CN214198694U

CN214198694U - Gas premixing system suitable for mobile organic waste gas incineration equipment

Info

Publication number: CN214198694U
Application number: CN202023121889.9U
Authority: CN
Inventors: 刘峰; 岳坚; 董凤达; 葛鸿铭
Original assignee: Shanghai Haaenclean Environmental Engineering Co ltd
Current assignee: Shanghai Haaenclean Environmental Engineering Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-09-14
Anticipated expiration: 2030-12-23

Abstract

The utility model provides a gas premix system suitable for portable organic waste gas incineration equipment, the utility model relates to the technical field of incineration equipment, waste gas admission line downstreams horizontal pipe section constitutes the premix district, after the other end of waste gas admission line downstreams horizontal pipe section passes the pipe wall of combustion-supporting air cavity, through connection has waste gas admission line downstream vertical pipe section, the terminal part with waste gas delivery pipe section is as the premix district, make waste gas, gas and air carry out the partial premix before getting into the combustion chamber, after that must burn the district again with the air completely in advance, thereby solve portable incineration equipment and burn insufficient problem; meanwhile, the proportion of air and fuel gas in the premixing section is controlled to ensure that the mixed gas in the conveying section does not meet the combustion condition; the air premixing and gas premixing components are installed in sections, so that the air part in the gas conveying pipe section is reduced as much as possible, the air can be partially premixed before entering an incineration area, the combustion efficiency is improved, and the full combustion is better.

Description

Gas premixing system suitable for mobile organic waste gas incineration equipment

Technical Field

The utility model relates to an incinerator technical field, concretely relates to gas mixes system in advance suitable for portable organic waste gas incinerator.

Background

At present, the incineration technology is generally applied to the treatment of waste gas in petroleum refining or chemical industry, and when the waste gas is not generated at a constant flow rate, such as the adding of raw materials, the feeding process of a storage tank and the like, the situation of the sharp increase of the waste gas amount can occur in a short time. Most of all, when an enterprise performs opening and closing, overhaul and maintenance, waste gas can cause obvious large changes of waste gas amount, concentration or components due to different pipe diameters, different specifications of reaction kettles and different purging periods. However, because the incineration treatment equipment in the traditional process can not meet the increasingly severe treatment requirements, at present, the incineration equipment which can adjust and supplement the gas quantity according to the air quantity and is movable is adopted at home and abroad to deal with the abnormal working conditions.

