Waste gas treatment and heat recovery device of ammonia synthesis device

Abstract

The utility model relates to the technical field of waste gas treatment, and discloses a waste gas treatment and heat recovery device of a synthetic ammonia device, which comprises a working box and a filter box positioned on the left side of the working box; wherein a connecting groove is formed in the outer side wall of the filter box, a heat exchange pipe is fixedly connected to the outer side wall of the connecting groove, a water pump is inserted into the input end of the heat exchange pipe, an annular groove is formed in the bottom of the filter box, a first threaded groove is formed in the inner side wall of the annular groove, and a supporting plate is arranged at the bottom of the filter box; an annular plate is fixedly connected to the top of the supporting plate, a second threaded groove is formed in the inner side wall of the annular plate, and the annular plate is in threaded connection with an inner cavity of the annular groove; according to the scheme, heat for heating the filter box can be fully utilized, energy consumption is reduced, a filter screen and adsorption cotton are convenient to disassemble, and the labor intensity of a user is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment, in particular to a waste gas treatment heat recovery device for a synthetic ammonia device. Background Art

[0002] With the rapid growth of energy demand brought about by economic and social development, the huge pressure of energy conservation and emission reduction, and the increasingly prominent contradiction between the depletion of traditional energy, LNG has become an important part of international natural gas trade and will become a major component of my country's future energy structure. This has created a good platform for the recovery and reuse of synthetic ammonia relaxation gas. At the same time, through the recovery and reuse of synthetic ammonia waste gas, conditions are created to reduce environmental pollution and energy consumption. Since a large amount of high-temperature waste gas will be generated in the process of synthetic ammonia, it is necessary to exchange heat between the high-temperature waste gas and the production water to reduce energy consumption.

[0003] The utility model patent with patent application publication number 202020856616.X discloses a waste gas treatment heat recovery device for a synthetic ammonia device, including a condensing box, a water inlet pipe is inserted into an installation groove opened at the top of the condensing box, and a water outlet pipe is inserted into the installation groove opened at the bottom of the condensing box; in the present application scheme, when the waste gas is recovered, when the waste gas enters the space formed by the upper vertical pipe and the detachable pipe from the air inlet pipe, the waste gas is isolated by the isolation sleeve to isolate the obviously large impurity particles in the gas, and when the treated waste gas passes through the dust removal sleeve, the dust removal sleeve isolates the solid matter in the waste gas, so that when the waste gas passes through the adsorption plate, the adsorption plate adsorbs the harmful substances in the waste gas, so that the waste gas can reach the purification place.

[0004] However, the above device still has some shortcomings in actual use. The most obvious one is that when the high-temperature exhaust gas passes through the filter box, part of the heat will be transferred to the filter box. This part of the heat cannot be fully utilized, which increases energy consumption. In addition, it is not convenient to disassemble the filter screen and the adsorption cotton when replacing and maintaining the filter screen and the adsorption cotton, which increases the labor intensity of the user. For this reason, we propose a waste gas treatment heat recovery device for a synthetic ammonia device. Utility Model Content

[0005] The utility model aims to provide a waste gas treatment heat recovery device for a synthetic ammonia device to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned invention object, the utility model provides the following technical solutions:

[0007] The present application is specifically as follows: a heat recovery device for waste gas treatment of a synthetic ammonia device, comprising a working box and a filter box, wherein the filter box is located on the left side of the working box;

[0008] Among them, the outer wall of the filter box is provided with a connecting groove, the outer wall of the connecting groove is fixedly connected to a heat exchange tube, the input end of the heat exchange tube is plugged with a water pump, the bottom of the filter box is provided with an annular groove, the inner wall of the annular groove is provided with a first threaded groove, the bottom of the filter box is provided with a support plate, the top of the support plate is fixedly connected to an annular plate, the inner wall of the annular plate is provided with a second threaded groove, and is threadedly connected to the inner cavity of the annular groove.

[0009] As the preferred technical solution of this application,

[0010] A water inlet pipe is inserted at the top of the working box, a drain valve is inserted at the middle of the bottom of the working box, and support legs are fixedly connected to the left and right sides of the bottom of the working box.

[0011] As the preferred technical solution of this application,

[0012] An exhaust valve is inserted into the right side of the outer wall of the working box, and a condenser is inserted into the input end of the exhaust valve. The condenser is spirally fixedly connected to the inner wall of the working box, and a first connecting pipe is inserted into the input end of the condenser. The first connecting pipe passes through the upper side of the left side wall of the inner cavity of the working box and is inserted into the top of the filter box.

[0013] As the preferred technical solution of this application,

[0014] The left side wall of the working box is fixedly connected with mounting plates on both upper and lower sides, the filter box is fixedly connected between the left side walls of the mounting plates, and the water pump is fixedly connected to the top of the mounting plate on the lower side.

[0015] As the preferred technical solution of this application,

[0016] The output end of the water pump is plugged with a transport pipe, which is plugged into the lower left side of the outer wall of the working box. The top of the support plate is fixedly connected with a support column, which is located on the inner side of the annular plate.

