Oxygen conveying device for pyrolysis of low-rank coal

Abstract

The utility model relates to the technical field of low-rank coal pyrolysis, in particular to an oxygen conveying device for low-rank coal pyrolysis, which comprises a heating chamber and a connecting pipe arranged at the top of the heating chamber, the top of the connecting pipe is communicated with a charging barrel, the bottom of the heating chamber is communicated with a discharging pipe, and the inner wall of the heating chamber is communicated with an air inlet pipe. According to the oxygen supply device, the air volume valve and the air pressure meter are arranged on the air inlet pipe, so that the air pressure value of oxygen can be checked in real time, and the conveying amount and the flow speed of the oxygen can be adjusted according to the actual situation; the low-rank coal pyrolysis reaction efficiency is improved, the yield and quality of products are further improved, meanwhile, the conveying amount and flow speed of oxygen are accurately controlled, the local oxygen concentration can be prevented from being too high, safety accidents cannot be caused, the connecting pipe for conveying oxygen and the gas conveying pipe can be rapidly assembled and connected through the installation mechanism, and disassembly is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of low-rank coal pyrolysis, in particular to an oxygen delivery device for low-rank coal pyrolysis. Background Art

[0002] The raw coal gas contains a high nitrogen content and a low effective component. After adjustment and analysis, it was found that insufficient oxygen fed into the furnace was the main cause of the high nitrogen content in the raw coal gas. Research and development was carried out to replace combustion air with oxygen-enriched air or pure oxygen to reduce the nitrogen content in the coal gas and increase the content of effective components in the coal gas. Experimental data was collected to master the mechanism of oxygen-enriched coal distillation and form a complete set of industrialized technologies for oxygen-enriched distillation. Experimental results: The effective (CO+H2) content in the raw coal gas increased from 35% to over 45%, and the nitrogen content in the pyrolysis gas decreased from 48% to below 36%. Oxygen-enriched combustion is both efficient and environmentally friendly. It not only increases the production capacity of the unit but also significantly reduces the nitrogen content in the coal gas, effectively reducing the energy consumption of downstream chemical production units.

[0003] During the pyrolysis process of low-rank coal, some equipment is currently unable to adjust the oxygen delivery volume and flow rate during oxygen delivery, which may lead to low reaction efficiency, thereby affecting the output and quality of the product. At the same time, the high concentration of oxygen environment increases the risk of fire and explosion. If the oxygen delivery volume and flow rate cannot be accurately controlled, it may cause the local oxygen concentration to be too high, causing a safety accident. In addition, the connecting air pipes between the existing low-rank coal pyrolysis equipment and the oxygen delivery equipment are relatively inconvenient to install, which makes maintenance and disassembly more troublesome and the work efficiency is relatively low. Utility Model Content

[0004] The purpose of the present utility model is to provide an oxygen delivery device for pyrolysis of low-rank coal to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an oxygen delivery device for pyrolysis of low-rank coal, comprising a heating chamber, and further comprising:

[0006] A connecting pipe is arranged at the top of the heating chamber, the top of the connecting pipe is connected to the material barrel, the bottom of the heating chamber is connected to the discharge pipe, the inner wall of the heating chamber is connected to the air inlet pipe, the inner wall of the air inlet pipe is respectively fixed with an air volume valve and a pressure gauge, and one end of the air inlet pipe is provided with a mounting mechanism for connecting the oxygen supply pipe.

[0007] Preferably, the mounting mechanism includes a bayonet fixed to the inner wall of the air intake pipe, and a positioning ring is fixed to the outer side of the bayonet.

[0008] Preferably, a locking nut is rotatably connected to the outer side of the positioning ring, the locking nut is sleeved on the outer side of the air intake pipe, and a rubber gasket is provided on the inner wall of the locking nut.

[0009] Preferably, the inner wall of the locking nut is threadedly connected to a flexible joint, the flexible joint is rotatably connected to the outer side of the positioning ring, an adjusting disk is fixed to the outer side of the flexible joint, and a mounting nut is provided on one side of the flexible joint.

[0010] Preferably, a rotation groove is formed on the inner wall of the movable joint, and a rotation ring is rotatably connected to the inner wall of the rotation groove, and the rotation ring is fixed to one side of the mounting nut.

[0011] Preferably, a first control valve is fixed to the inner wall of the connecting pipe, and a second control valve is fixed to the inner wall of the discharge pipe.

[0012] Preferably, the top of the barrel is connected to a feed pipe, and the top of the feed pipe is provided with a sealing cover.