The movable incineration equipment skid-mounts the specific incineration equipment on the movable equipment, and adopts a direct-fired incineration treatment technology to meet the requirements of treating different waste gas components. Aiming at the abnormal working condition, the waste gas contains combustible organic matter components and a large amount of inert gas, so that in the direct combustion process, the auxiliary fuel quantity needs to be increased and controlled, and the waste gas can be fully combusted to reach the temperature of the hearth to meet the treatment. However, in order to ensure that there is no risk of explosion of the gases in the supply conduit before entering the incineration zone, the oxygen content of the supply gas in the conduit is controlled. However, it should be noted that skid-mounted integrated mobile equipment is equipped with independent exhaust gas, auxiliary fuel, combustion air supply system, incineration system and automatic control part, and based on the design requirement of integrated skid-mounted equipment, the size of the equipment itself has a limit value, and the processing capacity needs to deal with different factories and different process flows, so that the equipment cannot be equipped with a universal premixing chamber, the exhaust gas and the fuel or air are difficult to be fully mixed, the combustion air is insufficient to burn, or the fuel consumption is too large due to the reduction of the furnace temperature. Therefore, in order to better achieve the best combustion effect of the mobile waste gas incineration treatment equipment, research and development of a safe gas premixing system in the mobile waste gas incineration equipment are urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a gas premixing system which is reasonable in design and is suitable for mobile organic waste gas incineration equipment, aiming at overcoming the defects and shortcomings of the prior art, and solving the problem that the mobile waste gas incineration equipment is insufficiently incinerated due to the limitation of skid-mounted size; the flame can not be tempered; easy to operate, maintain and replace.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the device comprises an upstream horizontal pipe section of a waste gas inlet pipeline, an upstream vertical pipe section of the waste gas inlet pipeline, an air premixing passage ball valve, an air premixing passage pressure reducing valve, an air premixing inlet assembly outlet nozzle, a downstream horizontal pipe section of the waste gas inlet pipeline, a rectifier ring, an ignition gun, an anti-backfire double-layer burner core, a burner fixing hoop, a downstream vertical pipe section of the waste gas inlet pipeline, a combustion-supporting air cavity, an outlet nozzle of an auxiliary gas inlet assembly, a pipeline connecting piece and an auxiliary gas conveying pipeline; one end of an upstream horizontal pipe section of the waste gas inlet pipeline is connected with an upstream vertical pipe section of the waste gas inlet pipeline in a penetrating manner, the other end of the upstream vertical pipe section of the waste gas inlet pipeline is connected with a downstream horizontal pipe section of the waste gas inlet pipeline in a penetrating manner, the downstream horizontal pipe section of the waste gas inlet pipeline forms a premixing area, the other end of the downstream horizontal pipe section of the waste gas inlet pipeline penetrates through the wall of a combustion air cavity and is connected with a downstream vertical pipe section of the waste gas inlet pipeline in a penetrating manner, the other end of the downstream vertical pipe section of the waste gas inlet pipeline is connected with a burner fixing hoop, the downstream vertical pipe section of the waste gas inlet pipeline is connected with an anti-backfire double-layer burner core arranged in the burner fixing hoop in a penetrating manner, and a rectifying ring is fixed on the anti-backfire double-layer burner core; the ignition gun is arranged above the rectifier ring; the pipeline of the air premixing air inlet assembly penetrates through the pipe wall of the vertical pipe section at the upstream of the waste gas inlet pipeline, the air outlet end of the pipeline of the air premixing air inlet assembly is connected with an air premixing air inlet assembly outlet nozzle, and the air premixing air inlet assembly outlet nozzle is arranged in the inlet end of the horizontal pipe section at the downstream of the waste gas inlet pipeline; an air premixing passage ball valve and an air premixing passage pressure reducing valve are sequentially connected to a pipeline of the air premixing air inlet assembly from an air inlet end to an air outlet end, and are arranged outside an upstream vertical pipe section of the waste gas inlet pipeline; the pipeline of the auxiliary gas inlet assembly is arranged in the pipe wall of the horizontal pipe section upstream of the waste gas inlet pipeline in a penetrating mode, an outlet nozzle of the auxiliary gas inlet assembly is connected to the gas outlet end of the pipeline of the auxiliary gas inlet assembly, and the pipeline of the auxiliary gas inlet assembly is connected with an auxiliary gas conveying pipeline in a penetrating mode through a pipeline connecting piece.

Furthermore, a plurality of circular air holes are formed in the rectifying ring.

Further, the air premixing air inlet assembly is arranged in parallel with the horizontal pipe section at the upstream of the exhaust gas inlet pipeline.

Furthermore, a pipeline of the auxiliary fuel gas inlet assembly vertically penetrates through a horizontal pipe section on the upstream of the waste gas inlet pipeline.

Furthermore, the outlet nozzle of the auxiliary gas inlet assembly is arranged on the axis of the horizontal pipe section upstream of the exhaust gas inlet pipeline.

Further, the air premixing air inlet component outlet nozzle is arranged on the axis of the horizontal pipe section at the downstream of the waste gas inlet pipeline.

Furthermore, the pipeline of the auxiliary gas inlet assembly and the outlet nozzle of the auxiliary gas inlet assembly are arranged at an angle of 90 degrees.

