Simple cooling, sulfur-reducing and dust-removing device for high-temperature flue gas

Abstract

The utility model relates to the technical field of flue gas, and discloses a simple cooling, sulfur-reducing and dust-removing device for high-temperature flue gas, which comprises a flue used for being connected with a flue gas channel to be treated, a cooling nozzle is arranged in the flue, the cooling nozzle is communicated with a cooling water pipe, and a cooling water source is communicated with the cooling water pipe to supply cooling water to the cooling nozzle. The device is simple in structure, low in failure rate, convenient to repair and maintain, capable of meeting the cooling and dust removal requirements of high-temperature flue gas and improving the follow-up flue gas treatment effect and treatment efficiency, good in applicability and capable of reducing sulfur and removing dust. The device can be used as a standby flue gas cooling device to be modified and installed on the existing equipment, and participates in flue gas cooling in time during shutdown maintenance or when the flue gas temperature is ultrahigh and a waste heat boiler breaks down, so that the problems that the flue gas temperature cannot reach a proper temperature interval, the flue gas denitration efficiency is insufficient and the pollutant emission concentration exceeds the standard are solved, and the application of the PID control module is beneficial to the popularization and application of the device. The automation control degree of the device is improved, and the control precision is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue gas treatment technical field especially, relate to a high temperature flue gas simple cooling sulfur removal dust collector. BACKGROUND

[0002] Current glass industry's flue gas treatment process, denitration adopts high temperature electric dust collector + SCR denitration technology, and desulfurization process basically adopts semi-dry process, and a small part adopts wet method (double alkali method, limestone gypsum method etc.). The processing temperature of traditional denitration, desulfurization and dust removal is inconsistent, needs to be combined with waste heat boiler and is treated in different temperature sections respectively, causes that the existing flue gas treatment equipment structure configuration is complex, the treatment process is relatively complicated, and maintenance is inconvenient, and there is a vacuum period of shutdown maintenance, during which the flue gas treatment equipment cannot be normally put into operation, leads to that flue gas is directly discharged and pollutes the environment. If spare treatment equipment is configured, the cost investment of glass production enterprises is increased substantially. It is known in the industry that, in industry, before denitration of high temperature flue gas, the high temperature flue gas is usually reduced to the appropriate interval temperature through the waste heat boiler and then the denitration reaction is carried out. The applicability of the existing treatment equipment needs to be further improved, if the flue gas temperature is too high or the waste heat boiler fails, the high temperature flue gas to be treated cannot be effectively cooled, and the flue gas temperature cannot reach the suitable temperature interval, which will cause that the flue gas denitration efficiency is insufficient, and the pollutant emission concentration exceeds the standard.

[0003] Therefore, developing a kind of high temperature flue gas simple cooling sulfur removal dust collector and applying to production actuality are the current problems to be solved. CONTENT OF THE UTILITY MODEL

[0004] The utility model is directed to the above problems, provide a kind of high temperature flue gas simple cooling sulfur removal dust collector, to solve the problem that the existing flue gas treatment equipment structure configuration is complex, maintenance is inconvenient, simultaneously solve the problem that the applicability of the existing flue gas treatment device is not good.

[0005] To solve the above technical problems, the technical scheme adopted by the utility model is as follows:

[0006] A kind of high temperature flue gas simple cooling sulfur removal dust collector, including the flue for connecting the flue gas channel to be treated, cooling nozzle is arranged in the flue, the cooling nozzle is communicated with cooling water pipe, and cooling water source is communicated with cooling water pipe to supply cooling water for cooling nozzle.

[0007] Preferably, the cooling nozzle is a high-pressure atomizing fan-shaped nozzle, and the cooling nozzle is provided with one or more according to the size of the cross-sectional area of the flue.

[0008] Preferably, the flue is also provided with a sulfur removal nozzle, and the sulfur removal nozzle is communicated with a sodium carbonate solution storage tank through a liquid supply pipe.

