CN-121668943-B - Multistage circulating type waste gas carbon reduction treatment system

Abstract

The invention discloses a multistage circulation type waste gas carbon reduction treatment system, which relates to the field of waste gas carbon reduction and comprises a first-stage dust reduction circulation unit, a second-stage dehydration circulation unit and a third-stage carbon reduction circulation unit, wherein the first-stage dust reduction circulation unit comprises a physical dust reduction tower, a physical filtration tower and a spray tower which are sequentially connected along a flow path of flue gas, the second-stage dehydration circulation unit comprises a desulfurization tower and a dehumidifier which are sequentially connected along the flow path of flue gas, the spray tower is connected with the desulfurization tower through a first pipeline, the first pipeline is connected with the physical dust reduction tower through a first-stage circulation pipe, the third-stage carbon reduction circulation unit comprises an active carbon adsorption tower, a catalytic conversion carbon reduction tower and a discharge chimney which are sequentially connected along the flow path of flue gas, the dehumidifier is connected with the active carbon adsorption tower through a second-stage circulation pipe, and the discharge chimney is connected with the active carbon adsorption tower through a third-stage circulation pipe.

Inventors

• LIU SHENGHUA

Assignees

• 成都泓润科技有限公司

Dates

Publication Date

20260512

Application Date

20260206

Claims (6)

