CN215388671U

CN215388671U - Novel desulfurizing tower

Info

Publication number: CN215388671U
Application number: CN202120991254.XU
Authority: CN
Inventors: 曹进; 吴俊�
Original assignee: Chongqing Jianfeng New Material Co Ltd
Current assignee: Chongqing Jianfeng New Material Co Ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2022-01-04
Anticipated expiration: 2031-05-11

Abstract

The utility model discloses a novel desulfurizing tower which comprises a desulfurizing tower, a circulating pump and a spraying pipeline, wherein a smoke outlet is arranged above the desulfurizing tower, a liquid outlet is arranged below the desulfurizing tower, a smoke partition wall and a supporting pipe are arranged on the inner side of the desulfurizing tower, the circulating pump is arranged between the desulfurizing tower and the spraying pipeline, the spraying pipeline extends to the inner side of the desulfurizing tower, a nozzle is arranged at the extending end of the spraying pipeline, bonding layers are arranged on the inner side wall of the desulfurizing tower, the smoke partition wall and the supporting pipe, and an abrasion-resistant composite ceramic layer is arranged on the bonding layers. The novel desulfurizing tower is simple in structure, the service life of the novel desulfurizing tower is prolonged, and the maintenance cost is reduced.

Description

Novel desulfurizing tower

Technical Field

The utility model relates to the field of desulfurization, in particular to a novel desulfurizing tower.

Background

The desulfurization link is a very important link in the flue gas treatment, and the performance of the desulfurization setting directly determines the quality of the desulfurization link. The existing desulfurizing tower has many faults, mainly including nozzle abrasion, blockage, desulfurizing tower leakage, circulating pump filter screen blockage, spray pipeline leakage, flue leakage and the like, seriously restricts the stable operation of a desulfurizing system, has short operation period, leads to frequent maintenance of the desulfurizing tower, not only increases the maintenance cost, but also leads to low desulfurizing efficiency.

Disclosure of Invention

The utility model aims to provide a novel desulfurizing tower which has long service life and reduces maintenance cost aiming at the defects of the prior art.

The technical scheme of the utility model is as follows:

the utility model provides a novel desulfurizing tower, includes desulfurizing tower, circulating pump and spray line, the top of desulfurizing tower is equipped with exhaust port, below is equipped with the leakage fluid dram, the inboard of desulfurizing tower is equipped with smog partition wall and stay tube, the circulating pump sets up the desulfurizing tower with between the spray line, the spray line extend to the inboard of desulfurizing tower, the extension end of spray line is equipped with the nozzle, inside wall, smog partition wall and the stay tube of desulfurizing tower all are equipped with the adhesive linkage outward, be equipped with the compound ceramic layer of wear-resisting erosion on the adhesive linkage.

Furthermore, the inner side wall of the spraying pipeline is sequentially provided with an adhesive layer and an abrasion-resistant composite ceramic layer.

Furthermore, the abrasion-resistant polymer particles are uniformly distributed in the abrasion-resistant composite ceramic layer.

Further, the nozzle comprises a nozzle body, a thread fastening portion is arranged at the large-diameter end of the nozzle body, a nut is arranged on the thread fastening portion, the nozzle body is of a conical spiral body structure, the number of turns of the nozzle body is 3-5, and the turn pitch of the nozzle body is 12-18 mm.

Furthermore, the spray hole angle of the nozzle body is 65-70 degrees.

Furthermore, the nozzle hole of the nozzle body is provided with an extension section, and the length of the extension section is 25-35 mm.

Further, the import of circulating pump is equipped with external filter, external filter includes the casing, sets up sealed lid in the casing upper end and sets up the cartridge filter in the casing, one side of casing with be equipped with be used for with the desulfurization tower pipeline continuous water inlet, the opposite side is equipped with the delivery port that is used for linking to each other with the circulating pump, the filter area of cartridge filter is at least three of casing water inlet.

Further, the filter screen aperture of cartridge filter is for being greater than 12mm, is less than 15 mm.

Furthermore, a flushing pipeline is arranged on the side wall of the shell, a sewage draining outlet is formed in the bottom of the shell, a sewage draining pipeline extending out of the shell is arranged at the sewage draining outlet, and a wafer type butterfly valve is arranged on the sewage draining pipeline.

Further, the sealing cover is fixed on the shell through bolts, and the bolts are lifting bolts.

