CN111450680B

CN111450680B - High-efficient desulfurizing tower

Info

Publication number: CN111450680B
Application number: CN202010269256.8A
Authority: CN
Inventors: 吕宏俊; 张泽玉; 吕宏远; 郭义培
Original assignee: Shenzhen Greenstars Science & Technology Co ltd
Current assignee: Shenzhen Greenstars Science & Technology Co ltd
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2020-12-04
Anticipated expiration: 2040-04-08
Also published as: CN111450680A

Abstract

The invention discloses a high-efficiency desulfurizing tower, which comprises a tower body, wherein the tower body is rectangular, a discharging tower and a transfer tower which are arranged in parallel and in sequence are arranged in the tower body, a sealing plate is arranged between the discharging tower and the transfer tower, two input towers which are arranged in parallel in the vertical direction are arranged on the other side of the transfer tower, the two input towers are separated by a partition plate, a lime slurry pool is arranged at the bottom of each input tower, the top of the lime slurry pool is provided with an opening, an input pipe is arranged on the side surface of the tower body, the input pipe is provided with two branch pipes, the branch pipes are inserted into the input towers in a one-to-one correspondence manner, a plurality of shunt insertion pipes are arranged on the branch pipes, and the bottoms of the; a transfer pipe is arranged in the transfer tower and is butted with the input tower through a connecting inner pipe; this device is when carrying out gaseous desulfurization, through multistage absorption improvement sulphur removal efficiency greatly to through the setting of gas distribution pipe, adopt the mode of air current dispersion to carry out the aeration absorption, guarantee the effect of sulphur removal.

Description

High-efficient desulfurizing tower

Technical Field

The invention relates to an environment-friendly facility, in particular to a high-efficiency desulfurizing tower.

Background

The desulfurizing tower is equipment for desulfurizing industrial waste gas and is important equipment in chemical equipment; china is a large coal using country in China, combustible substances are combusted to generate flue gas, the flue gas usually contains a large amount of sulfide SO2 and dust, on one hand, acid rain with high corrosivity can be caused, on the other hand, the discharged dust can cause air pollution and harm body health, and sulfide gas can be generated not only by combustion of coal, methane, coal gas and the like.

Most of the existing desulfurizing towers adopt a spraying mode to carry out the desulfurization work of combustion waste gas, such as a desulfurizing tower proposed by Chinese patent publication No. CN107739637A, a desulfurizing tower proposed by Chinese patent publication No. CN107261809A and the like, which are all adopted, although the spraying can improve the contact range of neutralizing liquid and waste gas, the efficiency is not high, the full desulfurization effect can be ensured only by multi-stage spraying, and the spraying can also be influenced by air flow, and the condition of incomplete desulfurization occurs.

Disclosure of Invention

The invention aims to provide a high-efficiency desulfurizing tower to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a high-efficiency desulfurizing tower comprises a tower body, wherein the tower body is in a cuboid shape, a discharging tower and a transfer tower which are arranged in parallel and in sequence are arranged in the tower body, a sealing plate is arranged between the discharging tower and the transfer tower, two input towers which are arranged in parallel in the vertical direction are arranged on the other side of the transfer tower, the two input towers are separated through a partition plate, a lime slurry pool is arranged at the bottom of each input tower, the top of each lime slurry pool is provided with an opening, an input pipe is arranged on the side surface of the tower body, the input pipe is provided with two branch pipes, the branch pipes are inserted into the input towers in a one-to-one correspondence mode, a plurality of shunt insertion pipes are arranged on the branch pipes, and the bottoms; be equipped with the transfer pipe in the transfer tower, the transfer pipe docks with the input tower through connecting inner tube, discharge by supreme lye tank, absorption net, shower and the dehumidification net of being equipped with in proper order down in the tower, be equipped with the blast pipe at the top of the tower that discharges, be equipped with the gas distribution pipe with the transfer pipe butt joint in the lye tank, the gas distribution pipe is cylindrical, is equipped with a plurality of protrusion shower nozzles along the circumferencial direction on the gas distribution pipe outer wall, and the interval between the protrusion shower nozzle is the same, is equipped with the elevator pump that is linked together through circulating pipe and lye tank on the tower body outer wall, and the output of elevator pump passes through circulating pipe and shower butt joint.