1. 1. The multistage circulation type waste gas carbon reduction treatment system is characterized by comprising a first-stage dust reduction circulation unit, a second-stage dehydration circulation unit and a third-stage carbon reduction circulation unit, wherein the first-stage dust reduction circulation unit comprises a physical dust reduction tower, a physical filtration tower and a spray tower which are sequentially connected along a flow path of flue gas, the second-stage dehydration circulation unit comprises a desulfurization tower and a dehumidifier which are sequentially connected along the flow path of flue gas, an air outlet of the spray tower is connected with an air inlet of the desulfurization tower through a first pipeline, a dust detector is arranged on the first pipeline, the first pipeline is connected with an air inlet pipe of the physical dust reduction tower through a first-stage circulation pipe, the dust detector is arranged between the spray tower and the first-stage circulation pipe, the third-stage carbon reduction circulation unit comprises an active carbon adsorption tower, a catalytic conversion carbon reduction tower and an exhaust chimney which are sequentially connected along the flow path of flue gas, an air outlet of the dehumidifier is connected with an air inlet of the active carbon adsorption tower through a second pipeline, the second pipeline is connected with an air inlet of the dehumidifier through a second pipeline, a humidity detector is arranged on the second pipeline, the humidity detector is arranged between the second pipeline and the dehumidifier, the dust detector is arranged between the catalytic conversion tower and the flue gas analyzer through the catalytic conversion circulation pipe and the air inlet of the third-stage carbon circulation pipe, and the three-stage carbon circulation pipe are arranged between the active carbon absorption tower and the flue gas analyzer; The device is characterized in that an inclined plate dust settling component is arranged in the physical dust settling tower, an air inlet pipe of the physical dust settling tower is positioned below the inclined plate dust settling component, the inclined plate dust settling component comprises a plurality of inclined dust settling inclined plates, the plurality of dust settling inclined plates are sequentially arranged along the length direction of the physical dust settling tower, a plurality of wavy dust blocking plates are fixed on the left end face and the right end face of each dust settling inclined plate, the plurality of wavy dust blocking plates are arranged at intervals along the width direction of the physical dust settling tower, the wavy dust blocking plates are continuously bent into waves along the height direction of the physical dust settling tower, and the wavy dust blocking plates of two adjacent dust settling inclined plates are contacted to form a wavy dust blocking pipeline; A dust discharging cavity is arranged in the dust settling inclined plate, a wave-shaped path is formed between two adjacent wave-shaped dust blocking plates on the dust settling inclined plate, dust discharging holes are formed in the wave-shaped path at the bending and turning positions, the dust discharging holes are communicated with the dust discharging cavity, the side wall of the physical dust settling tower is connected with a dust discharging main pipe, the bottom of the dust settling inclined plate is connected with a dust discharging hose, the dust discharging hose is connected with the dust discharging main pipe, and the dust discharging main pipe is connected with a circulating tower; The device is characterized in that sliding columns are fixed on two sides of the dust falling inclined plate, a rectangular chute is formed in the position where the sliding columns are arranged in the physical dust falling tower, the sliding columns are arranged in the rectangular chute in a sliding mode, sealing sliding plates are fixed on the upper end face and the lower end face of the sliding columns, the side walls of the sealing sliding plates are contacted with the side walls of the rectangular chute, one end, far away from the sliding columns, of the sealing sliding plates is arranged on the physical dust falling tower in a sliding mode, a cleaning assembly is arranged above the inclined plate dust falling assembly, the cleaning assembly comprises two high-pressure air pipes which are horizontally arranged, the dust falling inclined plate is located between the two high-pressure air pipes, and a plurality of high-pressure air injection holes are formed in the side walls, close to the dust falling inclined plate, of the high-pressure air pipes along the axial direction of the side walls of the high-pressure air pipes; The outer wall of physics dust fall tower is provided with dust fall actuating mechanism, dust fall actuating mechanism includes drive swash plate, sliding seat and butt joint awl pole, drive swash plate slidable mounting is on physics dust fall tower, drive swash plate perpendicular to rectangle chute, the travel path of drive swash plate is on a parallel with the rectangle chute, install the sliding seat on the drive swash plate, the travel path perpendicular to rectangle chute of sliding seat, the one end that the sliding seat is close to the sliding column is equipped with the butt joint awl pole, the butt joint hole has been seted up to the one end that the sliding column is close to the sliding seat, through the cooperation of butt joint awl pole and butt joint hole is with the sliding seat connection sliding column.
2. 2. The multi-stage circulating type waste gas carbon reduction treatment system according to claim 1, wherein a gas chamber and a dust storage chamber are sequentially arranged in the circulating tower from top to bottom, the gas chamber is communicated with the dust storage chamber through a dust exhaust pipe, an electromagnetic valve is arranged on the dust exhaust pipe, a main dust exhaust pipe is communicated with the gas chamber, an air pump is arranged on the main dust exhaust pipe, and the gas chamber is connected with an air inlet pipe of the physical dust reduction tower through a circulating pipe.
3. 3. The multistage circulating type waste gas carbon reduction treatment system according to claim 1, wherein an upper chamber and a lower chamber are arranged in the physical filter tower in a centering manner, the diameter of the lower chamber is larger than that of the upper chamber, a combined fine screen mechanism is arranged in the upper chamber, the combined fine screen mechanism has a degree of freedom of moving along the height direction of the physical filter tower, the combined fine screen mechanism comprises an upper annular screen disc and a lower annular screen disc, a plurality of transverse screen wires are fixed at equal intervals at the bottom of the upper annular screen disc, a plurality of longitudinal screen wires are fixed at equal intervals at the top of the lower annular screen disc, and the longitudinal screen wires are contacted with the transverse screen wires to form a grid type fine screen.
4. 4. The multi-stage circulating type waste gas carbon reduction treatment system according to claim 3, wherein an air pressure cleaning mechanism is arranged in the lower chamber and comprises a movable cleaning pipe and a cleaning driving rod, the length of the movable cleaning pipe is larger than the inner diameter of the upper annular screen disc, an air cylinder is horizontally arranged on the side wall of the physical filtering tower, a telescopic shaft of the air cylinder is connected with one end of the cleaning driving rod through a connecting rod, the other end of the cleaning driving rod penetrates into the lower chamber to be connected with the movable cleaning pipe, a plurality of lower air pressure holes and a plurality of upper air pressure holes are axially formed in the side wall of the movable cleaning pipe, the upper air pressure holes are obliquely arranged upwards, and the lower air pressure holes are obliquely arranged downwards.
5. 5. The multistage circulating type waste gas carbon reduction treatment system according to claim 4, wherein the top surface of the upper annular screen plate is connected with two hollow pipes, the two hollow pipes are symmetrically arranged around the center of the upper annular screen plate, the lower annular screen plate is connected with two driving vertical rods, the two hollow pipes penetrate out of the top of the physical filter tower and are connected together through a lower driving plate, the two driving vertical rods penetrate out of the top of the two hollow pipes respectively and are connected together through an upper driving plate, a first driving cylinder and a second driving cylinder are vertically installed on the physical filter tower, a telescopic shaft of the first driving cylinder is connected with a lower driving plate, and a telescopic shaft of the second driving cylinder movably penetrates through the lower driving plate and is connected with the upper driving plate.
6. 6. The multi-stage circulating type waste gas carbon reduction treatment system according to claim 1, wherein the primary dust fall circulating unit further comprises an indirect cooling tank, a U-shaped surrounding cooling pipe is arranged in the indirect cooling tank and is immersed in cold water of the indirect cooling tank, one end of the U-shaped surrounding cooling pipe is connected with a flue gas discharge pipe, the other end of the U-shaped surrounding cooling pipe is connected with an air inlet pipe of the physical dust fall tower, and the side wall of the indirect cooling tank is connected with a water inlet pipe and a water outlet pipe.