Adopt above-mentioned technical scheme to have following beneficial effect:

the inner side wall, the smoke partition wall and the support pipe of the desulfurizing tower are respectively provided with an adhesive layer, and the adhesive layers are provided with an abrasion-resistant composite ceramic layer, so that the adhesive force of the abrasion-resistant composite ceramic layer is strong, and the bonding strength is more than or equal to 25 MPa; the wear resistance is strong, the wear resistance is 3-5 times higher than that of rubber and is several times higher than that of quenched carbon steel; the corrosion resistance is strong. The scouring resistance of the desulfurizing tower, the smoke partition wall and the supporting pipe is improved, the service life is prolonged, and the maintenance cost is reduced.

The spiral nozzle with the turn interval of 12-18 mm is adopted, so that the spiral part of the nozzle is prevented from being blocked, and the slurry sprayed by the nozzle is more uniform. Meanwhile, the nozzle is a solid nozzle, the atomization effect is better, the smoke emission is within 400mg/m, and the desulfurization efficiency can meet the smoke emission standard requirement (the sulfur content of the smoke under the full-load condition of a boiler is 11000 mg/m).

The inlet of the circulating pump is provided with an external filter, the external filter is provided with a built-in filter cartridge, the filtering area of the filter cartridge is at least three times of that of the water inlet of the shell, and the circulating pump can still normally operate after the filtering net part of the filter cartridge is blocked because the filtering area of the filter cartridge is more than three times of that of the inlet of the circulating pump. The filter screen of the external filter is prevented from being damaged, and larger impurities enter the nozzle to cause the nozzle to be blocked, so that the filtering effect is improved.

The following description is further described in conjunction with the accompanying drawings and the detailed description.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the inside of a desulfurization tower according to the present invention;

FIG. 3 is a schematic structural view of a nozzle of the present invention;

FIG. 4 is a schematic structural diagram of an external filter according to the present invention.

In the attached drawing, 1 is a desulfurizing tower, 2 is a spraying pipeline, 3 is a smoke partition wall, 4 is a supporting pipe, 5 is an adhesive layer, 6 is an abrasion-resistant composite ceramic layer, 7 is a nozzle body, 8 is a screw cap, 9 is a circulating pump, 10 is an external filter, 10-1 is a shell, 10-2 is a sealing cover, 10-3 is a filter cylinder, 10-4 is a flushing pipeline, and 11 is a sewage discharge pipeline.

Detailed Description

Specific example 1:

referring to fig. 1 to 4, a novel desulfurization tower comprises a desulfurization tower 1, a circulation pump 9 and a spray pipe 2, wherein the circulation pump 9 is arranged between the desulfurization tower 1 and the spray pipe 2, the spray pipe 2 extends to the inner side of the desulfurization tower 1, and a nozzle is arranged at the extending end of the spray pipe 2. The inboard of desulfurizing tower 1 is square structure, the top of desulfurizing tower 1 is equipped with exhaust port, below is equipped with the leakage fluid dram, the inboard of desulfurizing tower 1 is equipped with smog partition wall 3 and stay tube 4, spray piping 2 extends to the inboard of desulfurizing tower, the extension end of spray piping 2 is equipped with the nozzle, inside wall, smog partition wall 3 and the stay tube 4 of desulfurizing tower 1 all are equipped with adhesive linkage 5 outward, and this adhesive linkage 5 adopts the coating of bonding glue at the surface of the left and right sides face of inside wall, smog partition wall, the stay tube of desulfurizing tower. The bonding layer 5 is provided with an abrasion-resistant composite ceramic layer 6, abrasion-resistant polymer particles are uniformly distributed in the abrasion-resistant composite ceramic layer 6, and the abrasion-resistant composite ceramic layer 6 is made of zirconium oxide, silicon carbide and aluminum oxide. The abrasion-resistant polymer particles are blended in the abrasion-resistant composite ceramic material and then coated outside the bonding layer to form the abrasion-resistant composite ceramic layer. The abrasion-resistant composite ceramic layer has strong adhesive force, and the bonding strength is more than or equal to 25 MPa; the wear resistance is strong, the wear resistance is 3-5 times higher than that of rubber and is several times higher than that of quenched carbon steel; the corrosion-resistant composite ceramic layer is a neutral material, has stable chemical properties, excellent corrosion resistance and acid resistance, and can resist various inorganic acids, organic solvents and the like; high temperature resistance, and the highest temperature resistance can reach 250 ℃. The abrasion-resistant composite ceramic layer is additionally arranged at the positions, which are frequently washed, of the desulfurizing tower, the smoke partition wall and the supporting tube, so that a protective layer for the desulfurizing tower, the smoke partition wall and the supporting tube is formed, and the abrasion-resistant composite ceramic layer is strong in abrasion resistance and corrosion resistance, so that the service lives of the desulfurizing tower, the smoke partition wall and the supporting tube are prolonged.

