Rapid heating ammonia synthesis electric furnace

Abstract

The utility model relates to an ammonia synthesis electric furnace capable of rapidly heating, and aims to solve the problems that gas is converted into a high-temperature and high-pressure state through a compressor at present, the high-temperature and high-pressure gas enters a heating furnace to rapidly heat the inside of the heating furnace, but the gas in the high-temperature and high-pressure state enters the heating furnace to cause impact to easily cause vibration at the joint of pipe parts; the utility model relates to a compressor, in particular to an auxiliary assembly for a compressor, which aims at solving the technical problems that the compressor is connected with an air inlet pipe, the air outlet pipe is arranged at one end of the compressor, and a first flange seat is fixedly arranged on the outer portion of the air outlet pipe, the auxiliary assembly is additionally arranged between the air outlet pipe and the air inlet pipe, and therefore air sprayed out of the air outlet pipe of the compressor is effectively buffered; most impact potential energy is conveniently concentrated on the auxiliary assembly and dispersed, the impact potential energy acting on the connecting position of the air outlet pipe is reduced, loosening and disengaging of the connecting position are effectively avoided, meanwhile, the flow speed of buffered air is reduced, and further uniform temperature rise in the heating electric furnace is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of ammonia synthesis electric furnaces, in particular to a fast-heating ammonia synthesis electric furnace. Background Art

[0002] Ammonia is the main raw material for the fertilizer industry and basic organic chemical industry. Synthetic ammonia refers to ammonia directly synthesized from nitrogen and hydrogen under high temperature, high pressure and in the presence of a catalyst. It is a basic inorganic chemical process. The raw gas for synthetic ammonia mainly includes water, air and natural gas. The sulfide contained in the natural gas can be removed by filtering and compression to prevent catalyst poisoning. The desulfurized natural gas and water vapor are sent to an electric thermal converter, where methane reacts with water vapor to produce carbon monoxide and hydrogen. Some carbon monoxide further reacts with water to produce carbon dioxide and more hydrogen. Carbon dioxide will poison the catalyst and needs to be removed by alkaline washing. The generated hydrogen and nitrogen obtained by separating liquid air are sent to the synthetic ammonia reactor in a ratio of 1:2.8.

[0003] Patent No. CN204356094U discloses an ammonia synthesis catalyst preheating system, comprising an ammonia synthesis unit (2), wherein the ammonia synthesis unit (2) is respectively connected to a pretreatment unit (1) and an unconverted gas washing tower (3); the pretreatment unit (1) comprises a CO conversion device (4), wherein the CO conversion device (4) is connected to a molecular sieve (6) via a conversion gas washing tower (5), and the molecular sieve (6) is connected to a liquid nitrogen washing device (7); the ammonia synthesis unit (2) comprises an ammonia synthesis gas compressor (8), wherein the ammonia synthesis gas compressor (8) is connected to an ammonia synthesis device (10) via a start-up heating furnace (9), and the ammonia synthesis device (10) is provided with an ammonia synthesis catalyst bed (11). The utility model greatly improves the production efficiency of synthetic ammonia, avoids the waste of process gas, reduces the production cost of synthetic ammonia, and effectively improves the utilization rate of process gas.

[0004] However, the above-mentioned ammonia synthesis catalyst advance heating system still has the following shortcomings:

[0005] In the above system, the ammonia synthesis gas compressed by the ammonia synthesis gas compressor enters the start-up heating furnace. After the thermal reaction in the start-up heating furnace, it is introduced into the ammonia synthesis device as a heat carrier. The gas is converted into a high-temperature and high-pressure state by the compressor. The high-temperature and high-pressure gas enters the heating furnace, causing the interior of the heating furnace to heat up rapidly. However, the impact brought by the high-temperature and high-pressure gas entering the heating furnace can easily cause the pipe joints to vibrate, thereby causing the pipe joints to loosen and detach, causing gas leakage. In view of this, we propose an ammonia synthesis electric furnace with rapid heating. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a fast-heating ammonia synthesis electric furnace to solve the current technical problem that gas is converted into a high-temperature and high-pressure state by a compressor, and the high-temperature and high-pressure gas enters the heating furnace to quickly heat up the inside of the heating furnace. However, the impact caused by the high-temperature and high-pressure gas entering the heating furnace can easily cause the pipe connection to vibrate, thereby causing the pipe connection to loosen and detach, resulting in gas leakage.

[0007] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: to design a fast-heating ammonia synthesis electric furnace, including a compressor, wherein an outlet pipe is provided at one end of the compressor, a first flange seat is fixedly provided on the outside of the outlet pipe, an auxiliary component is connected to the end of the outlet pipe close to the first flange seat, an inlet pipe is connected to the end of the auxiliary component away from the first flange seat, and a heating electric furnace is connected to the inlet pipe at the end away from the auxiliary component.

