Cyclic furnace waste gas incineration device

Abstract

The utility model relates to a waste gas incineration device for a periodic furnace. The waste gas incineration device comprises an RX input pipe, an incineration chamber, a burner, a thermometer and a controller, the RX input pipe is used for independently inputting RX gas into the periodic furnace, and a detection unit capable of detecting the RX gas is arranged on the RX input pipe; the incineration chamber is arranged on a waste gas output pipe of the cycle furnace, an air inlet communicated with the outside is formed in the bottom of the incineration chamber, the output end of the waste gas output pipe enters the incineration chamber through the air inlet, and an air circulation gap is formed between the waste gas output pipe and the air inlet; an exhaust port communicated with the outside is formed in the top of the incineration chamber, and a negative pressure fan is arranged on the exhaust port. According to RX gas input data obtained by the detection unit, the burner can be started in advance for preheating before emission of a harmful waste gas section, and the burner can be closed in time after emission of the harmful waste gas section is finished, so that fuel waste is effectively reduced while the combustion effect of the incineration chamber is guaranteed, and economical efficiency and environmental protection performance are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas incineration treatment technical field, specifically related to a periodical furnace waste gas incineration device. BACKGROUND

[0002] RX gas is a kind of endothermic atmosphere, composition mainly includes nitrogen, hydrogen, carbon monoxide and water vapor etc. The waste gas generated by the periodical furnace using RX gas includes hydrogen, carbon monoxide, and directly discharging into air will cause pollution, usually needs to incinerate the waste gas.

[0003] But in actual use, periodical furnace is not needed to be always connected RX gas, but is periodically intermittent, and only when RX gas is connected, hydrogen and carbon monoxide are contained in the exhaust gas, need to be burned;And before RX gas is connected to periodical furnace, hydrogen and carbon monoxide are not contained in the exhaust gas, can be directly discharged to air, so the exhaust gas treatment of periodical furnace should also be intermittent.

[0004] But in prior art, when the waste gas is burned, the incineration chamber needs to be maintained at 600 DEG C, and the temperature is too low to cause the waste gas to be insufficiently burned, and the temperature is too high to cause oxygen to be rapidly consumed and thus the waste gas to be insufficiently burned, so the existing technology usually continuously opens the nozzle for injecting flame to maintain the temperature of incineration chamber, resulting in excessive fuel loss, but if the nozzle is intermittently opened to try to reduce waste, the problem of difficult to quickly and accurately detect whether hydrogen, carbon monoxide and other combustible harmful gases exist in the waste gas is faced, and after detection, the incineration chamber is difficult to quickly heat to the specified temperature, so that the waste gas is insufficiently burned.

[0005] Based on this, it is necessary to study a periodical furnace waste gas incineration device. UTILITY MODEL CONTENTS

[0006] In view of this, the purpose of the utility model is to provide a periodical furnace waste gas incineration device, which can effectively solve the problem that the burner is continuously opened to cause excessive fuel loss and intermittently opened to cause delayed heating.

[0007] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is:

[0008] A periodical furnace waste gas incineration device, comprising an RX input pipe, an incineration chamber, a burner, a thermometer and a controller;

[0009] The RX input pipe is used to separately input RX gas to the periodical furnace, and a detection unit capable of detecting RX gas is arranged on the RX input pipe;

[0010] The incineration chamber is arranged on the exhaust gas output pipe of the periodical furnace, and the bottom of the incineration chamber is provided with an air inlet in communication with the outside,

[0011] The output end of the waste gas output pipe enters the incineration chamber through the air inlet, and an air flow gap is formed between the waste gas output pipe and the air inlet;

[0012] The top of the incineration chamber is provided with an exhaust port in communication with the outside, and a negative pressure fan is arranged on the exhaust port;

[0013] The burner and the thermometer are arranged in the incineration chamber, and the burner, the detection unit and the thermometer are connected with the controller.

[0014] Further, the incineration chamber comprises an inner chamber and an outer chamber, the air inlet and the exhaust port are arranged on the inner chamber,

[0015] The outer chamber is sleeved on the outer surface of the inner chamber, and a hot gas interlayer is formed between the outer chamber and the outer surface of the inner chamber, the upper part of the hot gas interlayer is in communication with the exhaust port, and the lower part of the air interlayer is provided with a tail gas port in communication with the outside.

[0016] Further, the tail gas port is provided with a drainage slope surface extending away from the air inlet.

[0017] Further, the top of the inner chamber is provided with a necking portion with a small upper part and a large lower part, and the negative pressure fan is arranged on the top of the necking portion.

[0018] Further, the output end of the waste gas output pipe is fixedly connected with a mounting bracket, the burner is fixed on the mounting bracket, and the output port of the burner faces the output end of the waste gas output pipe.