After the structure is adopted, the beneficial effects of the utility model are that: the utility model provides a gas premixing system suitable for mobile organic waste gas incineration equipment, which can solve the problem of insufficient incineration of the mobile incineration equipment due to the limitation of skid-mounted size in the mobile waste gas incineration; the flame can not be tempered; easy to operate, maintain and replace.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention.

Description of reference numerals:

the device comprises an upstream horizontal pipe section 1 of the waste gas inlet pipeline, an upstream vertical pipe section 2 of the waste gas inlet pipeline, an air premixing passage ball valve 3, an air premixing passage pressure reducing valve 4, an air premixing air inlet assembly 5, an air premixing air inlet assembly outlet nozzle 6, a downstream horizontal pipe section 7 of the waste gas inlet pipeline, a rectifying ring 8, an ignition gun 9, an anti-backfire double-layer burner core 10, a burner fixing hoop 11, a downstream vertical pipe section 12 of the waste gas inlet pipeline, a combustion-supporting air cavity 13, an auxiliary gas inlet assembly outlet nozzle 14, an auxiliary gas inlet assembly 15, a pipeline connecting piece 16 and an auxiliary gas conveying pipeline 17.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the following technical solutions are adopted in the present embodiment: the device comprises an upstream horizontal pipe section 1 of a waste gas inlet pipeline, an upstream vertical pipe section 2 of the waste gas inlet pipeline, an air premixing passage ball valve 3, an air premixing passage pressure reducing valve 4, an air premixing inlet assembly 5, an air premixing inlet assembly outlet nozzle 6, a downstream horizontal pipe section 7 of the waste gas inlet pipeline, a rectifying ring 8, an ignition gun 9, an anti-backfire double-layer burner core 10, a burner fixing hoop 11, a downstream vertical pipe section 12 of the waste gas inlet pipeline, a combustion-supporting air cavity 13, an auxiliary gas inlet assembly outlet nozzle 14, an auxiliary gas inlet assembly 15, a pipeline connecting piece 16 and an auxiliary gas conveying pipeline 17; one end of an upstream horizontal pipe section 1 of the waste gas inlet pipeline is connected with an upstream vertical pipe section 2 of the waste gas inlet pipeline in a penetrating way by a bent pipe, the other end of the upstream vertical pipe section 2 of the waste gas inlet pipeline is connected with a downstream horizontal pipe section 7 of the waste gas inlet pipeline in a penetrating way by a bent pipe, the downstream horizontal pipe section 7 of the waste gas inlet pipeline forms a premixing area, the other end of the downstream horizontal pipe section 7 of the waste gas inlet pipeline penetrates through the pipe wall of a combustion-supporting air cavity body 13 and is connected with a downstream vertical pipe section 12 of the waste gas inlet pipeline in a penetrating way by a bent pipe, the other end of the downstream vertical pipe section 12 of the waste gas inlet pipeline is connected with a burner fixing hoop 11, the downstream vertical pipe section 12 of the waste gas inlet pipeline is connected with an anti-backfire double-layer burner core 10 arranged in the burner fixing hoop 11 in a penetrating way, the burner core 10 is coiled into a disc shape by a corrugated plate material to form an irregular fine passage, and simultaneously adopts upper and lower double-layer superposition, the pore diameter of the fine channel is smaller, the fine pore diameters of about 0.23mm are densely distributed and are smaller than the maximum test safety distance (MESG, 0.29 mm) of hydrogen, the fine channel serves as a gas conveying channel and also plays a role of fire resistance, the rectifying ring 8 is fixed on the anti-backfire double-layer burner core 10, and a plurality of circular air holes are formed in the rectifying ring 8 to ensure that waste gas is contacted with sufficient oxygen and is fully combusted (not shown in the figure); the ignition gun 9 is arranged above the rectifying ring 8; the pipeline of the air premixing air inlet assembly 5 is arranged on the pipe wall of the vertical pipe section 2 at the upstream of the waste gas inlet pipeline in a penetrating mode, the pipeline of the air premixing air inlet assembly 5 is arranged in parallel to the horizontal pipe section 1 at the upstream of the waste gas inlet pipeline, an air outlet end of the pipeline of the air premixing air inlet assembly 5 is connected with an air premixing air inlet assembly outlet nozzle 6, the air premixing air inlet assembly outlet nozzle 6 is arranged on the axis of the horizontal pipe section 7 at the downstream of the waste gas inlet pipeline, the air premixing air inlet assembly outlet nozzle 6 is designed in a conical mode, the air outlet pressure and speed are improved, the influence of large-air-volume waste gas conveying on combustion-supporting air conveying is reduced to a certain extent, and the air premixing air inlet assembly outlet nozzle 6 is arranged in the inlet end of the horizontal pipe section 7 at the downstream of the waste gas inlet pipeline; an air premixing passage ball valve 3 and an air premixing passage pressure reducing valve 4 are sequentially connected to a pipeline of the air premixing air inlet assembly 5 from an air inlet end to an air outlet end, and the air premixing passage ball valve 3 and the air premixing passage pressure reducing valve 4 are both arranged outside the upstream vertical pipe section 2 of the waste gas inlet pipeline; the pipeline of the auxiliary gas inlet assembly 15 is vertically arranged in the pipe wall of the horizontal pipe section 1 upstream of the waste gas inlet pipeline in a penetrating way, the gas outlet end of the pipeline of the auxiliary gas inlet assembly 15 is connected with an auxiliary gas inlet assembly outlet nozzle 14 in a 90-degree angle, the auxiliary gas inlet assembly outlet nozzle 14 is arranged on the axis of the horizontal pipe section 1 upstream of the waste gas inlet pipeline, the flowing direction of the guided gas is the same as the transmission direction of the waste gas, the traditional conveying mode that the gas is connected only in the hole of the waste gas inlet pipeline is optimized, so that unnecessary mixed flow or backflow phenomena in the conveying process of the waste gas and the gas are reduced, the premixing effect of the gas and the waste gas is improved, the auxiliary gas inlet assembly outlet nozzle 14 adopts a conical design, the outlet pressure and the outlet speed of the auxiliary gas are improved, the influence of the conveying of the waste gas with large air volume on the conveying of the gas is reduced to a certain extent, and the pipeline of the auxiliary gas inlet assembly 15 is communicated with the auxiliary gas conveying pipeline 17 by using a pipeline connecting piece 16, the auxiliary conveying pipeline 17 is connected with a transmitter, a pressure reducing valve set and the like to carry out linkage adjustment or monitoring on the gas inlet condition and the furnace temperature, so that the gas inlet amount is ensured to meet the requirement of treating the combustion temperature of waste gas.