A first switch valve is arranged at the joint of the input pipe and the tower body, and a second switch valve is arranged at the joint of the transfer pipe and the connecting inner pipe; the tower body is provided with a liquid supplementing port and a liquid discharging port which are communicated with the input tower, the liquid supplementing port is positioned above the corresponding lime slurry pool, and the liquid discharging port is positioned at the bottom of the corresponding lime slurry pool and is communicated with the lime slurry pool; the lower part of the transfer pipe is provided with a booster pump; the upper part of the circulating pipe is provided with a three-way valve, and the three-way valve is also connected with an external pipe; the absorption net is a stainless steel wire net, and the dehumidification net is filled with moisture absorption cotton; the cross section of the spray pipe is arc-shaped, and a plurality of atomizing nozzles are arranged at the bottom of the spray pipe.

As a preferred embodiment of the present invention: the front end of the transfer pipe is in a closed state and extends into the gas distribution pipe, a plurality of inner pressurizing connecting pipes communicated with the transfer pipe are arranged in the gas distribution pipe, and the diameter of each inner pressurizing connecting pipe is smaller than the width of the protruding spray head.

As a still further preferable embodiment of the present invention: and the bottom of the lime slurry pool is provided with a heat exchange pipe.

Compared with the prior art, the invention has the beneficial effects that: this device is when carrying out gaseous desulfurization, gas after carrying out preliminary desulfurization through lime thick liquid goes into in the gas distribution pipe by the transfer pipe is advanced, through the protruding shower nozzle blowout on the gas distribution pipe, because the protruding shower nozzle sets up along the circumferencial direction, consequently, can make gas carry out the multi-angle injection along the circumferencial direction when getting into the lye incasement, make gaseous fully dispersed and fully contact with alkali lye, guarantee the desulfurization effect, gas rises after the lye case desulfurization, take out lye in the lye case and spout by the shower pipe through the elevator pump, there is alkali lye to carry out final desulfurization to gas through adnexed alkali lye on the absorption network and the process of spraying, carry out the moisture absorption back by the blast pipe discharge at the dehumidification net, multistage absorption improves desulfurization efficiency greatly, and through the setting of gas distribution pipe, adopt the mode of air current dispersion to carry out the aeration absorption, guarantee the effect of desulfurization.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a perspective view of the air distribution pipe of the present invention.

Fig. 3 is a sectional view showing an internal structure of the gas distribution pipe according to the present invention.