[0017] As the preferred technical solution of this application,

[0018] The top of the support column is fixedly connected with a filter screen, the inner side wall of the support column is fixedly connected with adsorption cotton, and the bottom of the support plate is plugged with an air inlet pipe.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] In the scheme of this application:

[0021] 1. By opening a connecting groove on the outside of the filter box and installing a heat exchange pipe through the connecting groove, a water pump draws production water from the working box through a transport pipe and transports it to the heat exchange pipe. The production water is heated by the contact between the heat exchange pipe and the filter box, and the heated production water is transported back to the working box. The heat of the heated filter box can be fully utilized, reducing energy consumption.

[0022] 2. An annular groove is opened at the bottom of the filter box, and the annular groove connects the annular plate and the support plate through the first thread groove and the second thread groove. The support column, the filter screen and the adsorbent cotton are installed through the support plate. The exhaust gas is filtered by the filter screen and the adsorbent cotton. By rotating the support plate, the annular plate is driven to rotate by the support plate. The annular plate rotates in the annular groove through the second thread groove and the first thread groove, and moves out of the annular groove, thereby realizing the replacement of the filter screen and the adsorbent cotton, facilitating the disassembly of the filter screen and the adsorbent cotton, and reducing the labor intensity of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0024] In the attached picture:

[0025] Figure 1 A three-dimensional diagram of a heat recovery device for waste gas treatment of a synthetic ammonia device provided in this application;

[0026] Figure 2 A partial stereoscopic diagram of a heat recovery device for waste gas treatment of a synthetic ammonia device provided in the present application;

[0027] Figure 3 A three-dimensional exploded view of a filter box of a waste gas treatment heat recovery device of a synthetic ammonia device provided in this application;

[0028] Figure 4 This is a three-dimensional exploded and enlarged view of the support column of a waste gas treatment heat recovery device of a synthetic ammonia plant provided in this application.

[0029] In the figure: 100, working box; 110, water inlet pipe; 120, drain valve; 130, supporting leg; 140, exhaust valve; 150, condenser; 151, first connecting pipe; 160, mounting plate; 200, filter box; 210, connecting groove; 220, heat exchange pipe; 230, water pump; 231, transport pipe; 240, annular groove; 241, first threaded groove; 250, supporting plate; 251, annular plate; 252, second threaded groove; 260, supporting column; 261, filter net; 262, adsorption cotton; 270, air inlet pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-4 , a heat recovery device for treating waste gas of a synthetic ammonia device, comprising a working box 100 and a filter box 200, wherein the filter box 200 is located on the left side of the working box 100, and specifically, the filter box 200 is fixedly connected to the left side of the working box 100 through a mounting plate 160;

[0032] The outer wall of the filter box 200 is provided with a connecting groove 210, which is used to support a heat exchange tube 220. The outer wall of the connecting groove 210 is fixedly connected with a heat exchange tube 220, which is used to heat the production water. The input end of the heat exchange tube 220 is plugged with a water pump 230, which is used to pump the production water in the filter box 200 out through a transport pipe 231. The bottom of the filter box 200 is provided with an annular groove 240, which is used to open a first screw. Groove 241, the inner wall of the annular groove 240 is provided with a first thread groove 241, a support plate 250 is arranged at the bottom of the filter box 200, the support plate 250 is used to support the annular plate 251, the top of the support plate 250 is fixedly connected with the annular plate 251, the annular plate 251 is used to connect the support plate 250 through the second thread groove 252 to cooperate with the first thread groove 241, the inner wall of the annular plate 251 is provided with a second thread groove 252, and is threadedly connected to the inner cavity of the annular groove 240.

[0033] See also Figure 1 A water inlet pipe 110 is inserted at the top of the working box 100, a drain valve 120 is inserted in the middle of the bottom of the working box 100, and support legs 130 are fixedly connected to the left and right sides of the bottom of the working box 100. Production water is added through the water inlet pipe 110, and the drain valve 120 is used for drainage. The working box 100 is supported by the support legs 130.

[0034] See also Figure 1 and Figure 2 An exhaust valve 140 is inserted into the right side of the outer wall of the working box 100, and a condenser 150 is inserted into the input end of the exhaust valve 140. The condenser 150 is spirally fixedly connected to the inner wall of the working box 100, and a first connecting pipe 151 is inserted into the input end of the condenser 150. The first connecting pipe 151 passes through the upper side of the left side wall of the inner cavity of the working box 100 and is inserted into the top of the filter box 200. The exhaust gas is discharged through the exhaust valve 140, and the high-temperature exhaust gas is transported through the condenser 150. The production water is heated and the exhaust gas is transported through the first connecting pipe 151.

[0035] See also Figure 1 and Figure 2 The left side wall of the working box 100 is fixedly connected with mounting plates 160 on both upper and lower sides, the filter box 200 is fixedly connected between the left side walls of the mounting plates 160, and the water pump 230 is fixedly connected to the top of the lower mounting plate 160, and the filter box 200 and the water pump 230 are supported by the mounting plate 160.