[0013] Preferably, a support ring is fixed to the outside of the heating chamber, four support legs are fixed to the bottom of the support ring, and wear-resistant pads are fixed to the bottom of the support legs.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] The utility model can check the oxygen pressure value in real time by arranging an air volume valve and an air pressure gauge on the air inlet pipe, and can adjust the oxygen delivery amount and flow rate according to actual conditions, thereby improving the efficiency of the low-rank coal pyrolysis reaction, and thus improving the output and quality of the product. At the same time, the oxygen delivery amount and flow rate are accurately controlled to avoid excessive local oxygen concentration and prevent safety accidents. By arranging the installation mechanism, the connecting pipe for delivering oxygen and the gas pipe can be quickly assembled and connected, and are easy to disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a preferred embodiment of the oxygen delivery device for pyrolysis of low-rank coal provided by the utility model;

[0017] Figure 2 A schematic diagram of the structure of the air intake pipe provided by the utility model;

[0018] Figure 3 A schematic diagram of the internal structure of the locking nut provided by the utility model;

[0019] Figure 4 This is a structural diagram of the installation mechanism provided by the utility model.

[0020] In the figure: 1, heating chamber; 2, connecting pipe; 3, barrel; 4, discharge pipe; 5, air inlet pipe; 6, air volume valve; 7, air pressure gauge; 8, mounting mechanism; 81, locking pin; 82, positioning ring; 83, locking nut; 84, rubber gasket; 85, union joint; 86, adjusting disc; 87, mounting nut; 88, rotating groove; 89, rotating ring; 9, first control valve; 10, second control valve; 11, feed pipe; 12, sealing cover; 13, support ring; 14, support leg; 15, wear-resistant pad. DETAILED DESCRIPTION

[0021] To further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model will be described in detail as follows in combination with the drawings and preferred embodiments.

[0022] Please refer to Figure 1-4 As shown in the figure, an oxygen delivery device for low-rank coal pyrolysis, comprising a heating chamber 1, which can pyrolyze low-rank coal by being provided; a connecting pipe 2 is arranged on the top of the heating chamber 1, which can connect the heating chamber 1 and the barrel 3 by being provided; the top of the connecting pipe 2 is communicated with the barrel 3, which can store low-rank coal by being provided; the bottom of the heating chamber 1 is communicated with the discharge pipe 4; the inner wall of the heating chamber 1 is communicated with the air inlet pipe 5, which can add oxygen into the heating chamber 1 by being provided; the inner wall of the air inlet pipe 5 is respectively fixed with the air volume valve 6 and the air pressure gauge 7, which can control the air intake and flow rate of oxygen delivery by being provided, and can check the air pressure value by being provided; one end of the air inlet pipe 5 is provided with the mounting mechanism 8 for connecting the oxygen delivery pipe, which can facilitate the quick connection of the air inlet pipe 5 and the oxygen delivery pipe of the oxygen delivery equipment by being provided.

[0023] Please refer to Figure 3 and Figure 4As shown, the mounting mechanism 8 includes a bayonet 81 fixed to the inner wall of the air intake pipe 5, which can be fixed to the inner wall of the air intake pipe 5 by setting the bayonet 81; a positioning ring 82 is fixed to the outer side of the bayonet 81, and the locking nut 83 can be limited by setting the positioning ring 82; the outer side of the positioning ring 82 is rotatably connected to the locking nut 83, and the locking nut 83 is sleeved on the outer side of the air intake pipe 5 and can be connected to the flexible joint 85 by setting the locking nut 83; the inner wall of the locking nut 83 is provided with a rubber gasket 84, and the rubber gasket 84 can improve the sealing during the connection; the inner wall of the locking nut 83 is threadedly connected to the flexible joint 85, and the flexible joint 85 is rotatably connected to The outer side of the positioning ring 82 is provided with a flexible joint 85, which can be conveniently threadedly connected to the locking nut 83 and is easy to disassemble and replace; an adjusting disk 86 is fixed to the outer side of the flexible joint 85, and the flexible joint 85 can be easily rotated by providing the adjusting disk 86; a mounting nut 87 is provided on one side of the flexible joint 85, and the mounting nut 87 can be connected to the oxygen delivery pipe; a rotating groove 88 is provided on the inner wall of the flexible joint 85, and a rotating ring 89 is rotatably connected to the inner wall of the rotating groove 88, and the rotating ring 89 is fixed to one side of the mounting nut 87. By providing the rotating groove 88 and the rotating ring 89, the rotation flexibility of the flexible joint 85 when connected to the mounting nut 87 can be improved.