[0009] Preferably, a flow regulating valve is arranged on the cooling water pipe to regulate the spraying amount of the cooling nozzle to meet the treatment requirements of different flue gas to be treated.

[0010] Preferably, the temperature reducing, sulfur reducing and dust removing device further comprises a PID control module, the flow regulating valve is communicatively connected with the PID control module, and the inlet end and the outlet end of the flue are respectively provided with temperature sensors for monitoring the flue gas temperatures at the inlet end and the outlet end of the flue.

[0011] Preferably, a speed-regulating water pump is arranged on the cooling water pipe, and the speed-regulating water pump is communicatively connected with the PID control module.

[0012] The utility model discloses the beneficial effect lies in:

[0013] The utility model discloses simple structure, low failure rate, maintenance is convenient, can satisfy the cooling of high temperature flue gas, dust removing demand, has promoted the follow -up flue gas treatment effect and processing efficiency, simultaneously, the dust and other impurities of entrainment in the flue gas will settle to the bottom of the flue after meeting atomized cooling water, plays the role of flue gas dust removing. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model will be further explained in detail in connection with the drawings and specific embodiment.

[0015] Figure 1 It is the structural schematic diagram of the utility model.

[0016] In the drawing: 10 -- flue, 11 -- cooling nozzle, 12 -- cooling water pipe, 13 -- cooling water source, 14 -- sulfur reducing nozzle, 15 -- liquid supply pipe, 16 -- sodium carbonate solution storage tank, 17 -- flow regulating valve, 18 -- speed-regulating water pump, 20 -- ceramic filter pipe, 30 -- PID control module, 31 -- temperature sensor, 40 -- chimney.

[0017] The arrow in the drawing shows the flue gas flow direction. DETAILED DESCRIPTION

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] like Figure 1 As shown, a simple high-temperature flue gas cooling, desulfurization, and dust removal device includes a flue 10. A cooling nozzle 11 is installed within the flue 10, and the cooling nozzle 11 is connected to a cooling water pipe 12. A cooling water source 13, connected to the cooling water pipe 12, supplies cooling water to the cooling nozzle 11. The cooling nozzle 11 is a high-pressure atomizing fan-shaped nozzle to achieve better atomization and a larger spray area. In use, the flue 10 is connected to the flue gas channel to be treated. The cooling water pipe 12 supplies cooling water from the cooling water source 13 to the cooling nozzle 11. The cooling nozzle 11 fully atomizes the cooling water and sprays it evenly within the flue 10, cooling the flue gas flowing through the flue 10. The fully atomized cooling water increases the contact area with the flue gas, improving the cooling efficiency and quickly cooling the flue gas to a suitable temperature. The cooled flue gas then enters a ceramic filter tube for further desulfurization and denitrification treatment. The treated, compliant flue gas is discharged through a chimney 40.

[0020] This implementation method features a simple structure, low failure rate, and convenient maintenance. It can meet the cooling and dust removal needs of high-temperature flue gas, improving the subsequent flue gas treatment effect and efficiency. Simultaneously, dust and other impurities carried in the flue gas will settle to the bottom of the flue duct 10 after encountering atomized cooling water, thus playing a role in flue gas dust removal. Furthermore, this implementation method can be retrofitted and installed on existing flue gas treatment equipment as a backup flue gas cooling device. During shutdown maintenance periods or in situations such as excessively high flue gas temperature or waste heat boiler malfunction, it can promptly participate in flue gas cooling, preventing the flue gas temperature from falling below the suitable range, which could lead to insufficient flue gas denitrification efficiency and excessive pollutant emission concentrations.

[0021] Preferably, one or more cooling nozzles 11 are provided according to the cross-sectional area of ​​the flue 10, so that the spraying area of ​​the cooling nozzles 11 covers more than 90% of the cross-sectional area of ​​the flue 10.

