CN211936318U

CN211936318U - Hot-blast furnace desulfurization dusting tower export prevents stifled device

Info

Publication number: CN211936318U
Application number: CN202020284178.4U
Authority: CN
Inventors: 曾志恩; 黄永生; 李陈楚; 温秋镇; 赵振祥
Original assignee: FUJIAN ZHENGSHENG INORGANIC MATERIAL CO LTD
Current assignee: FUJIAN ZHENGSHENG INORGANIC MATERIAL CO LTD
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-11-17
Anticipated expiration: 2030-03-10

Abstract

The utility model discloses an outlet anti-blocking device of a hot blast stove desulfurization and dust removal tower, which comprises a liquid outlet pipe, a desulfurization tower, a gas return pipe, a quick opening device, an anti-escape cover, an overflow pipe and a sedimentation tank; the sedimentation tank is arranged beside the desulfurizing tower and is built by brick-concrete; the liquid outlet pipe is a bent pipe, one end of the liquid outlet pipe is connected with the side surface of the bottom of the desulfurization tower, and the other end of the liquid outlet pipe extends into the bottom of the sedimentation tank to play a liquid sealing role and enable sludge to be positioned at the bottom of the tank; an overflow pipe is arranged near the upper edge of the sedimentation tank and is connected to the neutralization tank; the anti-escape cover is a square box-shaped cover with an opening at the bottom surface, and is buckled on the sedimentation tank, and the upper part of the cover is provided with a quick-opening device; the air return pipe is a bent pipe, one end of the air return pipe is connected with the side surface of the middle lower part of the desulfurizing tower, and the other end of the air return pipe is connected with the anti-escape cover; the liquid outlet pipe, the overflow pipe, the air return pipe and the anti-escape cover are all made of corrosion-resistant stainless steel. The utility model discloses simple structure, preparation and maintenance cost are low, and it is high-efficient to use safety, have solved prior art hot blast stove desulfurization dusting tower outlet blockage and have needed the artifical clear stifled problem of unpicking and washing.

Description

Hot-blast furnace desulfurization dusting tower export prevents stifled device

Technical Field

The utility model relates to an equipment of spray drying process in the production process of inorganic chemical product white carbon black, concretely relates to hot-blast furnace desulfurization dusting tower export prevents stifled device.

Background

The precipitated white carbon black is a fine new material with wide application, and is mainly used in the fields of rubber, silicon rubber, plastics, coating, printing ink, pesticides, papermaking, food, medicine, feed and the like. The production flow of the white carbon black by the precipitation method comprises the following steps: precipitation reaction of water glass and concentrated sulfuric acid, aging, filter pressing, washing, pulping and spray drying, wherein a heat source adopted by drying is clean air after heat exchange with a hot blast stove. The hot blast stove in the prior art generally adopts coal as fuel, and the tail gas that produces during the burning contains sulfur dioxide, nitrogen oxide and particulate matter etc. adopts to spout ammonia water desorption nitrogen oxide, electric precipitation dust removal and desulfurizing tower wet flue gas usually to carry out effective processing to kiln tail gas, thereby ensure that the tail gas emission index is up to standard. The wet desulfurization adopts a pump to spray alkali liquor into the tower, and the dust and a small part of gas which are desorbed are carried and flow back to the neutralization tank through the liquid outlet pipe. The method has the problems that the content of dust and solid waste in the desulfurization solution is gradually increased along with the long-term operation of production, the desulfurization solution can still cause blockage at the outlet of a pipeline, particularly a tower, although the desulfurization solution is precipitated and recycled in a neutralization tank, the blockage is manually removed and cleaned, and the normal operation of the production is seriously influenced.

Disclosure of Invention

The utility model aims at providing a simple structure, preparation and maintenance cost are low, use safe efficient hot-blast furnace desulfurization dusting tower export and prevent stifled device, thereby solve the hot-blast furnace desulfurization dusting tower export jam among the prior art and need artifical the problem of unpicking and washing clear stifled reduction in production efficiency, increase intensity of labour.

In order to realize the purpose, the utility model discloses an outlet anti-blocking device of a hot blast stove desulfurization and dust removal tower comprises a liquid outlet pipe, a desulfurization tower, a gas return pipe, a quick opening device, an anti-escape cover, an overflow pipe and a sedimentation tank; the sedimentation tank is arranged beside the desulfurizing tower and is a sewage tank built by brick-concrete; the liquid outlet pipe is a bent pipe, one end of the bent pipe is connected with the side surface of the bottom of the desulfurizing tower, and the other end of the bent pipe extends into the bottom area of the sedimentation tank to play a role of liquid seal and enable sludge to be positioned at the bottom of the tank; the overflow pipe is arranged close to the upper edge of the sedimentation tank and is connected to the neutralization tank; the anti-escape cover is a square box-shaped cover with an opening on the bottom surface, the cover is buckled on the sedimentation tank, the caliber of the bottom surface of the cover is larger than the size of the opening of the sedimentation tank, and the quick opening device is arranged on the upper part of the cover; the air return pipe is a bent pipe, one end of the air return pipe is connected with the side surface of the middle lower part of the desulfurizing tower, and the other end of the air return pipe is connected with the anti-escape cover; the liquid outlet pipe, the overflow pipe, the air return pipe and the anti-escape cover are all made of corrosion-resistant stainless steel.

The size of the sedimentation tank is 80 multiplied by 80cm, and the size of the anti-escape cover is 85 multiplied by 30 cm.

