High-temperature flue gas secondary regulation control device for gas oxidation device

Abstract

The utility model relates to a secondary regulation control device for high-temperature flue gas of a gas oxidation device. According to the technical scheme, an outlet of a centrifugal fan device is connected with an inlet of a centrifugal fan device outlet flexible connector; one end of the centrifugal fan rear connecting channel is connected with an outlet of the centrifugal fan device outlet flexible connector, and the other end of the centrifugal fan rear connecting channel is connected with the gas oxidation device; a low-pressure fluid conveying pipeline and a pneumatic flow regulating valve are arranged between the side end face of the rear connecting channel of the centrifugal fan and the air distribution box; and a gas distribution box and a high-temperature flue outlet are arranged above the gas oxidation device. The utility model has the beneficial effects that the secondary adjustment of the working condition of the high-temperature flue gas at the outlet of the high-temperature flue is carried out according to the ultralow-concentration gas output by the centrifugal fan device and the flow control of the pneumatic flow control valve, so that the control problem of the temperature requirement of the outlet of the high-temperature flue is solved; and the service life and the overall operation efficiency of waste heat utilization equipment connected with the outlet of the high-temperature flue of the gas oxidation device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas oxidation, in particular to a secondary regulating and controlling device for high-temperature flue gas of a gas oxidation device. Background Art

[0002] The gas oxidation device is the core component of the gas oxidation technology. At the same time, the process design of the secondary precise regulation and temperature control of the high-temperature flue gas of the gas oxidation device is also critical. The secondary precise regulation and temperature control of the high-temperature flue gas outlet will directly affect the service life and overall operating efficiency of the waste heat utilization equipment.

[0003] The high-temperature flue gas outlets of the gas oxidation devices currently used in the market do not have a process design for accurate secondary regulation and temperature control of flue gas, which cannot meet the requirements of the gas oxidation device for accurate secondary regulation and temperature control of high-temperature flue gas, making the temperature field of the high-temperature flue gas outlet temperature change more obvious, directly affecting the service life and overall operating efficiency of the waste heat utilization equipment. Therefore, the newly added process design for accurate secondary regulation and temperature control of high-temperature flue gas is of great significance to the development and promotion of gas oxidation devices. Utility Model Content

[0004] The purpose of the utility model is to address the above-mentioned defects in the prior art and to provide a two-level regulation and control device for high-temperature flue gas in a gas oxidation device. Compared with the traditional gas oxidation device without adjusting the high-temperature flue outlet temperature, the utility model solves the problem of controlling the high-temperature flue outlet temperature and improves the service life and overall operating efficiency of the waste heat utilization equipment connected to the gas oxidation device.

[0005] The utility model discloses a high-temperature flue gas two-stage regulating and controlling device for a gas oxidation device, and the technical scheme thereof is as follows: comprising a centrifugal fan device (2), a centrifugal fan device outlet flexible connection (3), a centrifugal fan rear connecting channel (4), a pneumatic flow regulating valve (5), a low-pressure fluid delivery pipeline (6), a gas distribution box (7), and a high-temperature flue outlet (8), wherein the outlet of the centrifugal fan device (2) is connected to the inlet of the centrifugal fan device outlet flexible connection (3); one end of the centrifugal fan rear connecting channel (4) is connected to the outlet of the centrifugal fan device outlet flexible connection (3), and the other end is connected to the gas oxidation device outlet. (1) connection; a low-pressure fluid delivery pipeline (6) is installed between the side end surface of the centrifugal fan rear connection channel (4) and the gas distribution box (7), and a pneumatic flow control valve (5) is installed on the low-pressure fluid delivery pipeline (6); a gas distribution box (7) and a high-temperature flue outlet (8) are installed above the gas oxidation device (1), the gas distribution box (7) is provided with a gas distribution box connection inlet (701) and a plurality of gas distribution box connection outlets (706), and the plurality of gas distribution box connection outlets (706) are connected to the high-temperature flue outlet (8), and a wire mesh filter element (708) is installed inside the box body of the gas distribution box (7).

[0006] Preferably, the above-mentioned gas distribution box (7) includes a gas distribution box connection inlet (701), a gas distribution box body (702), a gas distribution box body cover (703), a gas distribution box drain valve (704), a gas distribution box support leg (705), a gas distribution box connection outlet (706), a gas distribution box connection outlet metal hose (707), and a wire mesh filter element (708). One side of the gas distribution box body (702) is equipped with a gas distribution box connection inlet (701), and the other side is equipped with multiple A gas distribution box connection outlet (706) is provided, and a gas distribution box connection outlet metal hose (707) is installed on each gas distribution box connection outlet (706); a gas distribution box cover plate (703) is installed on the upper side of the gas distribution box body (702), a gas distribution box drain valve (704) is installed in the middle of the lower end, and a plurality of gas distribution box legs (705) are installed on the lower surface of the gas distribution box body (702); and a wire mesh filter element (708) is installed in the inner cavity of the gas distribution box body (702).

