CN1884124A - Device for desulfurization and recovery of seawater by industrial flue gas - Google Patents
Device for desulfurization and recovery of seawater by industrial flue gas Download PDFInfo
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- CN1884124A CN1884124A CN 200610098749 CN200610098749A CN1884124A CN 1884124 A CN1884124 A CN 1884124A CN 200610098749 CN200610098749 CN 200610098749 CN 200610098749 A CN200610098749 A CN 200610098749A CN 1884124 A CN1884124 A CN 1884124A
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Abstract
The invention discloses a desulfurizing seawater restoring device of industrial flue gas seawater, which comprises the following parts: pool (1), distribution region (2) interconnected by several separated transverse baffles, blending region (16), aeration region (3) and discharge region (5), wherein the fresh seawater inlet (6) is set in the distribution region (2); the desulfurizing seawater input pipe (7) is set in the blending region (16); the seawater drainage (8) is set in the discharge region (5); the aeration pipe (9) is set on the aeration region (3), which connects aeration fan (10) and several branch-pipes (11) with each end of branch-pipe (11) lying at aeration head (12) with vent hole (13) on the bottom of pool.
Description
Technical Field
The invention relates to a sewage treatment device, in particular to an industrial flue gas seawater desulfurization water quality recovery device.
Background
The exhaust gas exhausted from boilers and kilns commonly used in the industries of electric power, chemical industry, metallurgy and the like contains a large amount of sulfur dioxide, which causes serious pollution to the atmosphere and is a main pollution source formed by acid rain. Due to the environmental protection requirement, the flue gas discharged from industrial combustion plants must be freed of some or most of the SO before it is discharged into the atmosphere2It is commonly referred to as a flue gas desulfurization process, i.e., the FGD (gas desulfurization) process. At present, the lime/limestone-gypsum method which is commonly adopted at home and abroad utilizes the characteristic that lime or limestone can react with sulfur dioxide to carry out wet desulphurization and washing on flue gas so as to achieve the aim of purifying the flue gas; however, the method has the defects that the final desulfurization byproduct of the lime/limestone-gypsum method is gypsum which is restricted by the process and the market, the gypsum can not be commercialized, only occupies land to be discarded and stacked, and secondary pollution is formed, and the defects greatly restrict the development of the desulfurization environmental protection industry.
Disclosure of Invention
The invention aims to overcome the defects and provide a water quality recovery device which utilizes the seawater which needs to be discharged after cooling a boiler to efficiently and inexpensively desulfurize the flue gas discharged from the boiler so that the seawater which participates in desulfurization is not polluted after being discharged into the sea.
The invention relates to an industrial flue gas seawater desulfurization seawater recovery device, which comprises a tank body 1, wherein a water distribution area 2, a mixing area 16, an aeration area 3 and a discharge area 5 which are communicated with each other are sequentially partitioned in the tank body 1 by a plurality of transverse partition walls; the water distribution area 2 is provided with a fresh seawater inlet 6; the mixing area 16 is provided with a desulfurization seawater input pipe 7; the discharge area 5 is provided with a seawater discharge port 8; the aeration zone upper portion is equipped with aeration pipe 9, and aeration pipe 9 links to each other with aeration fan 10, and aeration pipe 9 intercommunication has a plurality of branch pipes 11, and the end of each branch pipe 11 is equipped with aeration head 12 of taking gas outlet 13, and aeration head 12 is located aeration zone bottom of the pool.
The invention relates to an industrial flue gas seawater desulfurization seawater recovery device, wherein a bypass area 4 is arranged between a water distribution area 2 and a discharge area 5.
According to the industrial flue gas seawater desulfurization seawater recovery device, a plurality of gaps are formed in a partition wall between the water distribution area 2 and the aeration area 3; the mixing zone 16 and the aeration zone 3 are separated by a plurality of longitudinal partition walls 14 which are parallel to each other; the height of the transverse partition wall 15 between the aeration zone 3 and the discharge zone 5 is lower than that of the longitudinal partition wall 14.
According to the industrial flue gas seawater desulfurization seawater recovery device, the fresh seawater inlet 6 and the seawater discharge outlet 8 are both pipelines with rectangular sections.
According to the industrial flue gas seawater desulfurization seawater recovery device, the desulfurization seawater input pipe 7 is a circular-section pipeline, a plurality of water outlet holes are distributed on the side wall of the mixing area part, the tail end of the pipeline is closed, and the pipeline is located at the lower part of the mixing area 16.
