CN211659661U

CN211659661U - High-efficient desulfurization purifier of coke oven flue gas

Info

Publication number: CN211659661U
Application number: CN202020038361.6U
Authority: CN
Inventors: 程常华; 蔡志锋
Original assignee: Qujing Shengkai Coking Co ltd
Current assignee: Qujing Shengkai Coking Co ltd
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-10-13
Anticipated expiration: 2030-01-09

Abstract

The utility model discloses a high-efficient desulfurization purifier of coke oven flue gas, including the desulfurizing tower and arrange the liquid storage tank of desulfurizing tower one side in, the clean room of intercommunication, the air equalizing chamber, emulsification desulfurization chamber and the gas-liquid separation room have set gradually in the desulfurizing tower from the bottom up, the emulsification desulfurization chamber includes the emulsion pipe that many intervals set up, the equal interval in inside of every emulsion pipe is provided with up cyclone and lower cyclone, the emulsion outside of tubes side of going up the cyclone top is provided with the ring canal, the ring canal passes through branch pipe and every emulsion pipe intercommunication. The utility model discloses compact structure, desulfurization efficiency is high, and dust removal effect is good, has apparent economic value and social value.

Description

High-efficient desulfurization purifier of coke oven flue gas

Technical Field

The utility model relates to the technical field of environmental protection equipment, concretely relates to high-efficient desulfurization purifier of coke oven flue gas.

Background

In the coking industry, the pulverized coal in the coke oven can generate a large amount of harmful sulfur-containing gas when being combusted in a hearth, the harmful sulfur-containing gas exhausted into the atmosphere is more and more along with the continuous expansion of the productivity, and after the sulfur-containing flue gas is exhausted into the atmosphere, acid rain can be formed, the ecological environment is damaged, and the health of people is influenced. In addition, the pulverized coal can generate part of incombustibles during combustion, the main component of the incombustibles is ash, the ash can be mixed in high-temperature flue gas, part of the ash is melted under the high-temperature condition to form a large number of fine particles, but the particles can gradually precipitate to form fly ash along with the reduction of the temperature of the flue gas, if the fly ash is not treated, on one hand, dust can be generated to influence the normal work and life of people, on the other hand, the environment can be polluted, therefore, before the coke oven flue gas is discharged, the purification treatment such as dust removal and desulfurization and the like are needed, in the prior art, the desulfurization and dust removal equipment has the problems of complicated structure, high treatment cost, low desulfurization efficiency and the like, and the development of the coking industry is restricted to a certain. Therefore, it is an objective need to develop a high-efficiency desulfurization purification device for coke oven flue gas, which has compact structure, high desulfurization efficiency and good dust removal effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high-efficient desulfurization purifier of coke oven flue gas compact structure, desulfurization efficiency is high, and dust removal effect is good.

The utility model aims at realizing the purposes, the utility model comprises a desulfurizing tower and a liquid storage tank arranged at one side of the desulfurizing tower, a dust-removing chamber, an air equalizing chamber, an emulsification desulfurizing chamber and a gas-liquid separation chamber which are communicated are sequentially arranged in the desulfurizing tower from bottom to top, a guide cylinder is arranged in the dust-removing chamber, the upper end of the guide cylinder is fixed on the inner wall of the dust-removing chamber through a sealing ring plate, a flue gas inlet pipe is arranged on the side wall of the dust-removing chamber close to the sealing ring plate in an oriented manner, a liquid discharge pipe is arranged on the side wall at the bottom of the air equalizing chamber, the liquid outlet end of the liquid discharge pipe is communicated with the liquid storage tank, a plurality of emulsification pipes which are arranged at intervals are vertically arranged in the emulsification desulfurizing chamber, the upper end of each emulsification pipe is communicated with the gas-liquid separation chamber, the lower end of each emulsification pipe is communicated with the air equalizing chamber, an, be connected with the drinking-water pipe on the ring canal, be provided with the suction pump on the drinking-water pipe, the end and the liquid storage pool intercommunication of intaking of drinking-water pipe have set gradually one-level defroster and second grade defroster from the bottom up in the gas-liquid separation room, are provided with the drain pipe on the lateral wall of gas-liquid separation room bottom, and the delivery end and the liquid storage pool intercommunication of drain pipe, and the top of gas-liquid separation room is provided with flue gas outlet duct.