[0019] The beneficial effects of the above technical scheme are:

[0020] The utility model discloses a single RX gas input pipe is arranged on the periodical furnace, and a detection unit is arranged on the RX input pipe, which is used for real-time detection of the input state of RX gas, obtaining the start time, the termination time and the duration of RX gas input, and calculating the start time, the termination time and the duration of the combustible harmful waste gas section discharge, so that the burner can be started in advance for preheating before the combustible harmful waste gas section discharge, ensuring that the required combustion temperature is reached in the incineration chamber when the waste gas enters the incineration chamber, and the incomplete waste gas treatment problem caused by temperature lag is solved. Meanwhile, after the harmful waste gas section discharge is finished, the controller can timely close the burner, avoids the long-time idling of the burner, reduces fuel consumption, effectively reduces fuel waste while ensuring the combustion effect of the incineration chamber, and significantly improves the economy and environmental protection. ACCOUT OF DRAWINGS

[0021] Figure 1 It is a schematic view of the utility model;

[0022] Figure 2 It is a sectional view of the incineration chamber of the utility model.

[0023] The reference signs: 1 is a periodic furnace, 2 is an RX input pipe, 3 is a waste gas output pipe, 4 is a detection unit, 5 is a burning chamber, 6 is a burner, 7 is a thermometer, 8 is a negative pressure fan, 9 is a mounting frame, 10 is a fixing frame, 501 is an air inlet, 502 is an air outlet, 503 is an inner chamber, 504 is an outer chamber, 505 is a hot air interlayer, 506 is a closing part, 507 is a tail gas port, and 508 is a drainage slope. DETAILED DESCRIPTION

[0024] The utility model will be described in further detail below in combination with the drawings and specific embodiments:

[0025] The embodiment aims to provide a periodic furnace waste gas burning device, which is mainly used for burning the waste gas of a periodic furnace using RX gas, and aims at the problem that continuous opening of the burner will cause excessive fuel loss and intermittent opening will cause delayed temperature rise.

[0026] A periodic furnace waste gas burning device, such as Figure 1 , includes an RX input pipe 2, a burning chamber 5, a burner 6, a thermometer 7, and a controller. The RX input pipe 2 is used to separately input RX gas to the periodic furnace 1, and a detection unit 4 capable of detecting RX gas is arranged on the RX input pipe 2. The detection unit 4 is mainly used to detect the start time and end time of RX gas input, and obtain the duration of RX gas input. The detection unit 4 can adopt a flow switch, a flow meter, etc.

[0027] The burning chamber 5 is arranged on the waste gas output pipe 3 of the periodic furnace 1. Specifically, the side wall of the burning chamber 5 is fixedly connected with the periodic furnace 1 through a fixing frame 10 to provide a fixed basis for the burning chamber 5. As shown in Figure 2 , the bottom of the burning chamber 5 is provided with an air inlet 501 communicating with the outside. The output end of the waste gas output pipe 3 enters the burning chamber 5 through the air inlet 501, and an air flow gap is formed between the waste gas output pipe 3 and the air inlet 501 to avoid the waste gas output pipe 3 from blocking the air inlet 501, so as to inhale air from the outside to obtain oxygen for combustion. The top of the burning chamber 5 is provided with an air outlet 502 communicating with the outside, and the air outlet 502 is provided with a negative pressure fan 8. The negative pressure fan 8 provides air power to the air inlet 501 towards the inside of the burning chamber 5, which can inhale air from the outside and form air pressure blocking to prevent harmful waste gas from leaking to the outside through the air inlet 501.

[0028] The burner 6 and the thermometer 7 are arranged in the incineration chamber 5, the burner 6 can spray flame for igniting the combustible harmful gas and maintaining the temperature in the incineration chamber. The thermometer 7 is used for detecting the temperature of the incineration chamber and feeding back the temperature data to the controller in real time. The controller adopts a PLC controller, the controller can control the opening and closing and the output power of the burner 6, combined with the data fed back by the thermometer 7, the temperature of the incineration chamber 5 is maintained when the incineration chamber 5 is working. The specific method for maintaining the temperature of the incineration chamber 5 is mainly adjusting the power of the burner 6 by the controller, and the specific control method can adopt a PID closed-loop control method, and the specific method and principle adopt the prior art, which will not be described here.