[0007] Preferably, the gas distribution box connection inlet (701) is welded to the front side of the gas distribution box body (702), and the gas distribution box connection outlet (706) is welded to the rear side of the gas distribution box body (702).

[0008] Preferably, the gas distribution box body cover plate (703) is fixed to the upper side of the gas distribution box body (702) by means of bolts, and the plurality of gas distribution box connection outlets (706) and the plurality of gas distribution box connection outlet metal hoses (707) are fixedly connected by means of bolts.

[0009] Preferably, the pneumatic flow control valve (5) is an electric flow control valve, which outputs ultra-low concentration gas through the side of the centrifugal fan rear connecting channel (4) to adjust the high-temperature flue gas at the high-temperature flue outlet (8).

[0010] The beneficial effects of the utility model are:

[0011] The utility model performs secondary regulation of the high-temperature flue gas condition at the high-temperature flue outlet according to the ultra-low concentration gas (concentration ≤ 1.2%) output by the centrifugal fan device and the flow control of the pneumatic flow control valve. Compared with the traditional gas oxidation device without adjusting the high-temperature flue outlet temperature, the utility model solves the control problem of the high-temperature flue outlet temperature requirement and improves the service life and overall operation efficiency of the waste heat utilization equipment connected to the high-temperature flue outlet of the gas oxidation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of the utility model;

[0013] Figure 2 It is a top view of the utility model;

[0014] Figure 3It is a left view of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the gas distribution box;

[0016] Figure 5 It is a schematic diagram of the air distribution box from a top view;

[0017] Figure 6 yes Figure 4 A schematic diagram of the structure in the left viewing direction;

[0018] Figure 7 yes Figure 5 AA rotation section diagram;

[0019] Figure 8 yes Figure 6 A schematic diagram of the structure in the left viewing direction;

[0020] In the above figure: gas oxidation device 1, centrifugal fan device 2, centrifugal fan device outlet flexible connection 3, centrifugal fan rear connection channel 4, pneumatic flow regulating valve 5, low-pressure fluid delivery pipeline 6, gas distribution box 7, high-temperature flue outlet 8, gas distribution box connection inlet 701, gas distribution box body 702, gas distribution box body cover 703, gas distribution box drain valve 704, gas distribution box support leg 705, gas distribution box connection outlet 706, gas distribution box connection outlet metal soft 707, wire mesh filter element 708. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] Example 1, reference Figure 1-Figure 8 The utility model mentions a two-stage regulating and controlling device for high-temperature flue gas of a gas oxidation device, comprising a centrifugal fan device 2, a centrifugal fan device outlet soft connection 3, a centrifugal fan rear connecting channel 4, a pneumatic flow regulating valve 5, a low-pressure fluid delivery pipeline 6, a gas distribution box 7, and a high-temperature flue outlet 8. The outlet of the centrifugal fan device 2 is connected to the inlet of the centrifugal fan device outlet soft connection 3; one end of the centrifugal fan rear connecting channel 4 is connected to the outlet of the centrifugal fan device outlet soft connection 3, and the other end is connected to the gas oxidation device outlet. The device 1 is connected; a low-pressure fluid delivery pipeline 6 is installed between the side end surface of the centrifugal fan rear connecting channel 4 and the air distribution box 7, and a pneumatic flow regulating valve 5 is installed on the low-pressure fluid delivery pipeline 6; the air distribution box 7 and the high-temperature flue outlet 8 are installed above the gas oxidation device 1, and the air distribution box 7 is provided with an air distribution box connection inlet 701 and multiple air distribution box connection outlets 706, and the multiple air distribution box connection outlets 706 are connected to the high-temperature flue outlet 8, and a wire mesh filter element 708 is installed inside the box body of the air distribution box 7.