The upper surface of the sealing ring plate is provided with a liquid blocking cylinder which is concentrically arranged with the guide cylinder, and a liquid blocking cover is connected above the liquid blocking cylinder through a fixing strip.

Furthermore, a dust filter screen is arranged at the bottom in the guide cylinder.

Further, a gas homogenizing device is arranged in the gas homogenizing chamber.

Furthermore, the bottom of the gas-liquid separation chamber is provided with a water blocking cylinder concentric with the emulsifying pipe, a water blocking cover is connected above the water blocking cylinder through a fixing strip, and the diameter of the water blocking cover is larger than that of the water blocking cylinder.

The utility model has compact structure, the dust removal and the desulfurization treatment of the flue gas are integrated, the dust in the flue gas is removed firstly during the treatment, the desulfurization treatment is carried out on the flue gas, the principle of cyclone dust removal is utilized during the dust removal, most dust particles in the flue gas are removed, then the flue gas uniformly enters each emulsion tube after passing through the gas homogenizing chamber, the flue gas treated by the cyclone rises spirally in the emulsion tube, the absorption liquid is introduced into the emulsion tube from the ring tube and flows down from the upper part of the emulsion tube, in the process, the spirally-rising flue gas has the rotary cutting function on the absorption liquid, the absorption liquid can be cut and crushed, the flue gas and the absorption liquid are fully mixed to form a relatively stable emulsion layer, the desulfurization of the flue gas can be completed in the process, the purified flue gas after the desulfurization continuously rises and is discharged after the demisting dehydration, and impurities such as sulfur-containing substances in the flue gas can flow downwards, and finally discharged from the drain pipe. The utility model discloses compact structure, desulfurization efficiency is high, and dust removal effect is good, has apparent economic value and social value.

Drawings

Figure 1 is a schematic structural diagram of the present invention,

fig. 2 is a schematic structural diagram of the emulsification tube 8 and the loop tube 11 of the present invention.

In the figure: 1-a liquid storage pool, 2-a dust removal chamber, 3-a gas homogenizing chamber, 4-an emulsion desulfurization chamber, 5-a gas-liquid separation chamber, 6-a flue gas inlet pipe, 7-a liquid discharge pipe, 8-an emulsion pipe, 9-an upper cyclone, 10-a lower cyclone, 11-a ring pipe, 12-a branch pipe, 13-a water suction pipe, 14-a water suction pump, 15-a first-stage demister, 16-a second-stage demister, 17-a water discharge pipe, 18-a guide cylinder, 19-a sealing ring plate, 20-a liquid blocking cylinder, 21-a liquid blocking cover, 22-a dust filtering net, 23-a gas homogenizing device, 24-a water blocking cylinder, 25-an inverted cone-shaped water blocking cover and 26-a flue gas outlet pipe.

Detailed Description

The following further describes the present invention with reference to the attached drawings, but the present invention is not limited in any way, and any changes or improvements based on the teaching of the present invention all belong to the protection scope of the present invention.

