WO2020073613A1 - Device and method for flue gas desulfurization and consumption reduction in heat-engine plant - Google Patents

Device and method for flue gas desulfurization and consumption reduction in heat-engine plant Download PDF

Info

Publication number
WO2020073613A1
WO2020073613A1 PCT/CN2019/078658 CN2019078658W WO2020073613A1 WO 2020073613 A1 WO2020073613 A1 WO 2020073613A1 CN 2019078658 W CN2019078658 W CN 2019078658W WO 2020073613 A1 WO2020073613 A1 WO 2020073613A1
Authority
WO
WIPO (PCT)
Prior art keywords
desulfurization
flue gas
slurry
consumption reduction
thermal power
Prior art date
Application number
PCT/CN2019/078658
Other languages
French (fr)
Chinese (zh)
Inventor
李申强
付青梅
李芷冰
李芷蓓
王巍
Original Assignee
李申强
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201811169387.8A external-priority patent/CN109157968A/en
Priority claimed from CN201811485057.XA external-priority patent/CN109631071A/en
Application filed by 李申强 filed Critical 李申强
Publication of WO2020073613A1 publication Critical patent/WO2020073613A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/08—Arrangements of devices for treating smoke or fumes of heaters

Definitions

  • the invention relates to the field of industrial waste gas environmental protection in thermal power plants, in particular to a device and method for flue gas desulfurization and consumption reduction in thermal power plants.
  • the present invention provides a device for flue gas desulfurization and consumption reduction in thermal power plants.
  • the device includes: demister, cooling spray layer, slurry spray layer, desulfurization tower, clean flue, desulfurization Circulation pump, slurry heat exchanger (cooler), cooling slurry circulation pump; after the flue gas enters the desulfurization tower, it passes through the slurry spray layer, cooling spray layer, and demister in sequence, enters the clean flue, and is discharged into the chimney;
  • the outlet of the slurry heat exchanger (cooler) is connected to the cooling spray layer, one inlet is connected to the cooling liquid return pipe of the desulfurization tower; the outlet of the desulfurization circulating pump is connected to the slurry spray layer, and the inlet is connected to the slurry return pipe of the desulfurization tower ; It is characterized by: it also includes: flow control pump, calcium hydroxide slurry pool, the input end of the flow control pump is connected to the calcium hydro
  • the slurry spray layer is five layers, and there are five corresponding desulfurization circulation pumps, and each layer of the slurry spray layer corresponds to one desulfurization circulation pump of the desulfurization circulation pump.
  • the output end of the flow control pump is connected to the inlet end of the cooling slurry circulation pump.
  • the output end of the flow control pump is connected to the inlet end of the desulfurization circulation pump corresponding to the highest layer of the slurry spray layer.
  • the calcium hydroxide concentration of the calcium hydroxide slurry pool is controlled to 10-15%.
  • the flow rate of the cooling slurry controlled by the slurry heat exchanger is one fifth of the flow rate of the desulfurization circulating pump, so as to reduce the erosion corrosion of the heat exchanger.
  • the flow control pump controls the flow rate of the calcium hydroxide slurry to 100-400 kg / h.
  • the device for flue gas desulfurization and consumption reduction of a thermal power plant of the present invention further includes a chimney sleeve heater provided on the outer side wall of the chimney, and the sleeve heater is provided with a steam interface for steam and exhaust condensation Water-repellent interface.
  • a plurality of reinforcing plates are provided in the cavity formed by the inner wall of the sleeve heater and the outer wall of the flue.
  • the steam interface is connected to the low-pressure steam extraction steam source of the steam turbine, and the low-pressure steam extraction steam source of the steam turbine is used to heat the sleeve heater, thereby heating the flue sleeved in the sleeve heater, and the flue gas is heated up. , So that the white smoke is completely eliminated; the low-pressure exhausted air after the heat exchange is condensed into condensed water and discharged through the hydrophobic interface.
  • the working pressure of the sleeve heater is ⁇ 0.4 MPa
  • the steam flux of the low-pressure extraction steam source in winter is 10-14 t / h
  • summer is 3-4.2 t / h.
  • the present invention also provides a method for flue gas desulfurization and consumption reduction in thermal power plants, which is characterized in that the method includes the following steps:
  • the flue gas enters the desulfurization tower; the flue gas is desulfurized with limestone slurry for the first time; the secondary desulfurization with calcium hydroxide slurry of a certain concentration; the flue gas is cooled; the flue gas is defogged; Treatment; finally discharge the standard gas.
