Flue gas desulfurization and water collection equipment for carbon black production

By setting up a desulfurization tower and a water collection tower in the carbon black flue gas desulfurization water collection equipment, the cooperation of the spray parts and defogging components is used to solve the problems of high temperature and waste of water resources after flue gas desulfurization, and efficient flue gas purification and water resource utilization are achieved.

CN120054208APending Publication Date: 2025-05-30WUHAI BLACK CAT CARBON BLACK
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Patent Information

Application Number
CN202510403064.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-01
Publication Date
2025-05-30

AI Technical Summary

Technical Problem

The temperature of the net flue gas after desulfurization is high, carrying a large amount of water vapor, resulting in waste of water resources and a white "smoke plume" phenomenon at the discharge port.

Method used

A desulfurization and water collection equipment for flue gas production is designed, including a desulfurization tower and a water collection tower. Through the cooperation of the spray parts and the defog assembly, the flue gas is fully contacted and heat exchanged with the slurry and condensate, the flue gas temperature is reduced and the water vapor is converted into liquid water.

Benefits of technology

It effectively reduces the waste of water resources, avoids the white "smoke plume" phenomenon at the discharge port, and improves the flue gas purification efficiency.

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Abstract

The invention relates to the technical field of thermal power plant flue gas treatment, in particular to carbon black production flue gas desulfurization and water collection equipment which comprises a desulfurization tower and a water collection tower. A first flue gas inlet is formed in the lower part of one side of the desulfurization tower; a first flue gas outlet is formed in the top of the desulfurization tower; a slurry storage cavity is formed in the lower part of the interior of the desulfurization tower; a first spraying piece is mounted in the middle of the interior of the desulfurization tower; and the first spraying piece is communicated with the slurry storage cavity through the slurry circulating pump. A second flue gas inlet is formed in the lower part of one side of the water collecting tower, a second flue gas outlet is formed in the top, a condensate storage cavity is formed in the lower part in the water collecting tower, a second spraying piece is mounted in the middle in the water collecting tower, and a second demisting assembly is mounted on the upper part in the water collecting tower. And the second flue gas inlet is communicated with the first flue gas outlet through a flue gas conveying pipeline. And the second spraying piece is communicated with the condensate storage cavity through a cooling loop. On the whole, waste of water resources is effectively reduced, and the phenomenon of white smoke plume at the discharge outlet is avoided.
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Description

Technical Field

[0001] The invention relates to the technical field of flue gas treatment in thermal power plants, and in particular to a flue gas desulfurization and water collection device for carbon black production. Background Art

[0002] The flue gas produced by the combustion of carbon black tail gas power generation boilers contains a large amount of sulfur dioxide, which is one of the main causes of acid rain in the current environmental governance. In response to the concept of sustainable development and to protect the living environment of human beings, the flue gas after boiler combustion must be purified by a desulfurization tower before it can be discharged. Therefore, as an important environmental protection facility, the desulfurization tower plays a vital role in meeting the environmental protection requirements of power generation boiler flue gas emissions. However, due to the high temperature of the net flue gas after flue gas desulfurization (about 80°C), the flue gas carries a large amount of water vapor when it is discharged, which not only causes a waste of water resources, but also causes a white "smoke plume" phenomenon at the discharge port. Summary of the invention

[0003] The present invention provides a carbon black production flue gas desulfurization water collection device, which is used to solve the problem that the flue gas carries a large amount of water vapor when discharged, which not only causes a waste of water resources but also causes a white "smoke plume" phenomenon at the discharge port.

[0004] The present invention provides a carbon black production flue gas desulfurization water collection device, comprising: The desulfurization tower has a first flue gas inlet formed at the lower part of one side, a first flue gas outlet formed at the top, a slurry storage chamber formed at the lower part of the interior, a first spray component installed at the middle part of the interior, and a first demisting component installed at the upper part of the interior; the first spray component is connected to the slurry storage chamber through a slurry circulation pump; A water collecting tower is provided with a second smoke inlet at the lower part of one side, a second smoke outlet at the top, a condensate storage chamber at the lower part of the interior, a second spray component is installed in the middle part of the interior, and a second defogger assembly is installed in the upper part of the interior; the second smoke inlet is connected to the first smoke outlet; the second spray component is connected to the condensate storage chamber through a cooling circuit.