The industrial flue gas seawater desulfurization seawater recovery device comprises an aeration head 12, a water inlet pipe, a water outlet pipe and a water inlet pipe, wherein one end of the aeration head is closed; a plurality of air outlets 13 are distributed at the lower positions of the side walls at the two sides of the aeration head 12, and the cross section of the air outlets is rectangular or circular.
The industrial flue gas seawater desulfurization seawater recovery device comprises a tank body and a partition wall which are made of reinforced concrete, and a desulfurization seawater input pipe 7, an aeration pipe 9, a branch pipe 11 and an aeration head 12 which are made of glass fiber reinforced plastics.
The seawater flue gas desulfurization is to remove SO in flue gas by using the natural alkalinity of seawater2. The seawater desulfurization process can be classified into two types according to whether other chemical absorbents are added. One is a process using pure seawater as an absorbent, and the other is a process in which a certain amount of lime is added to seawater to adjust the alkalinity of an absorption liquid.
Since the rainwater carries the alkaline material of the onshore rock formation to the sea, natural seawater contains a large amount of soluble salts, the main components of which are sodium chloride and sulphate and a certain amount of soluble carbonates. The seawater is usually alkaline, the pH value is generally between 7.5 and 8.3, soluble salts in the seawater can be generally mutually converted with acid salts of the soluble salts, so the ocean is a huge buffer system with natural alkalinity, the pH value of the desulfurized seawater can be recovered by depending on the natural alkalinity of the seawater, the aim of flue gas desulfurization is fulfilled, and the requirement of seawater discharge can be met.
The industrial flue gas seawater desulfurization water quality recovery device of the invention relates to a chemical reaction formula as follows:
other details and characteristics of the industrial flue gas seawater desulfurization water quality restoration device can be clearly understood by reading the embodiments described in detail in the following with reference to the attached drawings.
Drawings
FIG. 1 is a top view of the industrial flue gas seawater desulfurization seawater recovery device of the present invention;
FIG. 2 is a cross-sectional view taken along line D-D of FIG. 3;
FIG. 3 is a sectional view taken along line A-A of FIG. 1;
FIG. 4 is a sectional view taken along line B-B of FIG. 1;
FIG. 5 is an enlarged view of section C of FIG. 4;
FIG. 6 is an enlarged view of section E-E of FIG. 5;
fig. 7 is another embodiment of fig. 6.
Detailed Description
As shown in figures 1, 2, 3 and 4, the industrial flue gas seawater desulfurization water quality recovery device disclosed by the invention, in particular to a flue gas seawater desulfurization water quality recovery device for a coal-fired boiler of a thermal power station, which comprises a rectangular tank body 1 made of reinforced concrete, wherein the length of the tank body is 34m, the width is 47m, the depth is 3m, and a transverse partition wall made of reinforced concrete is divided into a water distribution area 2, a mixing area 16, an aeration area 3, a bypass area 4 and a discharge area 5 which are communicated with each other. The partition wall between the water distribution area 2 and the mixing area 16 is provided with 8 narrow slits through which the seawater can pass. The mixing area 16 and the aeration area 3 are respectively divided into four parts by 3 longitudinal partition walls 14 which are parallel to the side walls of the two sides of the tank body. A fresh seawater inlet 6 is arranged on the front end wall of the tank body, and the section of the fresh seawater inlet 6 is rectangular. The mixing zone 16 is provided with a desulphurised seawater inlet pipe 7, of circular cross-section and made of glass fibre reinforced plastics (commonly known as glass fibre reinforced plastics). The rear end wall of thetank body is provided with a seawater discharge port 8 with a rectangular section. An air distribution chamber 17 is arranged above the water distribution area 2, 2 aeration fans 10 are arranged on the air distribution chamber 17, the air outlets of the aeration fans 10 are connected with an air distribution chamber 15, the side wall of the air distribution chamber 17 is connected with 8 aeration pipes 9, and the lower part of each aeration pipe 9 is communicated with 7 branch pipes 11. As shown in fig. 5, 6 and 7, each branch pipe 11 extends into the seawater in the aeration zone 3, the end of the branch pipe is provided with an aeration head 12, two sides of the aeration head 12 are respectively provided with a discharge hole 13, the cross section of the aeration head 12 is rectangular or circular, and the discharge holes are square or circular.