The working principle of the specific embodiment is as follows: waste gas passes through an upstream horizontal pipe section 1 of a waste gas inlet pipeline, an upstream vertical pipe section 2 of the waste gas inlet pipeline and a downstream horizontal pipe section 7 of the waste gas inlet pipeline, all the pipe sections are connected by 90-degree bent pipes (the occupied space can be reduced, and the skid-mounted requirement of the whole incineration equipment can be met), the waste gas finally flows through a downstream vertical pipe section 12 of the waste gas inlet pipeline, and is mixed with air (shown by a dotted arrow in figure 1) from a combustion-supporting air cavity 13 output by a circular air hole on a rectifying ring 8 through an anti-backfire double-layer burner core 10 and is ignited by long open fire of an upper ignition gun 9, and finally incineration treatment is completed; in the process, in order to meet the requirement of the waste gas treatment temperature of the hearth of the incineration area, supplementary gas needs to be added, and a gas source is subjected to pressure regulation treatment by an auxiliary gas conveying pipeline 17 through a pipeline pressure regulating device and then is conveyed into a waste gas pipeline through an auxiliary gas inlet assembly outlet nozzle 14 on an auxiliary gas inlet assembly 15 positioned at the upstream horizontal pipe section 1 of the waste gas inlet pipeline (as shown by a dot-dashed arrow in fig. 1); furthermore, in order to make the incineration more complete, before entering the incineration area, the ambient atmosphere is introduced using the air premix air intake assembly 5, where a partial premixing is first performed, where the opening and closing of the air intake is controlled by the air premix passage ball valve 3, and the air premix passage pressure reducing valve 4 installed behind the air premix passage ball valve 3 regulates the air pressure of the premix air, and finally the premix air is delivered into the exhaust gas line through the air premix air intake assembly outlet nozzle 6 of the air premix air intake assembly 5 located at the vertical pipe section 2 upstream of the exhaust gas intake duct (as indicated by the dashed arrow in the duct in fig. 1); the auxiliary gas inlet assembly 15 and the air premixing inlet assembly 5 are respectively arranged at different positions of the pipe section, namely, the auxiliary gas inlet assembly 15 is arranged at the upstream position of the air premixing inlet assembly 5, and the mode that the traditional premixing burner is directly used for premixing gas and air is optimized, so that the mixing time of auxiliary gas and waste gas can be increased, the contact time of combustible gas and oxygen in the air is shortened, and the risk of burning the mixed gas in a pipeline is reduced to a certain extent; in the use process, the air premixing air inlet system is opened under the condition that gas is conveyed in the exhaust gas pipeline, the exhaust gas-entrained air is sent into the anti-backfire double-layer burner core 10 to an incineration area, the air is ensured to be only left in a downstream pipe section and cannot be dissipated to fill the whole exhaust gas pipeline, and the risk of burning the mixed gas in the pipeline is reduced to a certain extent; in order to better ensure that the mixed gas in the waste gas pipeline cannot be combusted in the conveying stage, the oxygen content in the pipeline needs to be controlled below a specific value, and under the condition of determining the oxygen content in the industrial waste gas to be treated, the oxygen content of the mixed gas in the waste gas pipeline can be ensured to be less than the specific value only by controlling the optimal ratio of the auxiliary gas air inflow and the air premixing amount, so that the combustion condition cannot be met, and the risk of the mixed gas in the pipeline is reduced to a certain extent;