  • the flue gas is heated by a chimney sleeve heater provided on the outer side wall of the chimney, thereby eliminating white smoke.
  • the advantages of the present invention are: for the traditional desulfurized limestone-gypsum method, since limestone is an insoluble weak acid salt, the reaction speed with sulfur dioxide is slow, and the power consumption of the desulfurization circulating pump is large and the cost is high.
  • a certain concentration of calcium hydroxide solution is used for secondary desulfurization, and under different flow control of different calcium hydroxide solutions, it replaces 1 ⁇ 2 desulfurization circulating pumps, so as to achieve the purpose of desulfurization and energy saving;
  • the sleeve heater on the outer wall of the duct leads into the low-pressure steam extraction steam source of the steam turbine to make the flue gas warm up to completely eliminate the white smoke.
  • FIG. 1 is a schematic structural view of the device of the present invention.
  • the invention provides a device for desulfurization and consumption reduction of flue gas in a thermal power plant, which includes: a demister 1, a cooling spray layer 2, a slurry spray layer 3, a desulfurization tower 4, a clean flue 5, a desulfurization circulating pump 6, and a slurry heat exchange (Cooler) 7, cooling slurry circulation pump 8, flow control pump 9, calcium hydroxide slurry pool 10;
  • the outlet of the slurry heat exchanger (cooler) 7 is connected to the cooling spray layer 2, an inlet is connected to the cooling liquid return pipe of the desulfurization tower 4; the outlet of the desulfurization circulation pump 6 is connected to the slurry spray layer 3, and the inlet is connected to the desulfurization tower
  • the slurry return pipe of 4 is connected; the input end of the flow control pump 9 is connected to the calcium hydroxide slurry tank 10, which is used to transport out the calcium hydroxide slurry of the calcium hydroxide slurry pool 10, and can perform flow control.
  • the slurry spray layer 3 is five layers, and the corresponding desulfurization circulation pump 6 is five. Each layer of the slurry spray layer 3 corresponds to one desulfurization circulation pump 6. Only one layer is marked in the figure, indicating that it corresponds one to one. relationship.
  • the order of the slurry spray layer 3, the cooling spray layer 2, and the demister 1 in the desulfurization tower 4 is in order from bottom to top.
  • a chimney sleeve heater 11 is provided on the outer wall of the chimney, and a chimney sleeve heater 11 is provided with a steam interface for steam and a hydrophobic interface for discharging condensed water .
  • the height of the sleeve heater 11 is 10 m, and it is made of 5mm thick Q235 steel plate.
  • the distance between the outer wall of the sleeve heater 11 and the outer wall of the chimney is 100 mm.
  • the inner wall of the sleeve heater 11 and the outer wall of the chimney are each Reinforcement plates are installed at intervals of about 1m.
  • the rated pressure of the sleeve heater 11 is 0.4 MPa, and the upper part of the outer wall of the sleeve heater 11 is provided with four steam ports with a size of DN100 for entering steam and two hydrophobic ports with a size of DN50 for discharging condensate.
  • the outer wall of the sleeve heater 11 is provided with a non-condensable steam discharge port with a size of DN10 and four safety valves of DN100 and PN0.2 to ensure that the working pressure of the sleeve heater 11 does not exceed 0.3 MPa.
  • the specific working process is: after the flue gas enters the desulfurization tower 4, it passes through the slurry spray layer 3, the cooling spray layer 2, and the demister 1, and then enters the clean flue 5 and is discharged into the chimney sleeve heater 11 for heating , So as to eliminate white smoke, and the smoke reaches the emission standard.
  • the flow control pump 9 controls the flow of calcium hydroxide slurry between 100 ⁇ 400 kg / h.
  • the flow control is between 100 ⁇ 200 kg / h, it can achieve the effect of replacing a desulfurization circulating pump; when the flow control In 300 ⁇ 400 Between kg / h, adding calcium hydroxide slurry to the upper two layers of spraying can achieve the effect of replacing the two bottom desulfurization circulating pumps.
  • Embodiment 1 The output end of the flow control pump 9 is connected to the inlet end of the cooling slurry circulation pump 8.
  • the flue gas enters the desulfurization tower 4 from the flue, and the sulfur dioxide in the flue gas reacts with the slurry spray layer 3 in counter-current contact.