[0023] Reference Figure 4-Figure 8 The gas distribution box 7 mentioned in the utility model includes a gas distribution box connection inlet 701, a gas distribution box body 702, a gas distribution box body cover 703, a gas distribution box drain valve 704, a gas distribution box support leg 705, a gas distribution box connection outlet 706, a gas distribution box connection outlet metal hose 707, and a wire mesh filter element 708. One side of the gas distribution box body 702 is equipped with an gas distribution box connection inlet 701, and the other side is equipped with multiple gas distribution box connection outlets 706, and each gas distribution box connection outlet 706 is equipped with a gas distribution box connection outlet metal hose 707; the gas distribution box body cover 703 is installed on the upper side of the gas distribution box body 702, the gas distribution box drain valve 704 is installed in the middle of the lower end, and multiple gas distribution box support legs 705 are installed on the lower surface of the gas distribution box body 702; the wire mesh filter element 708 is installed in the inner cavity of the gas distribution box body 702.

[0024] The gas oxidation device 1 and the centrifugal fan device 2 are both arranged on a civil engineering foundation with a flat surface, and the gas oxidation device 1 and the centrifugal fan device 2 are spaced a certain distance apart from each other.

[0025] The above-mentioned air distribution box connection inlet 701 is welded to the front side of the air distribution box body 702, and the above-mentioned air distribution box connection outlet 706 is welded to the rear side of the air distribution box body 702.

[0026] The above-mentioned gas distribution box body cover plate 703 is fixed to the upper side of the gas distribution box body 702 by bolts, and the multiple gas distribution box connection outlets 706 and the multiple gas distribution box connection outlet metal hoses 707 are fixedly connected by bolts.

[0027] The pneumatic flow regulating valve 5 adopts an electric flow regulating valve, which outputs ultra-low concentration gas through the side of the centrifugal fan rear connecting channel 4 to adjust the high-temperature flue gas at the high-temperature flue outlet 8.

[0028] The gas oxidation device mentioned in the utility model is a place where ultra-low gas concentration ≤1.2% reacts to provide a heat source for waste heat utilization equipment; a centrifugal fan device is used to transport ultra-low gas concentration ≤1.2% to the gas oxidation device, and at the same time provide a gas source for the process design of secondary precise regulation and temperature control of high-temperature flue gas; a pneumatic flow regulating valve is installed between the centrifugal fan rear connecting channel and the gas distribution box connecting inlet, and the pneumatic flow regulating valve is installed near the side end surface outlet of the centrifugal fan rear connecting channel; a gas distribution box, the gas distribution box is installed above the gas oxidation device, the gas distribution box includes: a gas distribution box connecting inlet, a gas distribution box body, a gas distribution box body cover, a gas distribution box drain valve, a gas distribution box leg, a gas distribution box connecting outlet, a gas distribution box connecting outlet metal flexible connection and a wire mesh filter element; a high-temperature flue outlet is connected to the gas oxidation device; in addition, the wire mesh filter element 708 is used to filter moisture and impurities in ultra-low gas concentration ≤1.2%. The utility model solves the problem of controlling the temperature requirement of the high-temperature flue outlet, and improves the service life and overall operation efficiency of the waste heat utilization equipment connected to the high-temperature flue outlet of the gas oxidation device.

[0029] When the utility model is used, the centrifugal fan device 2 mainly functions to convey ultra-low concentration gas with a concentration of ≤1.2% to the gas oxidation device 1, complete the oxidation reaction and release heat, and also provide a gas source for the secondary temperature control of the high-temperature flue gas; under normal working conditions, the temperature of the high-temperature flue gas at the high-temperature flue outlet 8 is 950°C. If the temperature of the high-temperature flue gas at the high-temperature flue outlet 8 is greater than 950°C, the centrifugal fan device 2 is used to convey ultra-low concentration gas as a medium with a concentration of ≤1.2%. By controlling the opening size of the pneumatic flow regulating valve 5, the ultra-low concentration gas is sequentially conveyed along the low-pressure fluid conveying pipeline 6 and the gas distribution box 7 into the high-temperature flue outlet 8, thereby achieving the purpose of regulating the high-temperature flue gas at the high-temperature flue outlet 8; at the same time, the ultra-low concentration gas that directly enters the high-temperature flue outlet 8 along the low-pressure fluid conveying pipeline 6 and the gas distribution box 7 will also oxidize and release heat, and its heat release capacity is less than its secondary precise regulation and temperature control capacity.