[0008] Preferably, the auxiliary component includes an outer tube, a second flange seat is fixedly provided on the outside of the outer tube, a group of limit grooves are symmetrically opened on the surface of the outer tube, a rubber pad is embedded in the limit groove, an inner tube is movably engaged inside the outer tube, a group of blocks are symmetrically fixed on the surface of the inner tube, and a plurality of arc grooves are distributed at annular intervals inside the inner tube.

[0009] Preferably, one end of the outer tube is connected to the air inlet pipe by a thread, and the other end of the outer tube is connected to the air outlet pipe via the second flange seat and the first flange seat.

[0010] Preferably, the inner tube and the clamping block are integrally formed, and the inner tube forms a clamping structure with the outer tube through the clamping block.

[0011] Preferably, the clamping block and the rubber pad have the same shape and size, and the shape and structure of the combination of the clamping block and the rubber pad match the limiting groove provided on the surface of the outer tube.

[0012] Preferably, the rubber pad is bonded to the outer tube, and the rubber pad is made of fluororubber.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model effectively buffers the gas ejected from the compressor outlet pipe by adding an auxiliary component between the outlet pipe and the inlet pipe, so that most of the impact potential energy is concentrated on the auxiliary component and dispersed, thereby reducing the impact potential energy acting on the connection of the outlet pipe, effectively preventing the connection from loosening and detaching. At the same time, the flow rate of the buffered gas is reduced, which is convenient for further uniform heating in the heating furnace.

[0015] 2. In the utility model, since one end of the outer tube is threadedly connected to the air inlet pipe, and the other end is connected to the air outlet pipe through the second flange seat and the first flange seat, the auxiliary component can be removed as a whole by subsequently removing the fasteners between the second flange seat and the first flange seat and then screwing the outer tube, which facilitates the inspection and replacement of the auxiliary component. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the partial disassembled structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the disassembled structure of the auxiliary components of the utility model;

[0019] Figure 4 It is a schematic diagram of a partial cross-sectional structure of an auxiliary component of the utility model;

[0020] In the figure: 1. compressor; 2. outlet pipe; 3. first flange seat; 4. auxiliary components; 5. inlet pipe; 6. heating furnace;

[0021] 401, outer tube; 402, second flange seat; 403, rubber pad; 404, inner tube; 405, clamping block; 406, arc groove. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0023] A fast heating ammonia synthesis furnace, see Figures 1 to 4 , including a compressor 1, an outlet pipe 2 is provided at one end of the compressor 1, a first flange seat 3 is fixedly provided outside the outlet pipe 2, an auxiliary component 4 is connected to the end of the outlet pipe 2 close to the first flange seat 3, an inlet pipe 5 is connected to the end of the auxiliary component 4 away from the first flange seat 3, and a heating furnace 6 is connected to the end of the inlet pipe 5 away from the auxiliary component 4. The utility model effectively buffers the gas ejected from the outlet pipe 2 of the compressor 1 by adding the auxiliary component 4 between the outlet pipe 2 and the inlet pipe 5, so that most of the impact potential energy is concentrated on the auxiliary component 4 and dispersed, so that the impact potential energy acting on the connection of the outlet pipe 2 is reduced, and the connection is effectively prevented from loosening and detaching. At the same time, the gas flow rate after buffering is reduced, which is convenient for further uniform heating in the heating furnace 6.