Possibly, the inner side wall of the spraying pipeline 2 is provided with an adhesive layer 5 and an abrasion-resistant composite ceramic layer 6 in sequence. By additionally arranging the abrasion-resistant composite ceramic layer in the spray pipeline 2, the abrasion resistance, the corrosion resistance and the strength of the spray pipeline are enhanced, and the service life of the spray pipeline is prolonged.

The utility model adopts the abrasion-resistant composite ceramic material to carry out corrosion prevention at the position which is easy to scour and corrode the desulfurizing tower. After one period of operation, the parts which are easy to wash are intact and not damaged through inspection, the corrosion of the tower wall due to abrasion is effectively prevented, the safe and stable operation of a desulfurization system is ensured, and the standard emission of desulfurization is also ensured. After the wear-resistant ceramic is added, the operation period of the desulfurizing tower is increased from about 10 days to more than 120 days, so that the combined transportation of the desulfurizing device and a boiler system is realized, the maintenance cost caused by the shutdown of the desulfurizing tower is reduced every year, and the consumption of furnace ignition and shutdown is reduced.

The nozzle adopts nozzle body 7, solid awl nozzle sprays the atomization effect better, nozzle body 7's big footpath end diameter 45 ~ 50mm, nozzle body 7's big footpath end is equipped with screw fastening portion, screw fastening portion is equipped with nut 8, nozzle body 7 is conical spirochaeta structure, nozzle body 7's number of turns is 3 ~ 5 circles, nozzle body 7's circle width is 18 ~ 22 mm. The turn-to-turn distance d of the nozzle body 7 is 12-18 mm, and the flow of a single nozzle is 25-30 m³The nozzle body 7 is made of silicon carbide, and the silicon carbide has wear resistanceStrong, and prolongs the service life. The spray hole angle of the nozzle body 7 is 65-70 degrees, the spray hole of the nozzle body 7 is provided with an extension section L, the length of the extension section L is 25-30 mm, the spray angle is small, and the tower wall cannot be flushed. In this particular embodiment: the nozzle body 7 adopts a conical spiral body structure which is prepared by calcining silicon carbide for multiple times under no pressure, the number of turns of the nozzle body 7 is 3.5 turns, the turn width is 20mm, the turn pitch d is 15mm, the thickness is 19mm, the spray hole angle of the nozzle body 7 is 80 degrees, the flow of a single nozzle is 25m³The diameter of the large-diameter end of the nozzle body 7 is 46mm, and the length of the jet hole extension section L is 30mm, which is the best embodiment.

The nozzle body 7 of the utility model adopts a conical spiral body structure, and the turn pitch avoids the blockage and crystallization of the spiral part, so that the spraying of the nozzle is more uniform. The high-pressure spray desulfurization form of the nozzle body 7 is adopted, the desulfurization efficiency is more than 95%, most of the desulfurized flue gas sulfur dioxide is removed, and the dust content of the flue gas is greatly reduced. The nozzle body 7 can be adapted to either high-sulfur coal having a sulfur content of more than 3% or low-sulfur coal having a sulfur content of less than 1%.