As shown in figures 1-2, the utility model comprises a desulfurizing tower and a liquid storage tank 1 arranged on one side of the desulfurizing tower, a dust removal chamber 2, a gas equalization chamber 3, an emulsification desulfurizing chamber 4 and a gas-liquid separation chamber 5 which are communicated with each other are sequentially arranged in the desulfurizing tower from bottom to top, the dust removal chamber 2 is used for removing dust in flue gas, the gas equalization chamber 3 is used for enabling the flue gas to uniformly enter each emulsification tube 8, the emulsification desulfurizing chamber 4 is used for removing sulfur-containing components in the flue gas, the gas-liquid separation chamber 5 is used for removing moisture in the flue gas, a guide cylinder 18 is arranged in the dust removal chamber 2, the upper end of the guide cylinder 18 is fixed on the inner wall of the dust removal chamber 2 through a sealing ring plate 19, a flue gas inlet pipe 6 is tangentially arranged on the side wall of the dust removal chamber 2 close to the sealing ring plate 19, the flue gas enters the dust removal chamber 2, and rotates in the space between the guide cylinder 18 and the side wall of the, flue gas enters the gas homogenizing chamber 3 from a lower port of a guide cylinder 18, a liquid discharge pipe 7 is arranged on the side wall of the bottom of the gas homogenizing chamber 3, the liquid outlet end of the liquid discharge pipe 7 is communicated with the liquid storage tank 1, a plurality of emulsification pipes 8 which are arranged at intervals are vertically arranged in the emulsification desulfurization chamber 4, the upper ends of the emulsification pipes 8 are communicated with the gas-liquid separation chamber 5, the lower ends of the emulsification pipes are communicated with the gas homogenizing chamber 3, an upper swirler 9 and a lower swirler 10 are arranged at intervals in each emulsification pipe 8, an annular pipe 11 is arranged on the outer side of the emulsification pipe 8 above the upper swirler 9, the annular pipe 11 is communicated with each emulsification pipe 8 through a branch pipe 12, a water pumping pipe 13 is connected to the annular pipe 11, a water pumping pump 14 is arranged on the water pumping pipe 13, the water inlet end of the water pumping pipe 13 is communicated with the liquid storage tank 1, a first-stage demister 15 and, the water outlet end of the water discharge pipe 17 is communicated with the liquid storage tank 1, and the top of the gas-liquid separation chamber 5 is provided with a flue gas outlet pipe 26.

The upper surface of the sealing ring plate 19 is provided with a liquid blocking cylinder 20, the liquid blocking cylinder 20 and the guide cylinder 19 are concentrically arranged, the liquid blocking cover 21 is connected above the liquid blocking cylinder 20 through a fixing strip, dust-containing sewage can fall on the liquid blocking cover 21 after falling, and is gathered on the upper surface of the sealing ring plate 19 to be discharged from the liquid discharge pipe 7, and the liquid blocking cylinder 20 is used for blocking the sewage from entering the dust removal chamber 2 through the guide cylinder 18 to influence the dust removal effect.

The bottom in draft tube 18 is provided with dust filter 22, and dust filter 22 can further filter the dust in the flue gas.

In order to make the flue gas in the gas homogenizing chamber 3 uniformly enter each emulsifying pipe 8, a gas homogenizing device 23 is arranged in the gas homogenizing chamber 3, the gas homogenizing device 23 is of an existing structure, and the flue gas can be dispersed and made to uniformly enter each emulsifying pipe 8.

Moisture in the flue gas can be detached in the gas-liquid separation room 5, these moisture can be toward the bottom of gas-liquid separation room 5 and collect, can follow the upper end of emulsification pipe 8 and get into in the emulsification pipe 8, probably influence the desulfurization effect of emulsification pipe 8, in order to avoid this condition, the bottom of gas-liquid separation room 5 is provided with a manger plate section of thick bamboo 24 concentric with emulsification pipe 8, the top of manger plate section of thick bamboo 24 is connected with back taper manger plate cover 25 through the fixed strip, and the diameter of bottom surface is greater than the diameter of manger plate section of thick bamboo 24 under the back taper manger plate cover 25, the setting of manger plate section of thick bamboo 24 and manger plate cover 25 can effectively block moisture and enter into emulsification pipe.

The utility model discloses a working process does: flue gas enters a dust removing chamber 2 from a flue gas inlet pipe 6, most of dust is separated and removed in the dust removing chamber 2, the dust is discharged from the lower part of the dust removing chamber 2, the dedusted flue gas enters a guide shell 18 from the lower port of the guide shell 18, then the flue gas enters a gas homogenizing chamber 3, the flue gas is uniformly distributed into each emulsifying pipe 8 through the gas homogenizing chamber 3, the flue gas sequentially passes through a lower cyclone 10 and an upper cyclone 9 and spirally rises in the emulsifying pipes 8, meanwhile, absorption liquid is introduced into the emulsifying pipes 8 from a ring pipe 11 and flows down from the upper parts of the emulsifying pipes 8, in the process, the spirally-rising flue gas has rotary cutting effect on the absorption liquid, the absorption liquid is cut and crushed, so that the flue gas and the absorption liquid are fully mixed to form a relatively stable emulsifying liquid layer, and the desulfurization work is completed in the process, impurities such as sulfur-containing substances in the flue gas flow downwards, the purified flue gas rises and enters a gas-liquid separation chamber 5, the absorption liquid required by desulfurization is stored in the liquid storage tank 1, the absorption liquid is pumped into the circular pipe 11 by the water suction pump 14 and then enters the emulsifying pipe 8 from the branch pipe 12 for desulfurization in the desulfurization process, impurities such as sulfur-containing substances in the flue gas flow downwards into the gas homogenizing pipe 3 from the emulsifying pipe 8 and flow back into the liquid storage tank 1 from the liquid discharge pipe 7 arranged at the bottom of the gas homogenizing pipe 3, meanwhile, moisture separated from the gas-liquid separating chamber 5 flows back into the liquid storage tank 1 from the water discharge pipe 17, and the wastewater flowing back into the liquid storage tank 1 is treated and then participates in the desulfurization work again.