  • the sulfur dioxide concentration in the flue gas decreases and the flue gas temperature decreases.
  • the flue gas passes through the heat exchange with the cooling spray layer 2 added with calcium hydroxide slurry and is desulfurized again with the calcium hydroxide solution.
  • the flue gas temperature decreases and the sulfur dioxide concentration decreases.
  • the flue gas passes through the demister 1 and enters the clean flue 5. Heating in the chimney sleeve heater 11, so as to eliminate white smoke and reach the emission standard.
  • Embodiment 2 The output end of the flow control pump 9 is connected to the inlet end of the desulfurization circulation pump 6 corresponding to the highest layer of the slurry spray layer 3.
  • the flue gas enters the desulfurization tower 4 from the flue, the sulfur dioxide in the flue gas reacts with the non-highest layer of the slurry spray layer 3 in countercurrent contact, the flue gas moves up to the uppermost layer, and the uppermost layer of the slurry spray layer 3 is sprayed with calcium hydroxide slurry Desulfurization reaction with sulfur dioxide in the flue gas again, the flue gas continues to pass through the demister 1, enter the clean flue 5, and is heated in the chimney sleeve heater 11, thereby eliminating white smoke, and the flue gas reaches the emission standard.
  • the invention also includes a method for desulfurization and consumption reduction of flue gas in a thermal power plant.
  • the method includes the following steps:
  • the flue gas enters the desulfurization tower 4; the flue gas is desulfurized with limestone slurry for the first time; the secondary desulfurization with calcium hydroxide slurry of a certain concentration; the flue gas is cooled; the mist is defogged; the flue gas is The chimney sleeve heater 11 is heat-treated to eliminate white smoke; and finally discharges up-to-standard gas.
  • the data of the invention is designed and calculated according to the parameters of the 1000 MW unit.
  • Embodiment 1 the sulfur dioxide in the flue gas reacts with the three-layer (three-use and two-preparation) limestone slurry spray layer counter-current contact reaction, the sulfur dioxide concentration in the flue gas decreases from 2000 mg / m 3 to 50 mg / m 3 , and the flue gas temperature decreases To 49.25 ° C. Then, the flue gas undergoes heat exchange and desulfurization through contact with the cooling spray layer (flow rate 2500 m 3 / h) added with calcium hydroxide slurry, the flue gas temperature drops below 45 °C, and the concentration of sulfur dioxide is below 10 mg / m 3 . After passing through the demister and flue gas heater, it enters the chimney to eliminate the emission of white smoke.
  • the cooling spray layer flow rate 2500 m 3 / h
  • the flue gas enters the desulfurization tower from the flue, and the sulfur dioxide in the flue gas reacts with the three-layer (three-use and two-preparation) limestone slurry spray layer in countercurrent contact reaction, in which the uppermost slurry is added with calcium hydroxide slurry and the uppermost spray layer
  • the concentration of calcium hydroxide is 0.2 mmol / L
  • the concentration of sulfur dioxide in the flue gas is reduced from 2000 mg / m 3 to 15 mg / m 3.
  • the flue gas passes through the demister and enters the chimney sleeve heater for heating, thereby eliminating white smoke. Emission Standards.
  • a desulfurization circulating pump has a flow rate of 12,500 m 3 / h, and a cooling slurry flow of 2500 m 3 / h.
  • the reaction rate of calcium is an order of magnitude faster.
  • the cooling slurry circulating pump power is 350 kw, replacing a desulfurization circulating pump power of 1400 kw, and reducing the desulfurization load by 1050 kw. It can reduce the power consumption of the entire desulfurization system by 20-25%, and the operating cost of the desulfurization system by 10%.
  • the invention discloses a device for desulfurization and consumption reduction of flue gas in a thermal power plant.
  • the device includes a demister, a cooling spray layer, a slurry spray layer, a desulfurization tower, a clean flue, a desulfurization circulation pump, and a slurry heat exchanger (cooler ), Cooling slurry circulation pump, flow control pump, calcium hydroxide slurry pool.