[0030] Embodiment 2, the utility model mentions a two-level regulation and control device for high-temperature flue gas of a gas oxidation device, comprising a centrifugal fan device 2, a centrifugal fan device outlet flexible connection 3, a centrifugal fan rear connecting channel 4, a pneumatic flow regulating valve 5, a low-pressure fluid delivery pipeline 6, an air distribution box 7, and a high-temperature flue outlet 8, wherein the outlet of the centrifugal fan device 2 is connected to the inlet of the centrifugal fan device outlet flexible connection 3; one end of the centrifugal fan rear connecting channel 4 is connected to the outlet of the centrifugal fan device outlet flexible connection 3, and the other end is connected to the gas oxidation device 1; a low-pressure fluid delivery pipeline 6 is installed between the side end surface position of the centrifugal fan rear connecting channel 4 and the air distribution box 7, and a pneumatic flow regulating valve 5 is installed on the low-pressure fluid delivery pipeline 6; the air distribution box 7 and the high-temperature flue outlet 8 are installed above the gas oxidation device 1.

[0031] The difference from Example 1 is:

[0032] The adjustable and controlled gas source of the high-temperature flue outlet can be connected to the air inlet duct inside the gas oxidation device, which can also solve the control problem of the high-temperature flue outlet temperature requirement and improve the service life and overall operating efficiency of the waste heat utilization equipment connected to the high-temperature flue outlet of the gas oxidation device.

[0033] The above is only a preferred embodiment of the utility model. Any person skilled in the art may modify the utility model by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent transformation based on the technical solution of the utility model shall fall within the scope of protection claimed by the utility model.

Claims

1. A two-stage regulation and control device for high-temperature flue gas in a gas oxidation device, characterized by: The invention comprises a centrifugal fan device (2), a centrifugal fan device outlet flexible connection (3), a centrifugal fan rear connection channel (4), a pneumatic flow regulating valve (5), a low-pressure fluid delivery pipeline (6), a gas distribution box (7), and a high-temperature flue outlet (8), wherein the outlet of the centrifugal fan device (2) is connected to the inlet of the centrifugal fan device outlet flexible connection (3); one end of the centrifugal fan rear connection channel (4) is connected to the outlet of the centrifugal fan device outlet flexible connection (3), and the other end is connected to the gas oxidation device (1); ... gas oxidation device (1) is connected to the centrifugal fan device outlet flexible connection (3). ) is installed between the side end surface of the gas oxidizing device (1) and the gas distribution box (7), and a pneumatic flow regulating valve (5) is installed on the low-pressure fluid delivery pipeline (6); a gas distribution box (7) and a high-temperature flue outlet (8) are installed above the gas oxidation device (1), the gas distribution box (7) is provided with a gas distribution box connecting inlet (701) and a plurality of gas distribution box connecting outlets (706), and the plurality of gas distribution box connecting outlets (706) are connected to the high-temperature flue outlet (8), and a wire mesh filter element (708) is installed inside the box body of the gas distribution box (7).

2. The high-temperature flue gas two-stage regulating and controlling device for a gas oxidation device according to claim 1 is characterized in that: The gas distribution box (7) comprises a gas distribution box connection inlet (701), a gas distribution box body (702), a gas distribution box body cover (703), a gas distribution box drain valve (704), a gas distribution box support leg (705), a gas distribution box connection outlet (706), a gas distribution box connection outlet metal hose (707), and a wire mesh filter element (708). One side of the gas distribution box body (702) is equipped with a gas distribution box connection inlet (701), and the other side is equipped with a plurality of gas distribution boxes. An air box connection outlet (706) is provided, and a metal air box connection outlet hose (707) is installed on each air box connection outlet (706); an air box cover plate (703) is installed on the upper side of the air box body (702), an air box drain valve (704) is installed in the middle of the lower end, and a plurality of air box legs (705) are installed on the lower surface of the air box body (702); and a wire mesh filter element (708) is installed in the inner cavity of the air box body (702).

3. The high-temperature flue gas two-stage regulating and controlling device for a gas oxidation device according to claim 2 is characterized in that: The gas distribution box connection inlet (701) is welded to the front side of the gas distribution box body (702), and the gas distribution box connection outlet (706) is welded to the rear side of the gas distribution box body (702).

4. The high-temperature flue gas two-stage regulating and controlling device for a gas oxidation device according to claim 3 is characterized in that: The gas distribution box body cover plate (703) is fixed to the upper side of the gas distribution box body (702) by means of bolts, and the plurality of gas distribution box connection outlets (706) and the plurality of gas distribution box connection outlet metal hoses (707) are fixedly connected by means of bolts.

5. The high-temperature flue gas two-stage regulating and controlling device for a gas oxidation device according to claim 3 is characterized in that: The pneumatic flow control valve (5) adopts an electric flow control valve, which outputs ultra-low concentration gas through the side of the centrifugal fan rear connecting channel (4) to adjust the high-temperature flue gas at the high-temperature flue outlet (8).

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