[0005] In some embodiments, the cooling circuit comprises: A condensate circulation pump, the inlet of which is connected to the condensate storage chamber; The air cooling island is connected to the outlet of the condensate circulation pump.

[0006] In some embodiments, the cooling circuit further comprises: The closed cooling tower has an inlet connected to the air cooling island and an outlet connected to the second spraying element.

[0007] In some embodiments, it also includes: The outlet water filter pipeline is connected to the outlet of the closed cooling tower.

[0008] In some of these embodiments, the effluent filtration pipeline includes: A shallow - medium filter, whose inlet is connected to the outlet of the closed - type cooling tower; A precision filter, whose inlet is connected to the outlet of the shallow - medium filter; An infusion pump, whose inlet is connected to the outlet of the precision filter.

[0009] In some of these embodiments, the first demisting component includes: A pitched - plate demister, which has two layers and is arranged one above the other; A tube - bundle demister, which has one layer and is arranged above the two - layer pitched - plate demister.

[0010] In some of these embodiments, the second demisting component includes: A flat - plate demister, which has two layers and is arranged one above the other; A wire - mesh demister, which has one layer and is arranged below the two - layer flat - plate demister.

[0011] In some of these embodiments, it further includes: A slurry - replenishing pump, which is connected to the slurry storage chamber.

[0012] The beneficial effects of the present invention are as follows: The flue - gas desulfurization and water - recovery equipment for carbon - black production of the present invention, by setting up a desulfurization tower and a water - recovery tower, the hot flue gas at 190 °C flows into the desulfurization tower from the first flue - gas inlet and moves upward. The lime water with a temperature of about 60 °C and a pH of 5.2 - 5.8 in the slurry storage chamber is atomized by the first spraying member and moves downward in the desulfurization tower, fully contacting and reacting with the rising hot flue gas to generate calcium sulfite. The temperature of the reacted flue gas is reduced to about 80 °C and continues to rise while carrying calcium sulfite. When passing through the first demisting component, the first demisting component can effectively remove calcium sulfite, soot and other harmful substances in the flue gas. Then, the flue gas at 80 °C and with a humidity of about 26% flows into the water - recovery tower in sequence through the first flue - gas outlet, the flue - gas conveying pipeline and the second flue - gas inlet and moves upward. The condensed water in the condensate storage chamber is cooled through the cooling circuit and reaches the second spraying member, and after being atomized by the second spraying member, it moves downward in the water - recovery tower, fully contacting and exchanging heat with the rising flue gas, further reducing the temperature of the flue gas and converting the water vapor in the flue gas into liquid water, which falls into the condensate storage chamber. Then, when the continuously rising flue gas passes through the second demisting component, the second demisting component can effectively remove the liquid droplets in the flue gas. Finally, the flue gas is discharged from the second flue - gas outlet. Since the water separated from the flue gas can be utilized, the waste of water resources is effectively reduced, and the phenomenon of white "smoky plume" at the discharge port is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of some specific embodiments of a flue - gas desulfurization and water - recovery equipment for carbon - black production according to the present invention; Figure 2 It is a schematic structural diagram of some specific embodiments of a flue gas desulfurization and water collection device for carbon black production according to the present invention.