[0022] Preferably, the flue 10 is also provided with a sulfur reduction nozzle 14, which is communicated with a sodium carbonate solution storage tank 16 through a liquid supply pipe 15. In use, the liquid supply pipe 15 supplies the sodium carbonate solution supplied by the sodium carbonate solution storage tank 16 into the sulfur reduction nozzle 14, the sulfur reduction nozzle 14 fully atomizes and uniformly sprays the sodium carbonate solution in the flue 10, and the flue 10 is desulfurized, so that the flue gas treatment device has the function of flue gas desulfurization. In the embodiment, the sulfur reduction nozzle 14 also adopts a high-pressure atomizing fan-shaped nozzle to ensure the atomization effect and the spraying range, and to ensure the desulfurization effect. At the same time, the atomized sodium carbonate solution also has the function of flue gas cooling, which can effectively improve the flue gas cooling efficiency. In addition, the sulfur reduction nozzle 14 can be opened synchronously with the cooling nozzle, or can be opened and used alone when the water cooling pipe is inspected and maintained, so as to ensure the continuous and stable production process.

[0023] Preferably, the cooling water pipe 12 is provided with a flow regulating valve 17 for adjusting the spraying amount of the cooling nozzle 11 to meet the treatment requirements of different flue gas to be treated. When the temperature of the flue gas to be treated flowing through the flue 10 is high, the flow of the cooling water pipe 12 is increased by adjusting the flow regulating valve 17, and the spraying amount of the cooling nozzle 11 is increased, so as to improve the flue gas cooling efficiency. The flue gas cooling device can meet the use requirements of different flue gas flow, temperature and other working conditions, and the applicability is improved.

[0024] Preferably, the cooling, desulfurization and dust removal device further comprises a PID control module 30, and the flow regulating valve 17 is communicatively connected with the PID control module 30. The inlet end and the outlet end of the flue 10 are both provided with temperature sensors 31 for monitoring the flue gas temperature at the inlet end and the outlet end of the flue 10, and the temperature sensors 31 are communicatively connected with the PID control module 30. In use, the PID control module 30 collects the real-time temperature at the inlet end and the outlet end of the flue 10, and controls the flow regulating valve 17 to automatically adjust the flow of the cooling water pipe 12 according to the collected temperature data, so as to accurately control the outlet flue gas temperature to meet the process requirements.

[0025] Preferably, a speed-regulating water pump 18 is installed on the cooling water pipe 12 to ensure the water supply amount of the cooling water pipe 12 and ensure the cooling effect. The speed-regulating water pump 18 is communicatively connected with the PID control module 30 to realize automatic control of the rotating speed of the speed-regulating water pump 18.

[0026] The above disclosure is only a specific embodiment of the flue gas cooling device, but the flue gas cooling device is not limited to this. For those skilled in the art, without departing from the principle of the flue gas cooling device, any modification should be considered as belonging to the protection of the flue gas cooling device.

Claims

1. A high-temperature flue gas simple cooling, sulfur removal and dust removal device, characterized in that: The flue (10) is provided with cooling nozzles (11) therein, the cooling nozzles (11) are communicated with cooling water pipes (12), and a cooling water source (13) is communicated with the cooling water pipes (12) to supply cooling water to the cooling nozzles (11); The cooling nozzles (11) are high-pressure atomizing fan-shaped nozzles, one or more cooling nozzles (11) are arranged according to the cross-sectional area of the flue (10), and the spraying range of the cooling nozzles (11) covers more than 90% of the cross-sectional area of the flue (10); The flue (10) is further provided with sulfur-reducing nozzles (14) therein, the sulfur-reducing nozzles (14) are communicated with sodium carbonate solution storage tanks (16) through liquid supply pipes (15); The cooling water pipes (12) are provided with flow regulating valves (17) for regulating the spraying amount of the cooling nozzles (11) to meet the treatment requirements of different flue gas to be treated; The temperature sensors (31) are communicated with the PID control module (30). The cooling water pipes (12) are provided with speed-regulating water pumps (18) which are communicated with the PID control module (30).

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