Description

Multistage circulating type waste gas carbon reduction treatment system Technical Field The invention relates to the technical field of waste gas carbon reduction treatment, in particular to a multistage circulating waste gas carbon reduction treatment system. Background Industrial waste gas generally contains high-concentration dust, sulfides and carbon components (such as CO 2, hydrocarbon and the like), and the emission of the industrial waste gas not only exacerbates the environmental problems of haze, acid rain and the like, but also is an important object of carbon emission control. At present, the waste gas treatment mostly adopts a series process of dust removal, desulfurization, dehydration and carbon reduction, but the prior art has obvious defects in the aspects of multistage cooperative treatment, circulation regulation and control and treatment efficiency, and is difficult to meet the severe environmental protection standard and carbon reduction requirement, and the method is characterized in that the multistage treatment is poor in cooperativity and lacks a targeted circulation mechanism. In the existing system, most of dust-settling, dehydration and carbon-settling units independently operate, and no accurate linkage circulation regulation and control exists among links. For example, if the dust concentration is still out of standard after dust fall, the whole machine is stopped for reworking or the next link is directly entered, so that the efficiency of the subsequent desulfurizing tower and the adsorption tower is suddenly reduced due to dust adhesion, and if the humidity control is not up to standard in the dehydration link, the high-humidity flue gas enters the carbon reduction unit, so that the catalyst is deactivated, but the prior art cannot directionally reflux the gas which is not up to standard to the dehydration unit for reprocessing, and the operation can only be maintained by sacrificing the treatment efficiency. Secondly, the traditional dust removal process is to spray firstly to remove large-diameter dust in the waste gas, then filter out small-diameter dust in the waste gas by the filter tower, however, the mode of spraying firstly and then filtering leads to the increase of the humidity of the waste gas, so that dust in the waste gas is easier to adhere together, and the dust is easier to adhere to the filter screen, thereby increasing the burden of the filter screen, leading the filter screen to be easier to be blocked, requiring frequent dredging operation and affecting the treatment efficiency of the waste gas. Thirdly, the manual disassembly and cleaning are needed after the current screen mesh is blocked, mainly in that the existing screening net is of an integral structure, dust is wound and attached to the transverse screen wires and the longitudinal screen wires at the same time, air pressure or spraying cleaning of the filter tower configuration is difficult to achieve a good dredging effect, regular manual disassembly and maintenance are needed, the manual labor intensity is high, and the treatment efficiency of waste gas is affected. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides a multistage circulating type waste gas carbon reduction treatment system which is used for solving the defects of the prior art. The multi-stage circulating type waste gas carbon reduction treatment system comprises a first-stage dust reduction circulating unit, a second-stage dehydration circulating unit and a third-stage carbon reduction circulating unit, wherein the first-stage dust reduction circulating unit comprises a physical dust reduction tower, a physical filtering tower and a spray tower which are sequentially connected along a flow path of flue gas, the second-stage dehydration circulating unit comprises a desulfurizing tower and a dehumidifier which are sequentially connected along the flow path of flue gas, an air outlet of the spray tower is connected with an air inlet of the desulfurizing tower through a first pipeline, a dust detector is arranged on the first pipeline, the first pipeline is connected with an air inlet pipe of the physical dust reduction tower through a first-stage circulating pipe, the dust detector is arranged between the spray tower and the first-stage circulating pipe, the third-stage carbon reduction circulating unit comprises an active carbon adsorption tower, a catalytic conversion carbon reduction tower and an emission chimney which are sequentially connected along the flow path of the flue gas, an air outlet of the dehumidifier is connected with an air inlet of the active carbon adsorption tower through a second pipeline, a humidity detector is arranged on the second pipeline, the humidity detector is connected with an air inlet of the dehumidifier through a second pipeline, the humidity detector is arranged between the second pipeline and the catalytic conversion carbon reduction tower and the