CN217613934U - Wet deacidification purification equipment for medical waste incineration flue gas - Google Patents

Abstract

The utility model discloses a wet deacidification purification device for medical waste incineration flue gas, which comprises a purification device body for deacidifying the flue gas generated by medical waste incineration, and specifically comprises a precooling tower, a wet washing tower, a circulating alkali liquor storage tank and a wastewater tank which are arranged in a matching way, wherein the precooling tower is used for precooling and cooling the introduced flue gas, the top of the precooling tower is provided with a smoke inlet, and the bottom of the precooling tower is provided with a smoke outlet and is communicated with the smoke inlet of the wet washing tower through a flue gas pipeline; the wet scrubbing tower is used for removing acidic pollutants in the flue gas, and the top of the wet scrubbing tower is connected with the wet electric dust remover through a smoke exhaust pipeline; the circulating alkali liquor storage tank is connected with the wet washing tower through an alkali liquor conveying pipeline and is used for conveying alkali liquor into the wet washing tower; the waste water tank is communicated with a liquid discharge main pipe connected to the side wall of the lower part of the wet washing tower through a liquid discharge pipeline so as to intensively store the alkali-washed waste water and then convey the alkali-washed waste water to waste water treatment equipment for waste water treatment.

Description

Wet deacidification purification equipment for medical waste incineration flue gas

Technical Field

The utility model relates to a gas cleaning treatment facility technical field, concretely relates to medical waste incineration flue gas's wet process deacidification clarification plant.

Background

Medical waste contains a large amount of PVC high-chlorine resin and other chlorides, and the chlorine has very high activity and can react with almost all metals under high-temperature conditions to form the chloride with low melting point and high vapor pressure. After medical waste is treated by using an incineration mode, germs and pathogens in the waste can be eliminated, and harm to human bodies cannot be caused, however, in the incineration process of the waste, due to complexity and nonuniformity of components of the waste, a plurality of different chemical reactions can occur in the incineration process, generated smoke contains excessive air and carbon dioxide, and also contains components which are directly or indirectly harmful to human bodies and the environment, including dust, acid gas, dioxin, heavy metal pollution and the like. However, the existing flue gas purification equipment has low utilization rate of alkali liquor, wastes raw materials and also causes a large amount of waste liquid to be treated.

Disclosure of Invention

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a constitution simple structure, to alkali lye high-usage and waste discharge less medical waste incineration flue gas's wet process deacidification clarification plant.

The utility model aims at solving the problems that the prior art is not suitable for the prior art, and the prior art has the disadvantages that the prior art has the disadvantages of high cost, high cost and high cost, and the prior art has the disadvantages of low purification efficiency and high efficiency of the purification equipment, and the prior art has the disadvantages of low purification efficiency and high purification efficiency; the wet scrubbing tower is used for removing acidic pollutants in the flue gas, and the top of the wet scrubbing tower is connected with the wet electric dust remover through a smoke exhaust pipeline; the circulating alkali liquor storage tank is connected with the wet washing tower through an alkali liquor conveying pipeline and is used for conveying alkali liquor into the wet washing tower; and the wastewater tank is communicated with a drainage main pipe connected to the side wall of the lower part of the wet scrubbing tower through a drainage pipeline so as to intensively store the wastewater after the alkali scrubbing and then convey the wastewater to wastewater treatment equipment for wastewater treatment.

Furthermore, the wet-process washing tower comprises a first-stage alkaline washing tower and a second-stage alkaline washing tower which are arranged from bottom to top, at least three groups of spray guns are arranged in the first-stage alkaline washing tower, the liquid inlet end of the liquid discharge main pipe is connected with a liquid discharge port formed in the side wall of the lower part of the first-stage alkaline washing tower, and the liquid inlet end of the spray gun arranged in the first-stage alkaline washing tower is communicated with the liquid discharge main pipe through a waste liquid circulating pipeline so as to recycle the waste water after alkaline washing; the secondary alkaline tower is internally provided with a packing layer and at least three groups of spray guns, the bottom of the secondary alkaline tower is provided with a circulating water pipeline communicated with a circulating alkali liquor storage tank, and one side of the secondary alkaline tower, which is close to the smoke exhaust pipeline, is provided with a demister with a flushing nozzle.

Furthermore, an alkali liquor spray gun and an emergency water spray gun are arranged in the pre-cooling tower, and the liquid inlet end of the alkali liquor spray gun is communicated with the liquid drainage main pipe through a pipeline so as to carry out secondary utilization on the waste water after alkaline washing in the wet washing tower.