[0024] See also Figure 1 and Figure 2 As shown, a first control valve 9 is fixed to the inner wall of the connecting pipe 2, and the first control valve 9 can be used to control the quantitative entry of coal into the heating chamber 1 in the barrel 3; a second control valve 10 is fixed to the inner wall of the discharge pipe 4, and the discharge of coal in the heating chamber 1 can be controlled by the second control valve 10; a feed pipe 11 is connected to the top of the barrel 3, and coal can be added to the barrel 3 by setting the feed pipe 11; a sealing cover 12 is provided on the top of the feed pipe 11, and the feed pipe 11 can be sealed by setting the sealing cover 12; a support ring 13 is fixed to the outside of the heating chamber 1, and the heating chamber 1 can be fixed by setting the support ring 13; four support legs 14 are fixed to the bottom of the support ring 13, and wear-resistant pads 15 are fixed to the bottom of the support legs 14, and the heating chamber 1 can be supported and fixed by setting the support legs 14 and the wear-resistant pads 15.

[0025] Working principle: the worker through the installation of the nut 87 and the joint 85 with the inlet pipe 5 and oxygen delivery device gas pipe threaded connection, when need to replace the installation nut 87 and joint 85 type, can through the adjusting disc 86 and locking nut 83 reverse rotation at the same time, joint 85 is taken off, locking nut 83 is equipped with rubber pad 84, prevent leakage, connect good oxygen delivery pipe, pour coal through the feed pipe 11 into the barrel 3, through the first control valve 9 control barrel 3 coal quantitative into heating chamber 1 coal pyrolysis, pyrolysis, open the gas valve 6 in the inlet pipe 5, according to the value on the gas pressure gauge 7, adjust the suitable oxygen gas inlet quantity and flow rate, finally coal pyrolysis is completed, through the discharge pipe 4 discharge, heating chamber 1 is equipped with exhaust gas discharge structure.

[0026] The above is only the preferred embodiment of the present application, not any form of the present application is limited, although the present application has been disclosed as above with preferred embodiments, however, not to limit the present application, any person skilled in the art, without departing from the scope of the present application technical scheme, can utilize the above disclosed technical content to make some more change or modification of equivalent examples, but as long as it does not deviate from the technical scheme of the present application, according to the technical essence of the present application, any brief introduction modification, equivalent change and modification of the above examples, still belongs to the scope of the present application technical scheme.

Claims

1. An oxygen delivery device for pyrolysis of low-rank coal, comprising a heating chamber (1), characterized in that: Also includes: A connecting pipe (2) is provided at the top of the heating chamber (1), the top of the connecting pipe (2) is connected to a barrel (3), the bottom of the heating chamber (1) is connected to a discharge pipe (4), the inner wall of the heating chamber (1) is connected to an air intake pipe (5), an air volume valve (6) and an air pressure gauge (7) are fixed to the inner wall of the air intake pipe (5), and one end of the air intake pipe (5) is provided with a mounting mechanism (8) for connecting an oxygen supply pipe.

2. The oxygen delivery device for pyrolysis of low-rank coal according to claim 1, characterized in that: The mounting mechanism (8) comprises a bayonet (81) fixed to the inner wall of the air inlet pipe (5), and a positioning ring (82) is fixed on the outer side of the bayonet (81).

3. The oxygen delivery device for pyrolysis of low-rank coal according to claim 2, characterized in that: The outer side of the positioning ring (82) is rotatably connected to a locking nut (83), the locking nut (83) is sleeved on the outer side of the intake pipe (5), and a rubber gasket (84) is provided on the inner wall of the locking nut (83).

4. The oxygen delivery device for pyrolysis of low-rank coal according to claim 3, characterized in that: The inner wall of the locking nut (83) is threadedly connected to a flexible joint (85), and the flexible joint (85) is rotatably connected to the outer side of the positioning ring (82). An adjusting disk (86) is fixed to the outer side of the flexible joint (85), and a mounting nut (87) is provided on one side of the flexible joint (85).

5. The oxygen delivery device for pyrolysis of low-rank coal according to claim 4, characterized in that: The inner wall of the movable joint (85) is provided with a rotation groove (88), and the inner wall of the rotation groove (88) is rotatably connected to a rotation ring (89), and the rotation ring (89) is fixed to one side of the mounting nut (87).

6. The oxygen delivery device for pyrolysis of low-rank coal according to claim 1, characterized in that: A first control valve (9) is fixed to the inner wall of the connecting pipe (2), and a second control valve (10) is fixed to the inner wall of the discharge pipe (4).

7. The oxygen delivery device for pyrolysis of low-rank coal according to claim 1, characterized in that: The top of the barrel (3) is connected to a feed pipe (11), and the top of the feed pipe (11) is provided with a sealing cover (12).

8. The oxygen delivery device for pyrolysis of low-rank coal according to claim 1, characterized in that: A support ring (13) is fixed to the outside of the heating chamber (1), four support legs (14) are fixed to the bottom of the support ring (13), and wear-resistant pads (15) are fixed to the bottom of the support legs (14).

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