[0014] In the attached drawings, 110 is a desulfurization tower; 111 is a first spraying member; 112 is a first demisting assembly; 120 is a slurry circulation pump; 130 is a water collection tower; 131 is a second spraying member; 132 is a second demisting assembly; 140 is a cooling circuit; 141 is a condensate circulation pump; 142 is an air-cooled island; 143 is a closed cooling tower; 150 is an effluent filtration pipeline; 151 is a shallow medium filter; 152 is a precision filter; 153 is a liquid delivery pump; 160 is a slurry supplement pump; 170 is a flue gas delivery pipeline; 171 is a first delivery pipe section; 172 is a second delivery pipe section; 173 is a third delivery pipe section; 174 is a fourth delivery pipe section; 175 is a condensate pipe. Specific embodiments

[0015] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0016] As described in the background art, the flue gas after boiler combustion must be purified by a desulfurization tower before being discharged. Therefore, as an important environmental protection facility, the desulfurization tower plays a crucial role in meeting the environmental protection requirements for the discharge of flue gas from power generation boilers. However, due to the relatively high temperature of the clean flue gas after flue gas desulfurization (about 80°C), a large amount of water vapor is carried when the flue gas is discharged, which not only causes waste of water resources but also causes the white "plume" phenomenon at the discharge port.

[0017] To solve the above problems, referring to Figure 1 and Figure 2 , the present invention provides a flue gas desulfurization and water collection device for carbon black production, including a desulfurization tower 110 and a water collection tower 130. A first flue gas inlet is formed at the lower part on one side of the desulfurization tower 110, a first flue gas outlet is formed at the top, a slurry storage cavity for storing slurry is formed at the lower part inside, a first spraying member 111 is installed in the middle inside, and a first demisting assembly 112 is installed at the upper part inside. The first spraying member 111 is communicated with the slurry storage cavity through a slurry circulation pump 120. A second flue gas inlet is formed at the lower part on one side of the water collection tower 130, a second flue gas outlet is formed at the top, a condensate storage cavity for storing condensate is formed at the lower part inside, a second spraying member 131 is installed in the middle inside, and a second demisting assembly 132 is installed at the upper part inside. The second flue gas inlet is communicated with the first flue gas outlet through a flue gas delivery pipeline 170. The second spraying member 131 is communicated with the condensate storage cavity through a cooling circuit 140.

[0018] The working process and principle of the flue gas desulfurization and water collection equipment for carbon black production are as follows: Hot flue gas at 190°C flows into the desulfurization tower 110 from the first flue gas inlet and moves upward. The lime water with a temperature of about 60°C and a pH of 5.2 - 5.8 in the slurry storage cavity is atomized by the first spraying member 111 and moves downward in the desulfurization tower 110, fully contacting and reacting with the rising hot flue gas to generate calcium sulfite. The temperature of the reacted flue gas drops to about 80°C and continues to rise while carrying calcium sulfite. When passing through the first demisting assembly 112, the first demisting assembly 112 can effectively remove calcium sulfite, soot and other harmful substances in the flue gas. Then, the flue gas at 80°C and with a humidity of about 26% flows into the water collection tower 130 through the first flue gas outlet, the flue gas transmission pipeline 170 and the second flue gas inlet in sequence and moves upward. The condensed water in the condensate storage cavity is cooled by the cooling circuit 140 and then reaches the second spraying member 131. After being atomized by the second spraying member 131, it moves downward in the water collection tower 130, fully contacting and exchanging heat with the rising flue gas, further reducing the temperature of the flue gas and converting the water vapor in the flue gas into liquid water, which falls into the condensate storage cavity. Then, when the continuously rising flue gas passes through the second demisting assembly 132, the second demisting assembly 132 can effectively remove the droplets in the flue gas. Finally, the flue gas is discharged from the second flue gas outlet. Since the water separated from the flue gas can be utilized, the waste of water resources is effectively reduced, and the phenomenon of white "smoke plume" at the discharge port is avoided.

[0019] Preferably, the first spraying member 111 and the second spraying member 131 are respectively provided with a plurality of shunt branch pipes, and each shunt branch pipe is provided with a plurality of nozzles.

[0020] Preferably, a pH on-line monitoring system and a condensate replenishing pump are also provided. The outlet of the condensate replenishing pump is communicated with the condensate storage cavity for replenishing condensed water into the condensate storage cavity. The pH on-line monitoring system includes a pH detector and a controller. The pH detector is installed in the condensate storage cavity for detecting the pH value of the condensed water in the condensate storage cavity. The controller is electrically connected to the pH detector and the condensate replenishing pump respectively, and can control whether the condensate replenishing pump works according to the pH value detected by the pH detector to adjust the pH value of the condensed water in the condensate storage cavity, prevent the corrosion of equipment by condensed water under abnormal conditions, and also ensure the quality of the externally supplied water. The condensate storage cavity can store up to about 200 tons of condensed water, which can effectively prevent the occurrence of overflow or water shortage caused by sudden changes in the externally supplied water volume.