Furthermore, a cooling jacket layer is arranged on the pre-cooling tower, the liquid inlet end of the cooling jacket layer is communicated with an alkali liquor conveying pipeline of the circulating alkali liquor storage tank through a jacket water pipeline, and the liquid outlet end of the cooling jacket layer is communicated with the lower part of the wet washing tower through a pipeline.

The utility model has the advantages of: the utility model discloses a supporting precooling tower and the wet process scrubbing tower of arranging cool down and deacidify acid gas, and the alkali lye of precooling tower and wet process scrubbing tower washing comes from circulation alkali lye storage tank, through the manifold cycles utilization to alkali lye, can effectively improve the utilization ratio, reduce the emission of waste water. In addition, the precooling tower can perform a certain deacidification function while precooling, so that the equipment pressure of the wet washing tower is reduced, the first-stage tower adopts an empty tower design, a part of acidic substances are removed, the load of the second-stage washing tower is reduced, salt deposition can be relieved, and the continuous operation time of the washing tower is prolonged.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "transverse", "vertical", and the like are directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element indicated must have a specific direction, and therefore, the present invention should not be construed as being limited thereto.

As shown in fig. 1, the wet deacidification purification device for medical waste incineration flue gas comprises a purification device body for deacidifying flue gas generated by medical waste incineration, wherein the purification device body comprises a pre-cooling tower 1, a wet washing tower 2, a circulating alkali liquor storage tank 3 and a waste water tank 4 which are arranged in a matched manner, the pre-cooling tower 1 is used for pre-cooling and cooling introduced flue gas, a smoke inlet is formed in the top of the pre-cooling tower 1, and a smoke outlet is formed in the bottom of the pre-cooling tower 1 and is communicated with the smoke inlet of the wet washing tower 2 through a flue gas pipeline 50; the wet scrubbing tower 2 is used for removing acidic pollutants in the flue gas, and the top of the wet scrubbing tower 2 is connected with a wet electric dust remover through a smoke exhaust pipeline; the circulating alkali liquor storage tank 3 is connected with the wet scrubbing tower 2 through an alkali liquor conveying pipeline 51 and is used for conveying alkali liquor into the wet scrubbing tower 2; the waste water tank 4 is communicated with a drain main pipe 5 connected to the side wall of the lower part of the wet scrubbing tower 2 through a drain pipeline 52 so as to intensively store the alkali-washed waste water and then convey the alkali-washed waste water to a waste water treatment device for waste water treatment.

Referring to fig. 1, the wet scrubber 2 comprises a first-stage alkaline scrubber 21 and a second-stage alkaline scrubber 22 which are arranged from bottom to top, at least three groups of spray guns are arranged in the first-stage alkaline scrubber 21, a liquid inlet end of the liquid drainage main pipe 5 is connected with a liquid drainage port arranged on the side wall of the lower part of the first-stage alkaline scrubber 21, and a liquid inlet end of the spray gun arranged in the first-stage alkaline scrubber 21 is communicated with the liquid drainage main pipe 5 through a waste liquid circulation pipeline 53 so as to recycle the waste water after alkaline washing; a packing layer and at least three groups of spray guns are arranged in the secondary alkaline tower 22, a circulating water pipeline 54 communicated with the circulating alkali liquor storage tank 3 is arranged at the bottom of the secondary alkaline tower 22, and a demister 6 with a flushing spray nozzle is arranged at one side of the secondary alkaline tower 22 close to the smoke exhaust pipeline. The two-stage washing tower is made of temperature-resistant FRP and is used for removing acidic substances in the flue gas. The first-stage alkaline washing tower 21 adopts an empty tower design, removes a part of acidic substances, reduces the load of the second-stage alkaline washing tower 22, relieves salt deposition and prolongs the continuous operation time of the washing tower. A demister flap (i.e., a demister is provided with a back-flush outlet) in the secondary caustic tower 22 removes liquid droplets from the flue gas flow by the baffling effect of the demister. The demister is provided with a washing nozzle and can intermittently and automatically spray cleaning water to clean the eliminator.

