阅读说明：本技术 一种深度降温耦合预荷电的so3强化团聚装置及其方法 (SO of degree of depth cooling coupling precharge3Enhanced agglomeration device and method thereof ) 是由 舒英钢 刘含笑 陈招妹 崔盈 王淦 刘美玲 郭高飞 李春 蒋杭阳 于 2020-05-19 设计创作，主要内容包括：本发明提出了一种深度降温耦合预荷电的SO<Sub>3</Sub>强化团聚装置及其方法,该装置包括沿烟气处理方向依次设置的进口端、第一预荷电区、第一导流区、深度降温区、第二预荷电区、第二导流区、除雾区和出口端,所述第一预荷电区、第二预荷电区上分别配设有第一供电电源和第二供电电源,所述第一供电电源、第二供电电源分别为第一预荷电区、第二预荷电区提供高压负电,所述第一导流区、第二导流区内分别设有若干个第一导流板、第二导流板,所述深度降温区内布置有用以使烟气降温的循环冷却水管,所述除雾区内设有除雾器。该装置适用于燃煤电厂、化工、冶金、水泥等多种行业的废气治理,能够显著减少蓝色烟羽排放。(The invention provides a deep cooling coupling pre-charging SO 3 The device comprises an inlet end, a first pre-charging area, a first flow guide area, a deep cooling area, a second pre-charging area, a second flow guide area, a demisting area and an outlet end which are sequentially arranged along the flue gas treatment direction, wherein a first power supply and a second power supply are respectively arranged on the first pre-charging area and the second pre-charging area in a matched mode, the first power supply and the second power supply respectively provide high-voltage negative electricity for the first pre-charging area and the second pre-charging area, and the first flow guide area is used for guiding the flue gas to flow towards the first pre-charging area and the second pre-charging areaA plurality of first guide plates and second guide plates are respectively arranged in the zone and the second guide zone, a circulating cooling water pipe for cooling the flue gas is arranged in the deep cooling zone, and a demister is arranged in the demisting zone. The device is suitable for waste gas treatment in various industries such as coal-fired power plants, chemical industry, metallurgy, cement and the like, and can obviously reduce the emission of blue smoke plume.)

1. SO of degree of depth cooling coupling precharge₃The strengthening and reunion device is characterized in that: the device comprises an inlet end (1), a first pre-charging area (2), a first flow guide area (3), a deep cooling area (4), a second pre-charging area (5), a second flow guide area (6), a demisting area (7) and an outlet end (8) which are sequentially arranged along the smoke treatment direction, wherein the first pre-charging area (2),A first power supply (21) and a second power supply (51) are respectively arranged on the second pre-charging area (5), the first power supply (21) and the second power supply (51) respectively provide high-voltage negative electricity for the first pre-charging area (2) and the second pre-charging area (5), a plurality of first guide plates (31) and second guide plates (61) are respectively arranged in the first flow guide area (3) and the second flow guide area (6), a circulating cooling water pipe (41) used for cooling flue gas is arranged in the depth cooling area (4), and a demister is arranged in the demisting area (7).

2. The deeply-cooled coupled-precharged SO as claimed in claim 1₃The strengthening and reunion device is characterized in that: be provided with a plurality of recirculated cooling water pipe (41) in degree of depth cooling zone (4), recirculated cooling water pipe (41) are the coiled pipe that is circuitous and arranges, the both ends of recirculated cooling water pipe (41) have cooling water inlet (42) and cooling water export (43) respectively, cooling water inlet (42) set up in the one side of being close to entrance point (1), the cooling water in recirculated cooling water pipe (41) comes from recirculated cooling water system, and cooling water inlet (42) and cooling water export (43) link to each other with recirculated cooling water system.

3. The deeply-cooled coupled-precharged SO as claimed in claim 1₃The strengthening and reunion device is characterized in that: the first flow guide area (3) is in a horn mouth shape, and the section area of the first flow guide area (3) is gradually increased along the flue gas treatment direction.

4. The deeply-cooled coupled-precharged SO as claimed in claim 1₃The strengthening and reunion device is characterized in that: the second flow guide area (6) is in a horn mouth shape, and the section area of the second flow guide area (6) is gradually reduced along the flue gas treatment direction.

5. The deeply-cooled coupled-precharged SO as claimed in claim 1₃The strengthening and reunion device is characterized in that: the first power supply (21) provides 75kV high-voltage negative electricity for the first pre-charging area (2).

6. The deeply-cooled coupled-precharged SO as claimed in claim 1₃The strengthening and reunion device is characterized in that: the second power supply (51) provides 75kV high-voltage negative electricity for the second pre-charging area (5).