[0036] See also Figure 1 and Figure 2 The output end of the water pump 230 is connected with a transport pipe 231, and the transport pipe 231 is inserted into the lower left side of the outer wall of the working box 100. The top of the support plate 250 is fixedly connected with a support column 260, and the support column 260 is located on the inner side of the annular plate 251. The water pump 230 extracts the production water from the working box 100 through the transport pipe 231, and supports the filter screen 261 and the adsorption cotton 262 through the support column 260.

[0037] See also Figure 3 and Figure 4 A filter net 261 is fixedly connected to the top of the support column 260, an adsorption cotton 262 is fixedly connected to the inner wall of the support column 260, and an air intake pipe 270 is plugged into the bottom of the support plate 250. The exhaust gas is filtered through the filter net 261 and the adsorption cotton 262, and the exhaust gas is added through the air intake pipe 270.

[0038] Specifically, when the device is in use, the heat recovery device for treating waste gas of the synthetic ammonia device is first connected to a power source, and the high-temperature waste gas is first connected to the air inlet pipe 270. After the waste gas is filtered through the filter screen 261 and the adsorbent cotton 262, it is transported to the condenser 150 through the first connecting pipe 151. At this time, the filter box 200 is heated by the high-temperature gas, and heat is exchanged with the heat exchange tube 220 through the connecting groove 210. The produced water is heated by the heat exchange tube 220. At this time, the water pump 230 is started, and the water pump 230 extracts the produced water in the working box 100 through the transport pipe 231, and transports it to the heat exchange tube 220, and the heated produced water in the heat exchange tube 220 is heated. The produced water is transported to the working box 100, and the high-temperature exhaust gas heats the produced water in the working box 100 through the condenser 150 and is discharged through the exhaust valve 140. When the filter screen 261 and the adsorbent cotton 262 need to be replaced, the support plate 250 is manually rotated, and the annular plate 251 is driven to rotate through the support plate 250. The annular plate 251 rotates in the annular groove 240 through the second thread groove 252 and the first thread groove 241, and moves downward, and the support column 260 is driven to move downward through the support plate 250, and the filter screen 261 and the adsorbent cotton 262 are driven out of the filter box 200 through the support column 260, and the use of the device is completed.

Claims

1. A heat recovery device for treating waste gas of a synthetic ammonia device, comprising a working box (100) and a filter box (200), characterized in that: The filter box (200) is located on the left side of the working box (100); The outer wall of the filter box (200) is provided with a connection groove (210), the outer wall of the connection groove (210) is fixedly connected to a heat exchange tube (220), the input end of the heat exchange tube (220) is plugged with a water pump (230), the bottom of the filter box (200) is provided with an annular groove (240), the inner wall of the annular groove (240) is provided with a first thread groove (241), the bottom of the filter box (200) is provided with a support plate (250), the top of the support plate (250) is fixedly connected to an annular plate (251), the inner wall of the annular plate (251) is provided with a second thread groove (252), and is threadedly connected to the inner cavity of the annular groove (240).

2. The waste gas treatment heat recovery device of a synthetic ammonia plant according to claim 1, characterized in that: A water inlet pipe (110) is plugged into the top of the working box (100), a water discharge valve (120) is plugged into the middle of the bottom of the working box (100), and support legs (130) are fixedly connected to both left and right sides of the bottom of the working box (100).

3. The waste gas treatment heat recovery device of a synthetic ammonia plant according to claim 1, characterized in that: An exhaust valve (140) is plugged into the right side of the outer wall of the working box (100); a condenser (150) is plugged into the input end of the exhaust valve (140); the condenser (150) is spirally fixedly connected to the inner wall of the working box (100); a first connecting pipe (151) is plugged into the input end of the condenser (150); the first connecting pipe (151) passes through the upper side of the left side wall of the inner cavity of the working box (100) and is plugged into the top of the filter box (200).

4. The waste gas treatment heat recovery device of a synthetic ammonia plant according to claim 1, characterized in that: The left side wall of the working box (100) is fixedly connected to mounting plates (160) on both upper and lower sides; the filter box (200) is fixedly connected between the left side walls of the mounting plates (160); and the water pump (230) is fixedly connected to the top of the mounting plate (160) at the lower side.

5. The waste gas treatment heat recovery device of a synthetic ammonia plant according to claim 1, characterized in that: The output end of the water pump (230) is plugged with a transport pipe (231), and the transport pipe (231) is plugged into the lower left side of the outer wall of the working box (100). The top of the support plate (250) is fixedly connected with a support column (260), and the support column (260) is located on the inner side of the annular plate (251).

6. The waste gas treatment heat recovery device of a synthetic ammonia plant according to claim 5, characterized in that: The top of the support column (260) is fixedly connected to a filter screen (261), the inner wall of the support column (260) is fixedly connected to adsorption cotton (262), and the bottom of the support plate (250) is plugged with an air intake pipe (270).

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