The inlet of the circulating pump 9 is provided with an external filter 10, the external filter 10 comprises a shell 10-1, a sealing cover 10-2 arranged at the upper end of the shell and a filter cylinder 10-3 arranged in the shell, the shell 10-1 is cylindrical, the wall thickness of the shell 10-1 is 8-10 mm, one side of the shell 10-1 is provided with a water inlet used for being connected with a pipeline of the desulfurizing tower 1, the other side of the shell is provided with a water outlet used for being connected with the circulating pump 9, the water inlet and the water outlet are arranged in opposite directions, the water inlet is provided with a first connecting flange used for being connected with the pipeline of the desulfurizing tower, and the water outlet is provided with a second connecting flange used for being connected with the pipeline of the circulating pump. The inner side of the shell 10-1 is provided with a support frame, the upper end of the filter cylinder 10-3 is provided with a flanging, the filter cylinder 10-3 is matched and fixed in the shell through the flanging and the support frame, so that the filter cylinder 10-3 is suspended in the inner cavity of the shell, the filtering area of the filter cylinder 10-3 is at least three times of the water inlet of the shell, namely the area of the filter screen of the filter cylinder 10-3 is equal to or more than three times of the area of the water inlet of the shell, and when the filter screen of the filter cylinder 10-3 is partially blocked, the circulating pump can still normally operate. The filter screen aperture of cartridge filter 10-3 is for being greater than 12mm, being less than 15mm, can filter the impurity more than 12mm, and the part impurity in the desulfurizing tower will be filtered through built-in filter screen after the agitator stirring (the very big cubic impurity of few part will deposit the bottom of the tower, opens the desulfurizing tower manhole door and clear up when the desulfurization is overhauld) to prevent that the circulating pump from frequently clearing up external filter screen because of impurity is too many. The wall thickness of the filter cylinder 10-3 is 3-5 mm. Further, the upper end of the filter cartridge 10-3 is an inclined opening. The side wall of the shell 10-1 is provided with a flushing pipeline 10-4, the flushing pipeline 10-4 is connected with a water outlet pipe of a circulating water pump, the flushing pipeline 10-4 is located at the middle lower part of the filter cylinder 10-3, the bottom of the shell 10-1 is provided with a sewage discharge outlet, the sewage discharge outlet is provided with a sewage discharge pipeline 11 extending out of the shell 10-1, and the sewage discharge pipeline 11 is provided with a wafer type butterfly valve so that impurities in the sewage discharge pipeline 11 can be discharged. The sealing cover 10-2 is fixed on the shell 10-1 through bolts, and the bolts are lifting bolts, so that when the filter cartridge in the external filter needs to be overhauled, the sealing cover 10-2 can be quickly opened through the lifting bolts.

Claims

1. The utility model provides a novel desulfurizing tower, includes desulfurizing tower, circulating pump and spray piping, the top of desulfurizing tower is equipped with exhaust port, below is equipped with the leakage fluid dram, the inboard of desulfurizing tower is equipped with smog partition wall and stay tube, the circulating pump sets up the desulfurizing tower with between the spray piping, the spray piping extends to the inboard of desulfurizing tower, the extension end of spray piping is equipped with nozzle, its characterized in that: and the inner side wall of the desulfurizing tower, the smoke partition wall and the supporting pipe are all provided with bonding layers, and the bonding layers are provided with abrasion-resistant composite ceramic layers.

2. The new desulfurization tower of claim 1, wherein: and the inner side wall of the spraying pipeline is sequentially provided with an adhesive layer and an abrasion-resistant composite ceramic layer.

3. The new desulfurization tower of claim 1 or 2, wherein: and the abrasion-resistant polymer particles are uniformly distributed in the abrasion-resistant composite ceramic layer.

4. The new desulfurization tower of claim 1, wherein: the nozzle comprises a nozzle body, wherein a thread fastening part is arranged at the large-diameter end of the nozzle body, a nut is arranged on the thread fastening part, the nozzle body is of a conical spiral body structure, the number of turns of the nozzle body is 3-5, and the turn-to-turn distance of the nozzle body is 12-18 mm.

5. The new desulfurization tower of claim 4, wherein: the nozzle body has a nozzle hole angle of 65-70 degrees.

6. The new desulfurization tower of claim 4, wherein: the nozzle body is provided with an extension section in the spray hole, and the length of the extension section is 25-35 mm.

7. The new desulfurization tower of claim 1, 2 or 4, wherein: the inlet of circulating pump is equipped with external filter, external filter includes the casing, sets up sealed lid in the casing upper end and sets up the cartridge filter in the casing, one side of casing with be equipped with be used for with the water inlet that the desulfurizing tower pipeline links to each other, the opposite side is equipped with the delivery port that is used for linking to each other with the circulating pump, the filter area of cartridge filter is at least three of casing water inlet.

8. The new desulfurization tower of claim 7, wherein: the aperture of the filter screen of the filter cartridge is larger than 12mm and smaller than 15 mm.

9. The new desulfurization tower of claim 7, wherein: the side wall of the shell is provided with a flushing pipeline, the bottom of the shell is provided with a sewage draining outlet, the sewage draining outlet is provided with a sewage draining pipeline extending out of the shell, and the sewage draining pipeline is provided with a wafer type butterfly valve.

10. The new desulfurization tower of claim 7, wherein: the sealing cover is fixed on the shell through bolts, and the bolts are lifting bolts.