[0021] In some of these applications, the cooling circuit 140 includes a condensate circulation pump 141 and an air-cooled island 142. The inlet of the condensate circulation pump 141 communicates with the condensate storage chamber. The inlet of the air-cooled island 142 communicates with the outlet of the condensate circulation pump 141, and the outlet communicates with the second spraying member 131. The condensate circulation pump 141 provides power for the flow of the condensate. The air-cooled island 142 is used to cool down the condensate so that the temperature of the condensate is lower than the normal temperature.

[0022] In some other practical applications, such as Figure 1 as shown, the cooling circuit 140 includes a condensate circulation pump 141, an air-cooled island 142, and a closed cooling tower 143. The inlet of the condensate circulation pump 141 communicates with the condensate storage chamber. The inlet of the air-cooled island 142 communicates with the outlet of the condensate circulation pump 141. The inlet of the closed cooling tower 143 communicates with the outlet of the air-cooled island 142, and the outlet communicates with the second spraying member 131. The outlet of the air-cooled island 142 also communicates with the second spraying member 131. The condensate circulation pump 141 provides power for the flow of the condensate. The air-cooled island 142 is used to cool down the condensate so that the temperature of the condensate is lower than the normal temperature. The closed cooling tower 143 further cools down the condensate so that the temperature of the condensate is lower than the normal temperature. In summer, the air-cooled island 142 and the closed cooling tower 143 work in series, and the closed cooling tower 143 conveys the condensate to the second spraying member 131. With the help of the closed cooling tower 143, the defect that the air-cooled island 142 cannot meet the cooling demand due to the relatively high ambient temperature in summer is made up, and the temperature of the condensate water is reduced to the greatest extent to improve the water collection efficiency and the water collection amount. In winter, both the air-cooled island 142 and the closed cooling tower 143 do not work or only the air-cooled island 142 works, and the air-cooled island 142 conveys the condensate to the second spraying member 131. With the help of the low ambient temperature, the temperature of the condensate reaches the working condition requirement to reduce the power consumption.

[0023] Preferably, the air-cooled island 142 is provided with twelve columns of air-cooling fan groups, and there are four closed cooling towers 143. Each closed cooling tower 143 corresponds to three columns of air-cooling fan groups. The number of operating units can be freely adjusted according to the water supply demand.

[0024] Preferably, the condensate circulation pump 141 is a variable-frequency pump. In winter, the water collection amount is relatively high and the liquid level in the water collection tower 130 is relatively high. The operating frequency of the condensate circulation pump 141 can be reduced to prevent the water collection tower 130 from overflowing due to excessive water collection amount. In summer, the water collection amount is relatively low and the liquid level in the water collection tower 130 is relatively low. The operating frequency of the condensate circulation pump 141 can be increased to appropriately increase the water collection amount.