Claims

1. The utility model provides a high-efficient desulfurization purifier of coke oven flue gas which characterized in that: the device comprises a desulfurization tower and a liquid storage tank (1) arranged on one side of the desulfurization tower, wherein a dust removal chamber (2), an air equalizing chamber (3), an emulsification desulfurization chamber (4) and an air-liquid separation chamber (5) which are communicated are sequentially arranged in the desulfurization tower from bottom to top, a guide cylinder (18) is arranged in the dust removal chamber (2), the upper end of the guide cylinder (18) is fixed on the inner wall of the dust removal chamber (2) through a sealing ring plate (19), a flue gas inlet pipe (6) is tangentially arranged on the side wall of the dust removal chamber (2) close to the sealing ring plate (19), a liquid discharge pipe (7) is arranged on the side wall of the bottom of the air equalizing chamber (3), the liquid outlet end of the liquid discharge pipe (7) is communicated with the liquid storage tank (1), a plurality of emulsification pipes (8) which are arranged at intervals are vertically arranged in the emulsification desulfurization chamber (4), the upper end of the emulsification pipe (8) is communicated with the air-, an upper swirler (9) and a lower swirler (10) are arranged inside each emulsifying pipe (8) at intervals;

the device is characterized in that a ring pipe (11) is arranged on the outer side of an emulsification pipe (8) above an upper cyclone (9), the ring pipe (11) is communicated with each emulsification pipe (8) through a branch pipe (12), a water pumping pipe (13) is connected to the ring pipe (11), a water pumping pump (14) is arranged on the water pumping pipe (13), the water inlet end of the water pumping pipe (13) is communicated with a liquid storage pool (1), a first-stage demister (15) and a second-stage demister (16) are sequentially arranged in a gas-liquid separation chamber (5) from bottom to top, a drain pipe (17) is arranged on the side wall of the bottom of the gas-liquid separation chamber (5), the water outlet end of the drain pipe (17) is communicated with the liquid storage pool (1), and a flue gas outlet.

2. The high-efficiency desulfurization and purification device for the coke oven flue gas as claimed in claim 1, characterized in that: the upper surface of the sealing ring plate (19) is provided with a liquid blocking cylinder (20), the liquid blocking cylinder (20) and the guide cylinder are concentrically arranged, and a liquid blocking cover (21) is connected above the liquid blocking cylinder (20) through a fixing strip.

3. The high-efficiency desulfurization and purification device for the coke oven flue gas as claimed in claim 1, characterized in that: and a dust filtering net (22) is arranged at the bottom in the guide shell (18).

4. The high-efficiency desulfurization and purification device for the coke oven flue gas as claimed in claim 1, characterized in that: and a gas homogenizing device (23) is arranged in the gas homogenizing chamber (3).

5. The high-efficiency desulfurization and purification device for the coke oven flue gas as claimed in claim 1, characterized in that: the bottom of the gas-liquid separation chamber (5) is provided with a water retaining cylinder (24) which is concentrically arranged with the emulsification tube (8), the upper part of the water retaining cylinder (24) is connected with an inverted cone water retaining cover (25) through a fixing strip, and the diameter of the lower bottom surface of the inverted cone water retaining cover (25) is larger than that of the water retaining cylinder (24).