The anti-blocking device for the outlet of the hot blast stove desulfurization and dust removal tower with the structure has the advantages that the sedimentation tank with the cover plate is additionally provided with the liquid sealing liquid outlet, so that desulfurization liquid firstly enters the sedimentation tank for sedimentation and then overflows, only the sludge needs to be regularly cleaned, the valve is not required to be disassembled and assembled, the blocking cleaning operation is convenient and efficient, meanwhile, the air tightness is ensured so as to avoid the escape of waste gas, and the production efficiency is greatly improved. In addition, the device also has the characteristics of simple structure, low manufacturing and maintenance cost and reliable and safe use.

Drawings

Fig. 1 is the utility model discloses hot-blast furnace desulfurization dusting tower export prevents stifled device schematic structure.

Reference numerals: the device comprises a liquid outlet pipe 1, a desulfurizing tower 2, a gas return pipe 3, a quick opening device 4, an anti-escape cover 5, an overflow pipe 6 and a sedimentation tank 7.

Detailed Description

The utility model discloses hot-blast furnace desulfurization dusting tower export prevents stifled device and does further detailed description below with specific embodiment.

As shown in fig. 1, the anti-blocking device at the outlet of the hot blast stove desulfurization and dust removal tower of the utility model comprises a liquid outlet pipe 1, a desulfurization tower 2, a gas return pipe 3, a quick opening device 4, an anti-escape cover 5, an overflow pipe 6 and a sedimentation tank 7; the sedimentation tank 7 is arranged beside the desulfurizing tower, is a sewage tank built by brick-concrete and has the size of 80 multiplied by 80 cm; the liquid outlet pipe 1 is a bent pipe, one end of the bent pipe is connected with the bottom side surface of the desulfurizing tower 2, and the other end of the bent pipe extends into the bottom area of the sedimentation tank 7 to play a role of liquid seal and enable sludge to be positioned at the bottom of the tank; the overflow pipe 6 is arranged close to the upper edge of the sedimentation tank, and the overflow pipe 6 is connected to the neutralization tank; the anti-escape cover 5 is a square box-shaped cover with an opening on the bottom surface, the cover is buckled on the sedimentation tank 7, the caliber of the bottom surface is larger than the size of the opening of the sedimentation tank 7, the quick-opening device 4 is arranged on the upper part of the cover, and the size of the anti-escape cover 5 is 85 multiplied by 30 cm; the air return pipe 3 is a bent pipe, one end of the bent pipe is connected with the side surface of the middle lower part of the desulfurizing tower 2, and the other end of the bent pipe is connected with an anti-escape cover 5; the liquid outlet pipe 1, the overflow pipe 6, the gas return pipe 3 and the anti-escape cover 5 are all made of corrosion-resistant stainless steel materials.

During the during operation, from drain pipe 1 inflow sedimentation tank 7 of sewage that desulfurizing tower 2 got off, drain pipe 1 adopts heavy-calibre tubular product, is difficult for blockking up, and deepening sedimentation tank bottom region, plays the liquid seal effect and makes mud be in the bottom of the pool, ensures that the desulfurizing tower does not have the air and gets into. The coarse particle sediment is primarily precipitated in the sedimentation tank 7, clear liquid and part of fine sludge flow out of the overflow pipe 6 and return to the neutralization tank, and the overflow pipe 6 is not easy to block due to the fact that sewage is precipitated and has good fluidity. The waste gas from the desulfurization tower 2 is collected by the anti-escape cover 5 and flows back to the tower again through the gas return pipe 3 due to the negative pressure in the tower, so as to avoid the influence of the escape of the tail gas on the environment. During routine inspection, the situation can be observed in real time only by opening the quick-opening device 4, so that normal production is ensured. When the mud needs to be cleaned or repaired for a certain period, the anti-escaping cover 5 is removed.

The anti-blocking device for the outlet of the hot blast stove desulfurization and dust removal tower with the structure has the advantages of easily obtained materials, very safe operation and use and very convenient maintenance.

Claims

1. An outlet anti-blocking device of a hot blast stove desulfurization and dust removal tower comprises a liquid outlet pipe and a desulfurization tower; the method is characterized in that: the device also comprises an air return pipe, a quick opening device, an anti-escape cover, an overflow pipe and a sedimentation tank; the sedimentation tank is arranged beside the desulfurizing tower and is a sewage tank built by brick-concrete; the liquid outlet pipe is a bent pipe, one end of the bent pipe is connected with the side surface of the bottom of the desulfurizing tower, and the other end of the bent pipe extends into the bottom area of the sedimentation tank to play a role of liquid seal and enable sludge to be positioned at the bottom of the tank; the overflow pipe is arranged close to the upper edge of the sedimentation tank and is connected to the neutralization tank; the anti-escape cover is a square box-shaped cover with an opening on the bottom surface, the cover is buckled on the sedimentation tank, the caliber of the bottom surface of the cover is larger than the size of the opening of the sedimentation tank, and the quick opening device is arranged on the upper part of the cover; the air return pipe is a bent pipe, one end of the air return pipe is connected with the side surface of the middle lower part of the desulfurizing tower, and the other end of the air return pipe is connected with the anti-escape cover; the liquid outlet pipe, the overflow pipe, the air return pipe and the anti-escape cover are all made of corrosion-resistant stainless steel.

2. The anti-blocking device for the outlet of the hot blast stove desulfurization and dust removal tower of claim 1 is characterized in that: the size of the sedimentation tank is 80 multiplied by 80cm, and the size of the anti-escape cover is 85 multiplied by 30 cm.