[0025] Specifically, in the demonstration example, the carbon black production flue gas desulfurization and water recovery device further includes an outlet filtration pipeline 150. The outlet filtration pipeline 150 is communicated with the outlet of the closed cooling tower 143. Water can be supplied to users through the outlet filtration pipeline 150. The outlet filtration pipeline 150 includes a shallow medium filter 151, a precision filter 152 and a liquid delivery pump 153. The inlet of the shallow medium filter 151 is communicated with the outlet of the closed cooling tower 143. The inlet of the precision filter 152 is communicated with the outlet of the shallow medium filter 151. The inlet of the liquid delivery pump 153 is communicated with the outlet of the precision filter 152. It should be noted that the shallow medium filter 151 can preliminarily filter water and remove larger particle impurities in the water. The precision filter 152 uses a 5μm filter element and can perform secondary filtration on water to remove tiny particle impurities and microorganisms in the water. The liquid delivery pump 153 can provide power for the long-distance transportation of water. Specifically, the shallow medium filter 151 mainly uses refined quartz sand particles as the filter media layer, which can remove impurities and colloids in the water. Due to the reasonable design of the filter media layer, the flow resistance of water during the filtration process is small. The quartz sand particles have a large specific surface area, which helps to improve the filtration effect. It can resist the corrosion of acid-base environments and is suitable for various water quality conditions. The filter media layer can be fully dispersed during backwashing, with good cleaning effect and not easy to accumulate pollutants. The shallow medium filter 151 has two backwashing modes: time-based backwashing and differential pressure backwashing. When the shallow medium filter 151 operates for 8 hours or the inlet and outlet differential pressure increases, the shallow medium filter 151 automatically backwashes to ensure the quality of the externally supplied water. The precision filter 152 usually uses more refined filter media, such as microporous membranes, filter papers or other high-performance filter materials, to achieve higher filtration accuracy. It can effectively remove tiny particles and microorganisms, and the filtration accuracy can reach the micron or even nanometer level. It can be used for the fine filtration of various liquids, including industries such as medicine, food, and chemical engineering. According to different application requirements, filter materials of different materials can be selected, such as polypropylene, nylon, fiberglass, etc. It has a high-efficiency interception ability for fine particles and microorganisms, ensuring the purity of the outlet water quality.

[0026] Specifically, in the demonstration example, the first demisting component 112 includes two layers of ridged demisters and one layer of tube-bundle demisters. The two ridged demisters are arranged vertically. One layer of tube-bundle demisters is arranged above the two layers of ridged demisters. When the flue gas containing droplets passes through the blades of the lower ridged demister, after several direction changes, the droplets are thrown onto the blades under the action of inertia and centrifugal force, achieving gas-liquid separation to remove large particulate droplets in the flue gas. Then, when the flue gas containing droplets passes through the blades of the upper ridged demister, after several direction changes, the droplets are thrown onto the blades under the action of inertia and centrifugal force, achieving gas-liquid separation to remove small particulate droplets in the flue gas. Then, relying on the characteristics that the upper low-temperature saturated flue gas in the desulfurization tower 110 contains a large number of fine droplets, the probability of collision between fly ash particles and droplets is increased by the high-speed movement of the fine droplets, causing the droplets and fly ash particles to coagulate. Through the three motion states of coagulation, capture, and annihilation, during the high-speed swirling, violent mixing, and rotational movement of the flue gas, the finer droplets and dust particles carried in the flue gas are removed.

[0027] Specifically, in the demonstration example, the second demisting component 132 includes two layers of flat demisters and one layer of wire mesh demisters. The two flat demisters are arranged vertically. One layer of wire mesh demisters is arranged below the two layers of flat demisters. When the flue gas containing liquid droplets passes through the wire mesh demister, it is divided into many single-strand channels, and gas-liquid separation is achieved through the interception, inertial collision, etc. of the wire mesh, which is used to separate the mist droplets with a liquid droplet diameter greater than 3μm - 5μm entrained in the flue gas. After that, when the flue gas containing liquid droplets slowly passes through the two layers of flat demisters, the liquid droplets in the flue gas collide with the baffle under the action of inertia through the baffle and are captured, achieving gas-liquid separation, which can effectively remove the liquid droplets larger than 5μm in the flue gas, and the removal efficiency is greater than 95%.

[0028] Specifically, in the demonstration example, the carbon black production flue gas desulfurization and water recovery equipment further includes a slurry replenishing pump 160. The outlet of the slurry replenishing pump 160 is communicated with the slurry storage cavity, and is used to replenish lime water into the slurry storage cavity.

