and the liquefied state after the steam condensation, the upper surface of the second observation box 15 is communicated with the lower surface of the filter box 2, and the filter component 14 is arranged in the filter box 2.

Specifically, as shown in fig. 1 and fig. 2, the top end of the second box cover 12 is provided with the exhaust valve 13, the outer wall of the second observation box 15 is provided with the air outlet valve 4, the heat pipe 11 is designed in an S shape, because of the heat pipe 11 and the annular pipe 6 which are provided with the S shape, the time of gas retention is prolonged, the heat conduction effect is improved, the extraction component 9 comprises a water pipe 92, one end of the water pipe 92 is communicated with the output end of the pump body 91, the input end of the pump body 91 is communicated with the outer wall of the cooling box 1, the exhaust component 10 comprises a connecting pipe 102, one end of the connecting pipe 102 is communicated with the outer wall of the first observation box 7, and the outer wall of the connecting pipe 102 is provided with the magnetic valve 101.

Specifically, as shown in fig. 1, filtering component 14 includes filter element layer 143, filter element layer 143 sets up the bottom at filter cartridge 2 inner wall, the upper surface of filter element layer 143 is provided with activated carbon layer 142, activated carbon layer 142's upper surface is provided with biological cotton layer 141, through setting up filtering component 14, when cooling down the emission to gas, gas loops through filter element layer 143, activated carbon layer 142 and biological cotton layer 141, effectively realize filtering the mesh of emission again to gas, cooling cartridge 1's outer wall joint has refrigeration piece 8, because of being provided with refrigeration piece 8, refrigeration piece 8 can improve the cooling effect to steam, make steam liquefaction, effectively further recycle the steam after the liquefaction, cooling cartridge 1 and filter cartridge 2's opposite face all is provided with two mounting panels 17, one side of mounting panel 17 is provided with a plurality of mounting hole.

The working principle of the utility model is as follows:

s1, when the high-temperature gas generated by rectification processing needs to be subjected to pre-waste heat recovery, water is filled into the cooling box 1, the refrigerating sheet 8 is opened, the gas guide pipe 3 is communicated with the exhaust port of the rectification tower, the gas can flow in the annular pipe 6 and can heat the water in the cooling box 1, the heated water can be extracted through the pump body 91 and used by the rectification tower or can be discharged for free use, and meanwhile, a part of cooled steam can be discharged through the connecting pipe 102 and used by the rectification tower;

s2, when the gas continues to flow, the gas can flow in the heat conduction pipe 11, the heat conduction pipe 11 can be buried on the ground or erected indoors for heating, the gas passes through the filter element layer 143, the activated carbon layer 142 and the biological cotton layer 141 in sequence, the gas is effectively filtered, and then the gas can be discharged through the discharge valve 13.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. a waste heat recovery device for an oxalyl chloride rectifying tower, comprising a cooling box (1) and a filter box (2), it is characterized in that: the top of the cooling box (1) and the filter box (2) is provided with the first A box cover (5) and a second box cover (12), the top of the first box cover (5) communicates with the bottom end of the air duct (3), the outer wall of the air duct (3) is provided with air Valve (4), the bottom end of the air conduit (3) is communicated with the top end of the annular tube (6), and the bottom end of the annular tube (6) is communicated with the top of the first observation box (7), so The upper surface of the first observation box (7) is fixedly connected with the lower surface of the cooling box (1);

One side of the cooling box (1) is communicated with the output end of the extraction assembly (9), the outer wall of the first observation box (7) is provided with a discharge assembly (10), and the first observation box (7) The lower surface of the heat transfer pipe (11) is communicated with one end of the heat transfer pipe (11), and the other end of the heat transfer pipe (11) is communicated with the lower surface of the second observation box (15) through the nozzle (16), and the second observation box The upper surface of (15) communicates with the lower surface of the filter box (2), and the filter box (2) is provided with a filter assembly (14).

2. a kind of waste heat recovery device for oxalyl chloride rectifying tower according to claim 1, is characterized in that: the top of described second box cover (12) is provided with discharge valve (13), described second observation box The outer wall of (15) is provided with an air outlet valve (4), and the heat transfer pipe (11) is of S-shaped design.

3. A kind of waste heat recovery device for oxalyl chloride rectifying tower according to claim 1, is characterized in that: described extraction assembly (9) comprises water pipe (92), and one end of described water pipe (92) is connected with pump body (92). The output end of the pump body (91) is communicated with the output end of the pump body (91), and the input end of the pump body (91) is communicated with the outer wall of the cooling box (1).

4. The waste heat recovery device for an oxalyl chloride rectifying tower according to claim 3, wherein the discharge assembly (10) comprises a connecting pipe (102), and one end of the connecting pipe (102) is connected to the first The outer walls of an observation box (7) are communicated with each other, and a magnetic valve (101) is arranged on the outer wall of the connecting pipe (102).

5. a kind of waste heat recovery device for oxalyl chloride rectifying tower according to claim 1, is characterized in that: described filter assembly (14) comprises filter element layer (143), and described filter element layer (143) is arranged on filter box (2) At the bottom of the inner wall, the upper surface of the filter element layer (143) is provided with an activated carbon layer (142), and the upper surface of the activated carbon layer (142) is provided with a biological cotton layer (141).

6. A kind of waste heat recovery device for oxalyl chloride rectifying tower according to claim 5, is characterized in that: the outer wall of described cooling box (1) is clamped with refrigeration sheet (8), and described cooling box (1) The surfaces opposite to the filter box (2) are provided with two mounting plates (17), and one side of the mounting plate (17) is provided with several mounting holes.