after adopting above-mentioned structure, this embodiment's beneficial effect is as follows: the specific embodiment provides a gas premixing system suitable for mobile organic waste gas incineration equipment, which can solve the defect that a premixing chamber cannot be specially designed due to the limitations of skid-mounted size and universality on working conditions in the mobile waste gas incineration; meanwhile, the proportion of air and fuel gas in the premixing section is controlled to ensure that the mixed gas in the conveying section does not meet the combustion condition; the air premixing and gas premixing components are installed in sections, the air part in the gas conveying pipe section is reduced as much as possible, the air can be partially premixed before entering the incineration area, the combustion efficiency is improved, and therefore better and full combustion is achieved. On the other hand, through compact reasonable engineering design for this gas premix system conveniently installs on portable waste gas incineration equipment, and easily operation and maintenance are changed.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a gas mixes system in advance suitable for portable organic waste gas incineration equipment which characterized in that: the device comprises an upstream horizontal pipe section (1) of a waste gas inlet pipeline, an upstream vertical pipe section (2) of the waste gas inlet pipeline, an air premixing passage ball valve (3), an air premixing passage pressure reducing valve (4), an air premixing inlet assembly (5), an air premixing inlet assembly outlet nozzle (6), a downstream horizontal pipe section (7) of the waste gas inlet pipeline, a rectifying ring (8), an ignition gun (9), an anti-backfire double-layer burner core (10), a burner fixing hoop (11), a downstream vertical pipe section (12) of the waste gas inlet pipeline, a combustion air cavity (13), an auxiliary gas inlet assembly outlet nozzle (14), an auxiliary gas inlet assembly (15), a pipeline connector (16) and an auxiliary gas conveying pipeline (17); one end of the horizontal pipe section (1) at the upstream of the waste gas inlet pipeline is connected with an upstream vertical pipe section (2) of the waste gas inlet pipeline in a run-through way, the other end of the upstream vertical pipe section (2) of the waste gas inlet pipeline is connected with a horizontal pipe section (7) at the downstream of the waste gas inlet pipeline in a run-through way, the downstream horizontal pipe section (7) of the waste gas inlet pipeline forms a premixing area, after the other end of the downstream horizontal pipe section (7) of the waste gas inlet pipeline passes through the pipe wall of the combustion-supporting air cavity (13), a downstream vertical pipe section (12) of the waste gas inlet pipeline is connected in a run-through way, the other end of the downstream vertical pipe section (12) of the waste gas inlet pipeline is connected with a burner fixing hoop (11), the downstream vertical pipe section (12) of the waste gas inlet pipeline is communicated with an anti-backfire double-layer burner core (10) arranged in the burner fixing hoop (11), and the rectifying ring (8) is fixed on the anti-backfire double-layer burner core (10); the ignition gun (9) is arranged above the rectifying ring (8); the pipeline of the air premixing air inlet assembly (5) is arranged on the pipe wall of the vertical pipe section (2) at the upstream of the waste gas inlet pipeline in a penetrating way, the air outlet end of the pipeline of the air premixing air inlet assembly (5) is connected with an air premixing air inlet assembly outlet nozzle (6), and the air premixing air inlet assembly outlet nozzle (6) is arranged in the inlet end of a horizontal pipe section (7) at the downstream of the waste gas inlet pipeline; an air premixing passage ball valve (3) and an air premixing passage reducing valve (4) are sequentially connected to a pipeline of the air premixing air inlet assembly (5) from an air inlet end to an air outlet end, and the air premixing passage ball valve (3) and the air premixing passage reducing valve (4) are both arranged outside an upstream vertical pipe section (2) of the waste gas inlet pipeline; the pipeline of the auxiliary gas inlet assembly (15) is arranged in the pipe wall of the horizontal pipe section (1) upstream of the waste gas inlet pipeline in a penetrating mode, an outlet end of the pipeline of the auxiliary gas inlet assembly (15) is connected with an auxiliary gas inlet assembly outlet nozzle (14), and the pipeline of the auxiliary gas inlet assembly (15) is connected with an auxiliary gas conveying pipeline (17) in a penetrating mode through a pipeline connecting piece (16).