[0024] It is worth noting that the auxiliary component 4 includes an outer tube 401, and a second flange seat 402 is fixedly arranged on the outside of the outer tube 401, wherein one end of the outer tube 401 is threadedly connected to the air inlet pipe 5, and the other end of the outer tube 401 is connected to the air outlet pipe 2 through the second flange seat 402 and the first flange seat 3. A group of limiting grooves are symmetrically opened on the surface of the outer tube 401, and a rubber pad 403 is embedded in the limiting groove. It is worth noting that the rubber pad 403 is bonded to the outer tube 401, and the rubber pad 403 is made of fluororubber. 01 has an inner tube 404 movably engaged therein, and a group of blocks 405 are symmetrically fixed on the surface of the inner tube 404. Furthermore, the inner tube 404 and the blocks 405 are integrally formed, and the inner tube 404 forms a engaging structure with the outer tube 401 through the blocks 405. Furthermore, the blocks 405 and the rubber pads 403 have the same shape and size, and the combination of the blocks 405 and the rubber pads 403 matches the shape and structure of the limiting grooves provided on the surface of the outer tube 401. A plurality of arc grooves 406 are distributed at annular intervals inside the inner tube 404. In the present invention, when the high-temperature and high-pressure gas of the compressor 1 rushes into the interior of the auxiliary component 4, the impact potential energy directly acts on the inner tube 404, and the inner tube 404 and the block 405 fixed on the surface thereof will be slightly displaced with the impact force. At this time, the block 405 squeezes the rubber pad 403, converting part of the impact kinetic energy into the elastic potential energy of the rubber pad 403, achieving a buffering effect while dispersing the impact force, reducing the impact on the connection between the first flange seat 3 and the second flange seat 402, and then the high-temperature and high-pressure gas enters the interior of the plurality of arc grooves 406 distributed at annular intervals. , a plurality of arc grooves 406 can extend the gas path and reduce the gas flow speed at the same time, so that the gas entering the heating furnace 6 maintains a corresponding low speed, which is convenient for subsequent uniform heating in the heating furnace 6. Since one end of the outer tube 401 is threadedly connected to the air inlet pipe 5, and the other end is connected to the air outlet pipe 2 through the second flange seat 402 and the first flange seat 3, the fasteners between the second flange seat 402 and the first flange seat 3 are subsequently removed, and then the outer tube 401 is screwed to remove the auxiliary component 4 as a whole, which is convenient for the inspection and replacement of the auxiliary component 4.

[0025] Working principle: The compressor 1 compresses the gas into a high-temperature and high-pressure state, and preheats the gas to facilitate the subsequent rapid heating of the gas inside the heating furnace 6. When the high-temperature and high-pressure gas passing through the compressor 1 rushes into the auxiliary component 4, the impact potential energy directly acts on the inner tube 404. The inner tube 404 and the block 405 fixed on its surface will move slightly with the impact force. At this time, the block 405 squeezes the rubber pad 403, and converts part of the impact kinetic energy into the elastic potential energy of the rubber pad 403, thereby achieving a buffering effect while dispersing the impact force, reducing the impact on the connection between the first flange seat 3 and the second flange seat 402. The gas enters into a plurality of arc grooves 406 which are distributed at annular intervals. The plurality of arc grooves 406 extend the gas path and reduce the gas flow velocity, so that the gas entering the heating furnace 6 maintains a corresponding low speed, which is convenient for subsequent uniform heating in the heating furnace 6. Since one end of the outer tube 401 is threadedly connected to the air inlet pipe 5, and the other end is connected to the air outlet pipe 2 through the second flange seat 402 and the first flange seat 3, the fasteners between the second flange seat 402 and the first flange seat 3 are subsequently removed, and then the outer tube 401 is screwed to remove the auxiliary component 4 as a whole, which is convenient for the inspection and replacement of the auxiliary component 4.

Claims

1. A fast-heating ammonia synthesis electric furnace, comprising a compressor (1), characterized in that: An outlet pipe (2) is provided at one end of the compressor (1), a first flange seat (3) is fixedly provided on the outside of the outlet pipe (2), an end of the outlet pipe (2) close to the first flange seat (3) is connected to an auxiliary component (4), an end of the auxiliary component (4) away from the first flange seat (3) is connected to an intake pipe (5), and an end of the intake pipe (5) away from the auxiliary component (4) is connected to a heating electric furnace (6); the auxiliary component (4) comprises an outer tube (401), a second flange seat (402) is fixedly provided on the outside of the outer tube (401), a group of limiting grooves are symmetrically provided on the surface of the outer tube (401), a rubber pad (403) is embedded in the inside of the limiting groove, an inner tube (404) is movably engaged with the inside of the outer tube (401), a group of clamping blocks (405) are symmetrically fixedly provided on the surface of the inner tube (404), and a plurality of arc grooves (406) are distributed in annular intervals inside the inner tube (404).

2. The rapid heating ammonia synthesis electric furnace according to claim 1, characterized in that: One end of the outer tube (401) is threadedly connected to the air inlet pipe (5), and the other end of the outer tube (401) is connected to the air outlet pipe (2) via the second flange seat (402) and the first flange seat (3).

3. The rapid heating ammonia synthesis electric furnace according to claim 1, characterized in that: The inner tube (404) and the clamping block (405) are integrally formed, and the inner tube (404) forms a clamping structure with the outer tube (401) through the clamping block (405).

4. The rapid heating ammonia synthesis electric furnace according to claim 1, characterized in that: The clamping block (405) and the rubber pad (403) have the same shape and size, and the shape and structure of the assembly of the clamping block (405) and the rubber pad (403) match the limiting groove provided on the surface of the outer tube (401).

5. The rapid heating ammonia synthesis electric furnace according to claim 1, characterized in that: The rubber pad (403) is bonded to the outer tube (401), and the rubber pad (403) is made of fluororubber.

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