7. SO for an apparatus according to any of claims 1-6₃The method for strengthening agglomeration is characterized by comprising the following steps: the method sequentially comprises the following steps:

step S1, primary pre-charging: flue gas enters a first pre-charging area (2) from an inlet end (1), and the first pre-charging area (2) promotes air ionization of a local area of a flue through 75kV high-voltage negative electricity, so that small-particle-size filterable particles are charged;

s2, cooling: the flue gas treated in the step S1 enters a deep cooling area (4) from a first flow guide area (3) for cooling, the condensable particles are promoted to be effectively condensed, and the fine particles are promoted to be efficiently agglomerated under the action of turbulent drag force, temperature gradient force and coulomb force, wherein the condensable particles comprise SO₃；

S3, secondary pre-charging: the flue gas cooled after being treated in the step S2 enters a second pre-charging area (5), and the electric agglomeration among fine particles and large particles is further promoted in the second pre-charging area (5) through 75kV high-voltage negative electricity;

s4, demisting: and (4) allowing the flue gas treated in the step (S3) to enter a demisting zone (7) from a second flow guide zone (6), and removing the particles with certain cutting particle size and liquid drops through a demister.

8. A SO as claimed in claim 7₃The method for strengthening agglomeration is characterized by comprising the following steps: in the step S2, the temperature of the flue gas is reduced by 4-6 ℃ after the flue gas is subjected to temperature reduction treatment in the deep temperature reduction zone (4).

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of electric power environmental protection, in particular to a deep cooling coupled pre-charged SO₃An enhanced agglomeration device and a method thereof.

[ background of the invention ]

During the combustion of coal, a portion of the elemental sulfur is converted directly to sulfur trioxide (SO)₃) A portion of sulfur dioxide (SO)₂) Is oxidized by catalytic reduction at high temperature to be converted into sulfur trioxide (SO)₃). The sulfur trioxide reaches a certain concentration, and is easily discharged into the atmosphere to cause environmental pollution, so that the haze is aggravated. After sulfur trioxide enters the wet desulphurization tower, aerosol is formed and is discharged through a chimney to form blue smoke plume, which is a main reason for causing acid rain. Currently for SO₃The removal equipment has low efficiency, generally about 20 percent, and very limited removal efficiency on Condensable Particles (CPM) and Hg, and the deep cooling coupled pre-charging SO is provided₃An enhanced agglomeration device and a method thereof.

[ summary of the invention ]

The invention aims to solve the problems in the prior art and provides a deep cooling coupling pre-charging SO₃An enhanced agglomeration apparatus and method for increasing SO₃The method is suitable for waste gas treatment in various industries such as coal-fired power plants, chemical industry, metallurgy, cement and the like, and can obviously reduce the emission of blue smoke plume.

In order to achieve the purpose, the invention provides a deep cooling coupling pre-charging SO₃The strengthening agglomeration device comprises an inlet end, a first pre-charging area, a first flow guide area, a deep cooling area, a second pre-charging area, a second flow guide area, a demisting area and an outlet end which are sequentially arranged along the flue gas treatment direction, wherein a first power supply and a second power supply are respectively arranged on the first pre-charging area and the second pre-charging area, the first power supply and the second power supply respectively provide high-voltage negative electricity for the first pre-charging area and the second pre-charging area, a plurality of first guide plates and second guide plates are respectively arranged in the first flow guide area and the second flow guide area, a circulating cooling water pipe used for cooling flue gas is arranged in the deep cooling area, and a demister is arranged in the demisting area.

Preferably, a plurality of circulating cooling water pipes are arranged in the deep cooling area, the circulating cooling water pipes are serpentine pipes which are arranged in a roundabout manner, two ends of each circulating cooling water pipe are respectively provided with a cooling water inlet and a cooling water outlet, the cooling water inlets are arranged on one side close to the inlet ends, cooling water in the circulating cooling water pipes comes from the circulating cooling water system, and the cooling water inlets and the cooling water outlets are connected with the circulating cooling water system.

Preferably, the first flow guide area is in a bell mouth shape, and the cross-sectional area of the first flow guide area is gradually increased along the flue gas treatment direction.

Preferably, the second flow guide area is in a bell mouth shape, and the cross-sectional area of the second flow guide area is gradually reduced along the flue gas treatment direction.

Preferably, the first power supply provides 75kV high-voltage negative electricity for the first pre-charged region.

Preferably, the second power supply provides 75kV high-voltage negative electricity for the second pre-charged region.

SO of degree of depth cooling coupling precharge₃The method for strengthening agglomeration sequentially comprises the following steps:

step S1, primary pre-charging: flue gas enters a first pre-charging area from an inlet end, and the air ionization of the local area of the flue is promoted by the first pre-charging area through 75kV high-voltage negative electricity, so that small-particle-size filterable particles are charged;

s2, cooling: the flue gas treated in the step S1 enters a deep cooling area from a first diversion area for cooling, the effective condensation of condensable particles is promoted, and the high-efficiency agglomeration of fine particles is promoted under the action of turbulent drag force, temperature gradient force and coulomb force, wherein the condensable particles comprise SO₃；

S3, secondary pre-charging: the flue gas cooled after being treated in the step S2 enters a second pre-charging area, and electric agglomeration among fine particles and large particles is further promoted in the second pre-charging area through 75kV high-voltage negative electricity;

s4, demisting: and (4) allowing the flue gas treated in the step (S3) to enter a demisting zone from a second flow guide zone, and removing the particles reaching a certain cutting particle size and liquid drops together through a demister.