  • the invention adopts a certain concentration of calcium hydroxide solution for secondary desulfurization, and replaces 1 ⁇ 2 desulfurization circulating pumps under different flow control of different calcium hydroxide solutions under different flow control, thereby achieving the purpose of desulfurization and energy saving;
  • the sleeve heater provided on the outer wall of the flue leads into the low-pressure steam extraction source of the steam turbine to make the flue gas warm up to achieve the effect of completely eliminating white smoke.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treating Waste Gases (AREA)

Abstract

Disclosed are a device and method for flue gas desulfurization and consumption reduction in a heat-engine plant. The device comprises: a demister (1), a cooling spray layer (2), a seriflux spray layer (3), a desulfurizing tower (4), a flue gas purifying passage (5), a desulfurization circulating pump (6), a seriflux heat exchanger (7), a cooled seriflux circulating pump (8), a flow rate control pump (9) and a calcium hydroxide seriflux pond (10). The method comprises the following steps: flue gas enters a desulfurizing tower (4) for primary desulfurization by limestone seriflux; flue gas undergoes secondary desulfurization by calcium hydroxide seriflux; flue gas undergoes cooling, demisting and heating; and, standard gas is discharged.

Description

一种用于火电厂烟气脱硫降耗的装置及方法Device and method for flue gas desulfurization and consumption reduction of thermal power plant 技术领域Technical field
本发明涉及火力发电厂工业废气环保领域，尤其涉及一种火电厂烟气脱硫降耗的装置及方法。The invention relates to the field of industrial waste gas environmental protection in thermal power plants, in particular to a device and method for flue gas desulfurization and consumption reduction in thermal power plants.
背景技术Background technique
根据国家大气污染防治规划，部分省市环保政策要求火力发电厂进行脱硫处理。目前对于大型火力发电厂烟气脱硫80%以上采用石灰石-石膏法，具体脱硫工艺流程：烟气自烟道进入脱硫塔，烟气中二氧化硫与四层（四用一备）石灰石浆液喷淋层逆流接触反应，烟气中二氧化硫浓度由2000 mg/m 3下降至15 mg/m 3，烟气温度下降至49.25℃，烟气经过除雾器、烟气加热器，进入烟囱排放。石灰石即CaCO 3是一种难溶弱酸性盐，与二氧化硫的反应速度慢，且耗电量大，成本高。 According to the national air pollution prevention and control plan, environmental protection policies in some provinces and cities require thermal power plants to perform desulfurization treatment. At present, the limestone-gypsum method is adopted for the desulfurization of flue gas in large-scale thermal power plants by more than 80%. The specific desulfurization process flow: flue gas enters the desulfurization tower from the flue, sulfur dioxide in the flue gas and four layers (four uses and one preparation) limestone slurry spray In the countercurrent contact reaction, the concentration of sulfur dioxide in the flue gas decreased from 2000 mg / m 3 to 15 mg / m 3 , the flue gas temperature dropped to 49.25 ° C, and the flue gas passed through the demister and flue gas heater and entered the chimney for discharge. Limestone, CaCO 3, is an insoluble weakly acidic salt, which reacts slowly with sulfur dioxide, consumes a large amount of electricity, and has a high cost.
由于脱硫后的烟气还要进行冷却除白烟操作，如在申请公布号CN108421342中就设有用于通过冷却水对烟气进行降温的喷淋降温。Because the flue gas after desulfurization also needs to be cooled and white smoke is removed, for example, in the application publication number CN108421342, there is a spray cooling for cooling the flue gas by cooling water.
技术问题technical problem
有鉴于此，有必要提供一种脱硫速度快、省电节能的脱硫降耗方法及装置。In view of this, it is necessary to provide a desulfurization and consumption reduction method and device with fast desulfurization speed, power saving and energy saving.