In the figure, 1-tower body, 2-discharge tower, 3-middle rotating tower, 4-input tower, 5-clapboard, 6-lime slurry pool, 7-fluid infusion port, 8-fluid discharge port, 9-input pipe, 10-first switch valve, 11-shunt insertion pipe, 12-transfer pipe, 13-booster pump, 14-second switch valve, 15-connecting inner pipe, 16-gas distribution pipe, 17-lye tank, 18-absorption net, 19-dehumidification net, 20-gas exhaust pipe, 21-circulating pipe, 22-lift pump, 23-spray pipe, 24-three-way valve, 25-external connecting pipe, 26-projecting nozzle, 27-internal booster connecting pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-2, a high-efficiency desulfurization tower comprises a tower body 1, wherein the tower body 1 is rectangular, a discharge tower 2 and a transfer tower 3 which are arranged in parallel and in sequence are arranged in the tower body 1, a sealing plate is arranged between the discharge tower 2 and the transfer tower 3, two input towers 4 which are arranged in parallel in the vertical direction are arranged on the other side of the transfer tower 3, the two input towers 4 are separated by a partition plate 5, a lime slurry pool 6 is arranged at the bottom of each input tower 4, the top of the lime slurry pool 6 is opened, the lime slurry pool 6 is used for loading lime slurry, gas to be desulfurized is firstly purified, an input pipe 9 is arranged on the side surface of the tower body 1, the input pipe 9 is provided with two branch pipes, the branch pipes are correspondingly inserted into the input towers 4 one by one, a plurality of shunt insertion pipes 11 are arranged on the branch pipes, the bottoms of the shunt insertion pipes 11 are positioned in the lime slurry pool 6, when sulfur is removed, waste gas is firstly input into the lime slurry tanks 6 in the two input towers 4 through the input pipe 9, and the gas is firstly neutralized through lime slurry; a transfer pipe 12 is arranged in the transfer tower 3, the transfer pipe 12 is in butt joint with the input tower 4 through a connecting inner pipe 15, gas neutralized through the lime slurry pool 6 is conveyed into the discharge tower 2 through the connecting inner pipe 15, an alkaline liquid tank 17, an absorption net 18, a spray pipe 23 and a dehumidification net 19 are sequentially arranged in the discharge tower 2 from bottom to top, an exhaust pipe 20 is arranged at the top of the discharge tower 2, a gas distribution pipe 16 in butt joint with the transfer pipe 12 is arranged in the alkaline liquid tank 17, the gas distribution pipe 16 is cylindrical, a plurality of protruding spray heads 26 are arranged on the outer wall of the gas distribution pipe 16 along the circumferential direction, the intervals among the protruding spray heads 26 are the same, a lifting pump 22 communicated with the alkaline liquid tank 17 through a circulating pipe 21 is arranged on the outer wall of the tower body 1, and the output end of the lifting pump 22 is in butt joint with the spray pipe; the gas after the preliminary desulfurization by the lime slurry firstly enters the gas distribution pipe 16 from the transfer pipe 12, is sprayed out through the projecting nozzle 26 on the gas distribution pipe 16, because the projecting nozzle 26 is arranged along the circumferential direction, the gas can be sprayed along the circumferential direction at multiple angles when entering the lye tank 17, so that the gas is fully dispersed and fully contacted with the alkali liquor, the desulphurization effect is ensured, the gas rises after the desulphurization in the alkali liquor tank 17, the alkali liquor in the alkali liquor box 17 is pumped out by the lift pump 22 and is sprayed out by the spray pipe 23, the final sulfur removal is carried out on the gas by the alkali liquor attached on the absorption net 18 and the alkali liquor existing in the air during the spraying process, after moisture is absorbed by the dehumidification net 19, the moisture is discharged by the exhaust pipe 20, the multi-stage absorption greatly improves the desulfurization efficiency, and the gas distribution pipe 16 is arranged, and aeration absorption is carried out in an airflow dispersion mode, so that the sulfur removal effect is ensured.

Specifically, a first switch valve 10 is arranged at the connection position of the input pipe 9 and the tower body 1, a second switch valve 14 is arranged at the connection position of the transfer pipe 12 and the connection inner pipe 15, after long-time desulfurization, lime slurry and sulfur-containing gas are neutralized and lose desulfurization efficacy, at the moment, the corresponding first switch valve 10 and second switch valve 14 can be closed, the lime slurry in the lime slurry pool 6 is replaced, a liquid supplementing port 7 and a liquid discharging port 8 which are communicated with the input tower 4 are arranged on the tower body 1, the liquid supplementing port 7 is positioned above the corresponding lime slurry pool 6, and the liquid discharging port 8 is positioned at the bottom of the corresponding lime slurry pool 6 and is communicated with the lime slurry pool 6; the lower part of the transfer pipe 12 is provided with a booster pump 13, and the booster pump 13 is used for increasing when gas is transferred, so that the gas can be sprayed in all directions when being discharged from the protruding spray head 26 on the gas distribution pipe 16.

Further, a three-way valve 24 is arranged at the upper part of the circulating pipe 21, the three-way valve 24 is also connected with an external connecting pipe 25, and the external connecting pipe 25 is used for replenishing alkali liquor; the absorption net 18 is a stainless steel wire net, and the dehumidification net 19 is filled with moisture absorption cotton.

The cross-section of the spraying pipe 23 is arc-shaped, and a plurality of atomizing nozzles are arranged at the bottom of the spraying pipe 23 and used for atomizing alkali liquor in the spraying process, so that the coverage of the alkali liquor in the spraying process is improved.

Example 2:

referring to fig. 3, on the basis of embodiment 1, the front end of the transfer pipe 12 is in a closed state and extends into the gas distribution pipe 16, a plurality of inner pressurizing connecting pipes 27 communicated with the transfer pipe 12 are arranged in the gas distribution pipe 16, the diameter of each inner pressurizing connecting pipe 27 is smaller than the width of each protruding nozzle 26, and when the gas is sprayed out in all directions through the gas distribution pipe 16, the speed of the gas during spraying can be increased through the inner pressurizing connecting pipes 27, so that the protruding nozzles 26 located at the lower half part of the gas distribution pipe 16 can smoothly spray the gas, the dispersion of the gas is ensured, and the sufficient contact between the gas and the alkali liquor is ensured.