2. The gas premixing system for the mobile organic waste gas incineration facility as claimed in claim 1, wherein: a plurality of circular air holes are arranged in the rectifying ring (8).

3. The gas premixing system for the mobile organic waste gas incineration facility as claimed in claim 1, wherein: the air premixing air inlet component (5) is arranged in parallel with the horizontal pipe section (1) at the upstream of the waste gas inlet pipeline.

4. The gas premixing system for the mobile organic waste gas incineration facility as claimed in claim 1, wherein: and a pipeline of the auxiliary gas inlet assembly (15) vertically penetrates through the horizontal pipe section (1) on the upstream of the waste gas inlet pipeline.

5. The gas premixing system for the mobile organic waste gas incineration facility as claimed in claim 1, wherein: and the auxiliary gas inlet component outlet nozzle (14) is arranged on the axis of the horizontal pipe section (1) upstream of the waste gas inlet pipeline.

6. The gas premixing system for the mobile organic waste gas incineration facility as claimed in claim 1, wherein: and the outlet nozzle (6) of the air premixing air inlet assembly is arranged on the axis of a horizontal pipe section (7) at the downstream of the waste gas inlet pipeline.

7. The gas premixing system for the mobile organic waste gas incineration facility as claimed in claim 1, wherein: and a pipeline of the auxiliary gas inlet assembly (15) and an outlet nozzle (14) of the auxiliary gas inlet assembly are arranged at an angle of 90 degrees.