本发明为解决上述技术问题，提供了一种用于火电厂烟气脱硫降耗的装置，该装置包括：除雾器、冷却喷淋层、浆液喷淋层、脱硫塔、净烟道、脱硫循环泵、浆液换热器（冷却器）、冷却浆液循环泵；烟气进入脱硫塔后，依次经过浆液喷淋层、冷却喷淋层、除雾器后，进入净烟道，排入烟囱；浆液换热器（冷却器）的出口与冷却喷淋层相连，一个入口与脱硫塔的冷却液回流管相连；脱硫循环泵的出口与浆液喷淋层相连，入口与脱硫塔的浆液回流管相连；其特征在于：还包括：流量控制泵、氢氧化钙浆液池，流量控制泵输入端连接氢氧化钙浆液池，用于将氢氧化钙浆液池的氢氧化钙浆液输送出去，并能进行流量控制。In order to solve the above technical problems, the present invention provides a device for flue gas desulfurization and consumption reduction in thermal power plants. The device includes: demister, cooling spray layer, slurry spray layer, desulfurization tower, clean flue, desulfurization Circulation pump, slurry heat exchanger (cooler), cooling slurry circulation pump; after the flue gas enters the desulfurization tower, it passes through the slurry spray layer, cooling spray layer, and demister in sequence, enters the clean flue, and is discharged into the chimney; The outlet of the slurry heat exchanger (cooler) is connected to the cooling spray layer, one inlet is connected to the cooling liquid return pipe of the desulfurization tower; the outlet of the desulfurization circulating pump is connected to the slurry spray layer, and the inlet is connected to the slurry return pipe of the desulfurization tower ; It is characterized by: it also includes: flow control pump, calcium hydroxide slurry pool, the input end of the flow control pump is connected to the calcium hydroxide slurry pool, which is used to transport out the calcium hydroxide slurry of the calcium hydroxide slurry pool, and can carry out flow control.
优选地，所述浆液喷淋层为五层，对应的脱硫循环泵为五台，浆液喷淋层的每一层对应脱硫循环泵的一台脱硫循环泵。Preferably, the slurry spray layer is five layers, and there are five corresponding desulfurization circulation pumps, and each layer of the slurry spray layer corresponds to one desulfurization circulation pump of the desulfurization circulation pump.
优选地，所述流量控制泵的输出端连接冷却浆液循环泵的入口端。Preferably, the output end of the flow control pump is connected to the inlet end of the cooling slurry circulation pump.
优选地，所述流量控制泵的输出端连接浆液喷淋层的最高层对应的脱硫循环泵的入口端。Preferably, the output end of the flow control pump is connected to the inlet end of the desulfurization circulation pump corresponding to the highest layer of the slurry spray layer.
优选地，所述氢氧化钙浆液池的氢氧化钙浓度控制为10~15%。Preferably, the calcium hydroxide concentration of the calcium hydroxide slurry pool is controlled to 10-15%.
优选地，所述浆液换热器（冷却器）控制冷却浆液流量是脱硫循环泵流量的五分之一，以减小换热器冲刷腐蚀。Preferably, the flow rate of the cooling slurry controlled by the slurry heat exchanger (cooler) is one fifth of the flow rate of the desulfurization circulating pump, so as to reduce the erosion corrosion of the heat exchanger.
优选地，所述流量控制泵控制氢氧化钙浆液流量在100~400 kg/h。Preferably, the flow control pump controls the flow rate of the calcium hydroxide slurry to 100-400 kg / h.
优选地，本发明的火电厂烟气脱硫降耗的装置还包括设在所述烟囱外侧壁上的烟囱套筒加热器，所述套筒加热器上设有通入蒸汽的蒸汽接口和排放冷凝水的疏水接口。Preferably, the device for flue gas desulfurization and consumption reduction of a thermal power plant of the present invention further includes a chimney sleeve heater provided on the outer side wall of the chimney, and the sleeve heater is provided with a steam interface for steam and exhaust condensation Water-repellent interface.
优选地，所述套筒加热器内壁与烟道外壁形成的腔体内设有多个加固板。Preferably, a plurality of reinforcing plates are provided in the cavity formed by the inner wall of the sleeve heater and the outer wall of the flue.
优选地，所述蒸汽接口连接汽轮机的低压抽汽汽源，使用汽轮机的低压抽汽汽源对套筒加热器进行加热，进而给套设在套筒加热器内的烟道加热，烟气升温，致使白烟完全消除；换热完的低压抽气凝结成冷凝水通过疏水接口排放。Preferably, the steam interface is connected to the low-pressure steam extraction steam source of the steam turbine, and the low-pressure steam extraction steam source of the steam turbine is used to heat the sleeve heater, thereby heating the flue sleeved in the sleeve heater, and the flue gas is heated up. , So that the white smoke is completely eliminated; the low-pressure exhausted air after the heat exchange is condensed into condensed water and discharged through the hydrophobic interface.
优选地，所述套筒加热器的工作压力≤0.4 MPa，冬季低压抽汽汽源的蒸汽通量为10-14 t/h，夏季为3-4.2 t/h。Preferably, the working pressure of the sleeve heater is ≤0.4 MPa, and the steam flux of the low-pressure extraction steam source in winter is 10-14 t / h, summer is 3-4.2 t / h.