Example 3:

on the basis of embodiment 1, the bottom of the lime slurry pool 6 is provided with the heat exchange pipe, when the lime slurry pool 6 carries out sulfur removal work, heat in waste gas is transferred to lime slurry, and cold water is added into the heat exchange pipe, so that waste heat can be recovered, and slurry splashing caused by overhigh temperature in the lime slurry pool 6 can be avoided.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A high-efficiency desulfurizing tower, which comprises a tower body (1), wherein the tower body (1) is cuboid, a discharge tower (2) and a transfer tower (3) which are arranged in parallel and in sequence are arranged in the tower body (1), a sealing plate is arranged between the discharge tower (2) and the transfer tower (3), it is characterized in that two input towers (4) which are arranged in parallel in the vertical direction are arranged at the other side of the middle rotating tower (3), the two input towers (4) are separated by a clapboard (5), the bottom of each input tower (4) is provided with a lime slurry pool (6), the top of the lime slurry pool (6) is opened, an input pipe (9) is arranged on the side surface of the tower body (1), the input pipe (9) is provided with two branch pipes, the branch pipes are inserted into the input tower (4) in a one-to-one correspondence manner, a plurality of shunt insertion pipes (11) are arranged on the branch pipe, and the bottoms of the shunt insertion pipes (11) are positioned in the lime slurry pool (6); a transfer pipe (12) is arranged in the middle turret (3), the transfer pipe (12) is in butt joint with the input tower (4) through a connecting inner pipe (15), an alkali liquor box (17), an absorption net (18), a spraying pipe (23) and a dehumidification net (19) are sequentially arranged in the discharge tower (2) from bottom to top, an exhaust pipe (20) is arranged at the top of the discharge tower (2), an air distribution pipe (16) in butt joint with the transfer pipe (12) is arranged in the alkali liquor box (17), a booster pump (13) is arranged at the lower part of the transfer pipe (12), the front end of the transfer pipe (12) is in a closed state and extends into the air distribution pipe (16), a plurality of inner pressurization connecting pipes (27) communicated with the transfer pipe (12) are arranged in the air distribution pipe (16), the diameter of each inner pressurization connecting pipe (27) is smaller than the width of a protruding spray nozzle (26), the air distribution pipe (16) is cylindrical, and a plurality of protruding spray nozzles (26) are arranged on the outer wall of the air distribution pipe, the intervals between the protruding spray nozzles (26) are the same, a lifting pump (22) communicated with the alkaline liquid tank (17) through a circulating pipe (21) is arranged on the outer wall of the tower body (1), and the output end of the lifting pump (22) is in butt joint with the spray pipe (23) through the circulating pipe (21).

2. A high efficiency desulphurisation tower according to claim 1 wherein the junction of the inlet pipe (9) and the tower (1) is provided with a first on/off valve (10) and the junction of the transfer pipe (12) and the connecting inner pipe (15) is provided with a second on/off valve (14).

3. The efficient desulfurization tower according to claim 2, wherein the tower body (1) is provided with a liquid supplementing port (7) and a liquid discharging port (8) which are communicated with the input tower (4), the liquid supplementing port (7) is positioned above the corresponding lime slurry pool (6), and the liquid discharging port (8) is positioned at the bottom of the corresponding lime slurry pool (6) and is communicated with the inside of the lime slurry pool (6).

4. A high-efficiency desulfurizing tower according to claim 1 or 2, characterized in that the upper part of the circulating pipe (21) is provided with a three-way valve (24), and the three-way valve (24) is further connected with an external pipe (25).

5. The high-efficiency desulfurizing tower according to claim 1 or 2, characterized in that said absorbing net (18) is a stainless steel wire net, and said dehumidifying net (19) is filled with moisture absorbing cotton.

6. The high-efficiency desulfurizing tower according to claim 1 or 2, characterized in that the cross section of the spray pipe (23) is circular arc, and a plurality of atomizing nozzles are arranged at the bottom of the spray pipe (23).

7. A high efficiency desulfurization tower in accordance with claim 1, wherein the bottom of said lime mud pit (6) is provided with heat exchange tubes.