Preferably, in the step S2, the temperature of the flue gas is reduced by 4 to 6 ℃ after the flue gas is subjected to a deep cooling treatment.

The invention has the beneficial effects that: according to the invention, the first pre-charging area promotes air ionization in the local area of the flue, so that small-particle-size filterable particles are charged; the deep cooling zone can promote condensable particles (especially SO)₃) Effectively coagulate and promote the high-efficient agglomeration of fine particles; the second pre-charge area can further promote the electric agglomeration among fine particles and between the fine particles and the large particles; finally, the particles reaching a certain cutting particle size are efficiently removed together with the liquid drops through the efficient demister. The agglomeration efficiency of PM1 can reach more than 30%, and the particles (containing SO) can be coagulated₃) The removal rate can reach more than 50 percent, and the subsequent wet-type electric dust collector can effectively improve the PM2.5 and SO₃The removability of (1). The device is suitable for waste gas treatment in various industries such as coal-fired power plants, chemical industry, metallurgy, cement and the like, and can obviously reduce the emission of blue smoke plume.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

[ description of the drawings ]

FIG. 1 shows an SO with deep cooling coupled with pre-charging according to the present invention₃The schematic diagram of the internal structure of the strengthening agglomeration device;

FIG. 2 is an enhanced SO₃Schematic representation of the agglomeration mechanism.

[ detailed description ] embodiments

Referring to fig. 1, the invention relates to a deep cooling coupling pre-charging SO₃The strengthening agglomeration device comprises an inlet end 1, a first pre-charging area 2, a first flow guide area 3, a deep cooling area 4, a second pre-charging area 5, a second flow guide area 6, a demisting area 7 and an outlet end 8 which are sequentially arranged along the flue gas treatment direction, wherein a first power supply 21 and a second power supply 51 are respectively arranged on the first pre-charging area 2 and the second pre-charging area 5 in a matched mode, the first power supply 21 and the second power supply 51 respectively provide high-voltage negative electricity for the first pre-charging area 2 and the second pre-charging area 5, a plurality of first guide plates 31 and second guide plates 61 are respectively arranged in the first flow guide area 3 and the second flow guide area 6, a circulating cooling water pipe 41 used for cooling flue gas is arranged in the deep cooling area 4, and a demister is arranged in the demisting area 7.

Further, a plurality of circulating cooling water pipes 41 are arranged in the deep cooling area 4, the circulating cooling water pipes 41 are serpentine pipes which are arranged in a winding manner, two ends of each circulating cooling water pipe 41 are respectively provided with a cooling water inlet 42 and a cooling water outlet 43, the cooling water inlet 42 is arranged on one side close to the inlet end 1, cooling water in the circulating cooling water pipes 41 comes from the circulating cooling water system, and the cooling water inlets 42 and the cooling water outlets 43 are connected with the circulating cooling water system.

Further, the first flow guide area 3 is in a bell mouth shape, and the cross-sectional area of the first flow guide area 3 is gradually increased along the flue gas treatment direction. The second flow guide area 6 is in a horn mouth shape, and the section area of the second flow guide area 6 is gradually reduced along the flue gas treatment direction.

Further, the first power supply 21 provides 75kV high-voltage negative electricity for the first pre-charging area 2. The second power supply 51 provides 75kV high-voltage negative electricity for the second pre-charging area 5.

A kind ofDeep cooling coupled pre-charged SO₃The method for strengthening agglomeration sequentially comprises the following steps:

step S1, primary pre-charging: flue gas enters a first pre-charging area 2 from an inlet end 1, and the first pre-charging area 2 promotes air ionization in a local area of a flue through 75kV high-voltage negative electricity, so that small-particle-size filterable particles are charged;

s2, cooling: the flue gas treated in the step S1 enters the deep cooling area 4 from the first flow guide area 3 for cooling, the temperature of the flue gas is reduced by 4-6 ℃, and condensable particles (especially SO) are promoted₃) Effectively condensing, and promoting the high-efficiency agglomeration of fine particles under the action of turbulent drag force, temperature gradient force and coulomb force;

s3, secondary pre-charging: the flue gas cooled after being processed in the step S2 enters the second pre-charging area 5, and the electric agglomeration among the fine particles and the large particles is further promoted in the second pre-charging area 5 through 75kV high-voltage negative electricity;

s4, demisting: the flue gas treated in the step S3 enters the demisting zone 7 from the second flow guiding zone 6, and the particulate matters reaching a certain cutting particle size are removed together with the liquid droplets by the demister.

The device is suitable for waste gas treatment in various industries such as coal-fired power plants, chemical industry, metallurgy, cement and the like, and can obviously reduce the emission of blue smoke plume. The method can realize PM1 agglomeration efficiency of more than 30%, and can coagulate particulate matters (containing SO)₃) More than 50 percent of the waste gas is removed, and the PM2.5 and SO of the subsequent wet-type electric dust remover are effectively improved₃The removability of (1).

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.