[0029] The detection unit 4 is connected with the controller and inputs the collected data to the controller for processing. Since the periodic furnace 1 has a stable specific relationship between the input and the corresponding output of the RX gas when it is stably operated under certain parameters, the specific relationship can be obtained by calculation according to the actual operating parameters, or can be obtained by a limited number of tests. The controller can calculate the theoretical start time, end time and duration of the harmful waste gas section containing combustible harmful waste gas, based on the input data of the RX gas and the specific relationship between the input and the output, based on which the controller starts the burner 6 before the start time of the theoretical output of the harmful waste gas section, so that the burner 6 preheats the incineration chamber, so that when the harmful waste gas section starts to output, the incineration chamber 5 has reached the required combustion temperature, and the harmful waste gas can be fully combusted at the specified temperature, so as to solve the problem of incomplete waste gas treatment caused by temperature lag. The specific advance time needs to be obtained through actual test according to the power of the burner 6, the size of the incineration chamber and other factors. The controller closes the burner 6 after a short delay after the end time of the theoretical output of the harmful waste gas section, which provides a redundant time for the duration of the opening of the burner 6, avoids the situation that when the actual harmful waste gas output time is later than the theoretical time, the output of the harmful waste gas has not yet terminated and the burner 6 has been closed, which leads to insufficient combustion. The specific delay time also needs to be selected according to the actual test data and the fluctuation range of the error.

[0030] Further, as Figure 2, the incineration chamber comprises an inner chamber 503 and an outer chamber 504, the air inlet 501 and the air outlet 502 are arranged on the inner chamber 503. The outer chamber 504 is sleeved on the outer surface of the inner chamber 503, the connecting rod is arranged between the outer chamber 504 and the inner chamber 503 to form a fixed base, the heat air layer 505 is formed between the outer chamber 504 and the outer surface of the inner chamber 503, the upper part of the heat air layer 505 is communicated with the air outlet 502, and the lower part of the air layer is provided with the tail gas outlet 507 communicated with the outside. When the incineration chamber works, the heated hot air enters the heat air layer 505 through the air outlet 502, and then is discharged to the outside through the tail gas outlet 507, so that the heat air layer 505 forms a heat preservation layer, reduces the heat dissipation, and is beneficial to maintaining the temperature of the incineration chamber.

[0031] Further, the tail gas outlet 507 is provided with a drainage slope 508 extending away from the air inlet 501, so that the discharged hot air can be discharged away from the air inlet 501, so as to reduce the influence on the air inlet and ensure the oxygen content of the air inlet.

[0032] Further, the top of the inner chamber 503 is provided with a necking portion 506 with a large lower part and a small upper part, and the negative pressure fan 8 is arranged at the top of the necking portion 506, so that the gas can be guided and collected in the necking portion 506 area, and the gas is concentrated to flow to the negative pressure fan 8, the negative pressure effect is improved, and the air passage is smooth.

[0033] Further, the output end of the waste gas output pipe 3 is fixedly connected with a mounting frame 9, the burner 6 is fixed on the mounting frame 9, and the output port of the burner 6 faces the output end of the waste gas output pipe 3, so that the burner 6 can ignite the waste gas.

Claims

1. A periodic furnace waste gas incineration device, characterized in that: Includes RX input tube, combustion chamber, burner, thermometer and controller; The RX input tube is used to input RX gas into the cycle furnace separately, and the RX input tube is equipped with a detection unit that can detect RX gas. The incineration chamber is located on the exhaust gas outlet pipe of the cycle furnace, and an air inlet communicating with the outside is located at the bottom of the incineration chamber. The output end of the exhaust gas output pipe enters the incineration chamber through the air inlet, and an air flow gap is formed between the exhaust gas output pipe and the air inlet. The top of the incineration chamber is equipped with an exhaust port that communicates with the outside, and a negative pressure fan is installed on the exhaust port. The burner and thermometer are both installed in the combustion chamber, and the burner, detection unit, and thermometer are all connected to the controller.

2. The periodic furnace waste gas incineration device according to claim 1, characterized in that: The incineration chamber includes an inner chamber and an outer chamber, with both the air inlet and exhaust outlet located in the inner chamber. The outer chamber is fitted onto the outer surface of the inner chamber, forming a hot air interlayer between them. The upper part of the hot air interlayer is connected to the exhaust port, and the lower part of the air interlayer is provided with an exhaust port connected to the outside.

3. The periodic furnace waste gas incineration device according to claim 2, characterized in that: The exhaust port is provided with a drainage slope that extends away from the air inlet.

4. The periodic furnace waste gas incineration device according to claim 2, characterized in that: The top of the inner chamber is provided with a tapered section that is smaller at the top and larger at the bottom, and the negative pressure fan is located on top of the tapered section.

5. A periodic furnace waste gas incineration device according to any one of claims 1-4, characterized in that: A mounting bracket is fixedly connected to the output end of the exhaust gas output pipe, and the burner is fixed on the mounting bracket with the output port of the burner facing the output end of the exhaust gas output pipe.

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