Referring to fig. 1, a lye spray gun 11 and an emergency water spray gun are arranged in the pre-cooling tower 1, and a liquid inlet end of the lye spray gun 11 is communicated with a liquid discharge main pipe 5 through a pipeline 55 so as to perform secondary utilization on the wastewater after the lye washing in the wet washing tower 2. The pre-cooling tower 1 is provided with a cooling jacket layer 12, the liquid inlet end of the cooling jacket layer 12 is communicated with an alkali liquor conveying pipeline 51 of a circulating alkali liquor storage tank 3 through a jacket water pipeline 56, and the liquid outlet end of the cooling jacket layer 12 is communicated with the lower part of the wet washing tower 2 through a pipeline, so that the alkali liquor which is used as a cold source medium after heat exchange can be conveyed into the wet washing tower 2 for next circulation or discharge. Furthermore, clarification plant body still including the motorised valve that is used for detecting the PH detection module of one-level alkaline washing tower 21 play liquid end PH value and controls each pipeline, the PH value that detects through PH detection module decides the valve switching and carries out reutilization or carry to waste water tank 4 and discharge with the waste water after 2 interior alkaline washing of wet scrubbing towers.

The flue gas treated by the bag-type dust remover is cooled to about 110 to 120 ℃ through the GGH, then the flue gas sequentially enters a precooler and a wet washing tower to continuously remove residual acidic pollutants, the wet flue gas is absorbed by the wet washing tower and then is discharged from the top, then the flue gas enters a wet electric dust remover from the lower part of the wet electric dust remover, and the flue gas after wet electric dust removal enters the GGH to be used as a cold source for cooling the flue gas.

The specific embodiments described herein are merely illustrative of the principles of the present invention and its efficacy, and are not intended to limit the invention. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical idea of the present invention shall be covered by the claims of the present invention.

Claims (4)

1. The utility model provides a wet process deacidification clarification plant of medical waste incineration flue gas, is including being used for carrying out the clarification plant body that deacidifies and handles to the flue gas that medical waste incineration produced, its characterized in that: the purification equipment body comprises a pre-cooling tower, a wet washing tower, a circulating alkali liquor storage tank and a wastewater tank which are matched, wherein the pre-cooling tower is used for pre-cooling and cooling introduced flue gas, a flue gas inlet is formed in the top of the pre-cooling tower, and a flue gas outlet is formed in the bottom of the pre-cooling tower and is communicated with the flue gas inlet of the wet washing tower through a flue gas pipeline; the wet scrubbing tower is used for removing acidic pollutants in the flue gas, and the top of the wet scrubbing tower is connected with the wet electric dust remover through a smoke exhaust pipeline; the circulating alkali liquor storage tank is connected with the wet washing tower through an alkali liquor conveying pipeline and is used for conveying alkali liquor into the wet washing tower; and the wastewater tank is communicated with a drainage main pipe connected to the side wall of the lower part of the wet scrubbing tower through a drainage pipeline so as to intensively store the wastewater after the alkali scrubbing and then convey the wastewater to wastewater treatment equipment for wastewater treatment.

2. The wet deacidification purification equipment for medical waste incineration flue gas according to claim 1, characterized in that: the wet washing tower comprises a first-stage alkaline washing tower and a second-stage alkaline washing tower which are arranged from bottom to top, at least three groups of spray guns are arranged in the first-stage alkaline washing tower, the liquid inlet end of the liquid drainage main pipe is connected with a liquid drainage port formed in the side wall of the lower part of the first-stage alkaline washing tower, and the liquid inlet end of the spray guns arranged in the first-stage alkaline washing tower is communicated with the liquid drainage main pipe through a waste liquid circulating pipeline so as to recycle the waste water after alkaline washing; the secondary alkaline tower is internally provided with a packing layer and at least three groups of spray guns, the bottom of the secondary alkaline tower is provided with a circulating water pipeline communicated with a circulating alkali liquor storage tank, and one side of the secondary alkaline tower, which is close to the smoke exhaust pipeline, is provided with a demister with a flushing nozzle.

3. The wet deacidification purification equipment for medical waste incineration flue gas according to claim 1 or 2, which is characterized in that: an alkali liquor spray gun and an emergency water spray gun are arranged in the precooling tower, and the liquid inlet end of the alkali liquor spray gun is communicated with the liquid discharge main pipe through a pipeline so as to carry out secondary utilization on the waste water after alkaline washing in the wet washing tower.

4. The medical waste incineration flue gas wet deacidification purification equipment according to claim 3, characterized in that: the pre-cooling tower is provided with a cooling jacket layer, the liquid inlet end of the cooling jacket layer is communicated with an alkali liquor conveying pipeline of a circulating alkali liquor storage tank through a jacket water pipeline, and the liquid outlet end of the cooling jacket layer is communicated with the lower part of the wet washing tower through a pipeline.

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