The cooling seawater of the coal-fired boiler of the thermal power station flows into the water distribution area 2 through a fresh seawater inlet 6, one part of the cooling seawater flows into the mixing area 16 through a gap of a partition wall between the water distribution area and the mixing area, and the other part of the cooling seawater flows into the bypass area 4. The desulfurization waste water which washes the flue gas of the coal-fired boiler of the thermal power station flows into the mixing area 16 through the water outlet hole on the desulfurization seawater input pipe 7, and the desulfurization waste water contains SO3 2-. The fresh seawater and the desulfurization wastewater are fully mixed and diluted in the mixing zone 16 and then flow into the aeration zone 3. The aeration fan 10 sends air into an aeration pipe 9 communicated with the air distribution chamber 17 through the air distribution chamber 17, the air is discharged from an aeration head 12 through a branch pipe 11, the air reacts with the mixed seawater to react unstable SO3 2-By oxidation to form stable SO4 2-The treated mixed seawater is mixed with fresh seawater in a bypass area in a discharge area 5, and the treated mixed seawater is discharged into the sea through a seawater discharge port 8 after the pH value of the treated mixed seawater reaches the national seawater discharge standard.
The industrial flue gas seawater desulfurization water quality recovery device has the specific geometric dimensions which are different according to the actual engineering requirements, and the bypass area can be omitted according to the actual engineering conditions. The industrial flue gas seawater desulfurization water quality recovery device is also suitable for treating other industrial flue gas desulfurization waste water.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design solutions of the present invention shall fall within the protection scope of the present invention, and the technical contents of the present invention as claimed are all described in the claims.
Claims (7)
1. The utility model provides an industrial flue gas sea water desulfurization sea water recovery unit, includes a cell body (1), its characterized in that: a water distribution area (2), a mixing area (16), an aeration area (3) and a discharge area (5) which are communicated with each other are sequentially separated from the tank body (1) by a plurality of transverse partition walls; the water distribution area (2) is provided with a fresh seawater inlet (6); the mixing area (16) is provided with a desulfurization seawater input pipe (7); the discharge area (5) is provided with a seawater discharge port (8); aeration pipe (9) is arranged on the upper portion of the aeration area, aeration pipe (9) is connected with aeration fan (10), aeration pipe (9) is communicated with a plurality of branch pipes (11), the tail end of each branch pipe (11) is provided with an aeration head (12) with an air outlet hole (13), and aeration head (12) is located at the bottom of the aeration area.
2. The industrial flue gas seawater desulfurization seawater recovery device according to claim 1, characterized in that: a bypass area (4) is arranged between the water distribution area (2) and the discharge area (5).
3. The industrial flue gas seawater desulfurization seawater recovery device according to claim 1 or 2, characterized in that: a plurality of gaps are formed on the partition wall between the water distribution area (2) and the aeration area (3); the mixing zone (16) and the aeration zone (3) are separated by a plurality of longitudinal partition walls (14) which are parallel to each other; the height of the transverse partition wall (15) between the aeration zone (3) and the discharge zone (5) is lower than that of the longitudinal partition wall (14).
4. The industrial flue gas seawater desulfurization seawater recovery device according to claim 3, characterized in that: the fresh seawater inlet (6) and the seawater discharge outlet (8) are both pipelines with rectangular sections.
5. The industrial flue gas seawater desulfurization seawater recovery device according to claim 4, characterized in that: the desulfurization seawater input pipe (7) is a circular-section pipeline, a plurality of water outlet holes are distributed on the side wall of the mixing area part, the tail end of the pipeline is closed, and the pipeline is positioned at the lower part of the mixing area (16).
6. The industrial flue gas seawater desulfurization seawater recovery device according to claim 5, characterized in that: the aeration head (12) is a pipeline with one closed end, and the section of the pipeline is rectangular or circular; a plurality of air outlet holes (13) are distributed on the lower positions of the side walls of the two sides of the aeration head (12), and the cross section of the air outlet holes is rectangular or circular.