[0029] Specifically, in the demonstration example, as Figure 2As shown, the flue gas conveying pipeline 170 includes a first conveying pipe section 171, a second conveying pipe section 172, a third conveying pipe section 173, a fourth conveying pipe section 174, and a condensate pipe 175. The first conveying pipe section 171 is communicated with the first flue gas outlet. The second conveying pipe section 172 is vertically arranged and made of a heat-conducting material such as stainless steel, and its top is communicated with one end of the first conveying pipe section 171 away from the first flue gas outlet. The third conveying pipe section 173 is communicated with the lower part of the second conveying pipe section 172 and the second flue gas inlet respectively, and is used for guiding the flue gas to flow into the water collection tower 130. The fourth conveying pipe section 174 is inclined, with its higher end communicated with the bottom end of the second conveying pipe section 172 and its lower end communicated with the condensate storage cavity, and is used for guiding the water to flow into the condensate storage cavity. The condensate pipe 175 is wound inside the second conveying pipe section 172, with its liquid inlet communicated with the outlet of the closed cooling tower 143 and its liquid outlet communicated with the condensate storage cavity. In summer, the condensed water from the condensate storage cavity is cooled by the air-cooled island 142 and the closed cooling tower 143 and then flows through the condensate pipe 175 and returns to the condensate storage cavity. When the cooled condensed water flows through the condensate pipe 175, it can exchange heat with the flue gas flowing through the second conveying pipe section 172 to pre-cool the flue gas about to flow into the water collection tower 130, so that the temperature of the flue gas flowing into the water collection tower 130 reaches about 65°C and the humidity is lower than 20%. And the water separated from the flue gas can flow into the condensate storage cavity along the fourth conveying pipe and be utilized. In this way, the water collection efficiency and the water collection amount are further improved.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0032] In the present invention, unless otherwise clearly specified or limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0034] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A carbon black production flue gas desulfurization water collection equipment, characterized in that: include: A desulfurization tower, wherein a first flue gas inlet is formed at the lower part of one side, a first flue gas outlet is formed at the top, a slurry storage chamber is formed at the lower part of the interior, a first spray component is installed at the middle part of the interior, and a first demisting component is installed at the upper part of the interior; the first spray component is connected to the slurry storage chamber through a slurry circulation pump; A water collecting tower, having a second smoke inlet formed at the lower portion of one side, a second smoke outlet formed at the top, a condensate storage chamber formed at the lower portion of the interior, a second spray component installed at the middle portion of the interior, and a second defogger assembly installed at the upper portion of the interior; the second smoke inlet is connected to the first smoke outlet; the second spray component is connected to the condensate storage chamber through a cooling circuit.

2. The carbon black production flue gas desulfurization water collection equipment according to claim 1, characterized in that: The cooling circuit comprises: a condensate circulation pump, the inlet of which is connected to the condensate storage chamber; The air cooling island is connected to the outlet of the condensate circulation pump.

3. The carbon black production flue gas desulfurization water collection equipment according to claim 2, characterized in that: The cooling circuit also includes: The closed cooling tower has an inlet connected to the air cooling island and an outlet connected to the second spraying element.

4. The carbon black production flue gas desulfurization water collection equipment according to claim 3, characterized in that: Also includes: The water outlet filtering pipeline is communicated with the outlet of the closed cooling tower.

5. The carbon black production flue gas desulfurization water collection equipment according to claim 4, characterized in that: The outlet water filtering pipeline comprises: A shallow media filter, the inlet of which is connected to the outlet of the closed cooling tower; a precision filter, the inlet of which is connected to the outlet of the shallow medium filter; An infusion pump has an inlet connected to an outlet of the precision filter.

6. The carbon black production flue gas desulfurization water collection equipment according to any one of claims 1 to 5, characterized in that: The first demisting assembly comprises: The roof type mist eliminator is two-layer, set up top and bottom; The tube bundle type demister is a single layer and is arranged above the two layers of ridge type demisters.

7. The carbon black production flue gas desulfurization water collection equipment according to any one of claims 1 to 5, characterized in that: The second demisting assembly comprises: The flat plate demister is two-layer, set up top and bottom; The wire mesh type demister is a single layer and is arranged below the two layers of flat plate type demisters.

8. The carbon black production flue gas desulfurization water collection equipment according to any one of claims 1 to 5, characterized in that: Also includes: A slurry replenishing pump is communicated with the slurry storage chamber.