7. The industrial flue gas seawater desulfurization seawater recovery device according to claim 6, characterized in that: the tank body and the partition wall are made of reinforced concrete, and the desulfurization seawater input pipe (7), the aeration pipe (9), the branch pipe (11) and the aeration head (12) are made of glass fiber reinforced plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610098749 CN1884124A (en) | 2006-07-12 | 2006-07-12 | Device for desulfurization and recovery of seawater by industrial flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610098749 CN1884124A (en) | 2006-07-12 | 2006-07-12 | Device for desulfurization and recovery of seawater by industrial flue gas |
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| CN1884124A true CN1884124A (en) | 2006-12-27 |
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| CN 200610098749 Pending CN1884124A (en) | 2006-07-12 | 2006-07-12 | Device for desulfurization and recovery of seawater by industrial flue gas |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101468296B (en) * | 2008-08-19 | 2011-01-26 | 何强 | Low noise aeration apparatus for seawater recovery after desulphurization |
| CN101269872B (en) * | 2007-11-01 | 2011-03-09 | 北京博奇电力科技有限公司 | Water quality recovery method |
| CN101468297B (en) * | 2008-08-19 | 2012-01-25 | 杨东 | Load adjustable aeration apparatus for restoring sea water after desulphurization |
| CN102407067A (en) * | 2010-09-21 | 2012-04-11 | 鞍钢股份有限公司 | Seawater desulfurization process and desulfurization system for sintering flue gas |
| CN104203839A (en) * | 2012-03-30 | 2014-12-10 | 三菱日立电力系统株式会社 | Seawater desulfurization and oxidation treatment device and seawater flue-gas desulfurization system |
| CN105417675A (en) * | 2015-12-09 | 2016-03-23 | 大唐环境产业集团股份有限公司 | Device and method for restoring desulphurized sea water based on pure oxygen aeration |
| CN106745987A (en) * | 2016-12-21 | 2017-05-31 | 武汉凯迪电力环保有限公司 | A kind of high-efficiency low energy consumption sea water desulfuration oxidative system |
| CN108218050A (en) * | 2018-03-23 | 2018-06-29 | 东方电气集团东方锅炉股份有限公司 | The quality recovery device and restoration methods of acid seawater after a kind of flue gas desulfurization with seawater |
| CN113429025A (en) * | 2021-07-14 | 2021-09-24 | 东方电气集团东方锅炉股份有限公司 | Aeration device suitable for seawater method flue gas desulfurization aeration tank |
-
2006
- 2006-07-12 CN CN 200610098749 patent/CN1884124A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269872B (en) * | 2007-11-01 | 2011-03-09 | 北京博奇电力科技有限公司 | Water quality recovery method |
| CN101468296B (en) * | 2008-08-19 | 2011-01-26 | 何强 | Low noise aeration apparatus for seawater recovery after desulphurization |
| CN101468297B (en) * | 2008-08-19 | 2012-01-25 | 杨东 | Load adjustable aeration apparatus for restoring sea water after desulphurization |
| CN102407067A (en) * | 2010-09-21 | 2012-04-11 | 鞍钢股份有限公司 | Seawater desulfurization process and desulfurization system for sintering flue gas |
| CN104203839B (en) * | 2012-03-30 | 2016-04-13 | 三菱日立电力系统株式会社 | Sea water desulfuration oxidizing treater and system of flue-gas desulfurization with seawater |
| CN104203839A (en) * | 2012-03-30 | 2014-12-10 | 三菱日立电力系统株式会社 | Seawater desulfurization and oxidation treatment device and seawater flue-gas desulfurization system |
| CN105417675A (en) * | 2015-12-09 | 2016-03-23 | 大唐环境产业集团股份有限公司 | Device and method for restoring desulphurized sea water based on pure oxygen aeration |
| CN105417675B (en) * | 2015-12-09 | 2018-01-19 | 大唐环境产业集团股份有限公司 | A kind of desulfurization restoring sea water device and restoration methods based on pure oxygen aeration |
| CN106745987A (en) * | 2016-12-21 | 2017-05-31 | 武汉凯迪电力环保有限公司 | A kind of high-efficiency low energy consumption sea water desulfuration oxidative system |
| CN106745987B (en) * | 2016-12-21 | 2023-03-14 | 武汉凯迪电力环保有限公司 | High-efficient low energy consumption sea water desulfurization oxidation system |
| CN108218050A (en) * | 2018-03-23 | 2018-06-29 | 东方电气集团东方锅炉股份有限公司 | The quality recovery device and restoration methods of acid seawater after a kind of flue gas desulfurization with seawater |
| CN113429025A (en) * | 2021-07-14 | 2021-09-24 | 东方电气集团东方锅炉股份有限公司 | Aeration device suitable for seawater method flue gas desulfurization aeration tank |
| CN113429025B (en) * | 2021-07-14 | 2022-09-20 | 东方电气集团东方锅炉股份有限公司 | Aeration method suitable for seawater flue gas desulfurization aeration tank |
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Open date: 20061227 |