技术解决方案Technical solution
本发明为解决上述技术问题，本发明还提供了一种用于火电厂烟气脱硫降耗的方法，其特征在于，该方法包括如下步骤：In order to solve the above technical problems, the present invention also provides a method for flue gas desulfurization and consumption reduction in thermal power plants, which is characterized in that the method includes the following steps:
烟气进入脱硫塔；用石灰石浆液对烟气进行首次脱硫处理；用一定浓度的氢氧化钙浆液进行二次脱硫处理；对烟气进行降温处理；对烟气进行除雾处理；对烟气加热处理；最后排出达标气体。The flue gas enters the desulfurization tower; the flue gas is desulfurized with limestone slurry for the first time; the secondary desulfurization with calcium hydroxide slurry of a certain concentration; the flue gas is cooled; the flue gas is defogged; Treatment; finally discharge the standard gas.
优选地，通过设置在烟囱外侧壁上的烟囱套筒加热器对烟气进行加热，从而消除白烟。Preferably, the flue gas is heated by a chimney sleeve heater provided on the outer side wall of the chimney, thereby eliminating white smoke.
有益效果Beneficial effect
本发明的优点在于：针对传统的脱硫石灰石-石膏法，由于石灰石是一种难溶弱酸性盐，与二氧化硫的反应速度慢，且脱硫循环泵耗电量大，成本高。采用一定浓度的氢氧化钙溶液进行二次脱硫，且在不同氢氧化钙溶液在不同流量控制下，替代1~2台脱硫循环泵工作，从而起到脱硫节能的目的；同时通过套设在烟道外侧壁上的套筒加热器通入汽轮机的低压抽汽汽源使烟气升温达到完全消白烟的效果。The advantages of the present invention are: for the traditional desulfurized limestone-gypsum method, since limestone is an insoluble weak acid salt, the reaction speed with sulfur dioxide is slow, and the power consumption of the desulfurization circulating pump is large and the cost is high. A certain concentration of calcium hydroxide solution is used for secondary desulfurization, and under different flow control of different calcium hydroxide solutions, it replaces 1 ~ 2 desulfurization circulating pumps, so as to achieve the purpose of desulfurization and energy saving; The sleeve heater on the outer wall of the duct leads into the low-pressure steam extraction steam source of the steam turbine to make the flue gas warm up to completely eliminate the white smoke.
附图说明BRIEF DESCRIPTION
图1为本发明装置结构示意图。FIG. 1 is a schematic structural view of the device of the present invention.
图中标识：1、除雾器（三层）  2、冷却喷淋层   3、浆液喷淋层（五层）  4、脱硫塔（吸收塔） 5、净烟道  6、脱硫循环泵（五台） 7、浆液换热器（冷却器） 8、冷却浆液循环泵  9、流量控制泵  10、氢氧化钙浆液池 11、烟囱套筒加热器Logos in the picture: 1. Mist eliminator (three layers) 2. Cooling spray layer 3. Slurry spray layer (five layers) 4. Desulfurization tower (absorption tower) 5. Net flue 6. Desulfurization circulating pump (five sets) 7. Slurry heat exchanger (cooler) 8. Cooling slurry circulating pump 9. Flow control pump 10. Calcium hydroxide slurry pool 11. Chimney sleeve heater
本发明的最佳实施方式Best Mode of the Invention
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图1所示的示意图，对本发明进行进一步的详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail in conjunction with the schematic diagram shown in FIG. 1 below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
本发明一种火电厂烟气脱硫降耗的装置，包括：除雾器1、冷却喷淋层2、浆液喷淋层3、脱硫塔4、净烟道5、脱硫循环泵6、浆液换热器（冷却器）7、冷却浆液循环泵8、流量控制泵9、氢氧化钙浆液池10；The invention provides a device for desulfurization and consumption reduction of flue gas in a thermal power plant, which includes: a demister 1, a cooling spray layer 2, a slurry spray layer 3, a desulfurization tower 4, a clean flue 5, a desulfurization circulating pump 6, and a slurry heat exchange (Cooler) 7, cooling slurry circulation pump 8, flow control pump 9, calcium hydroxide slurry pool 10;
浆液换热器（冷却器）7的出口与冷却喷淋层2相连，一个入口与脱硫塔4的冷却液回流管相连；脱硫循环泵6的出口与浆液喷淋层3相连，入口与脱硫塔4的浆液回流管相连；流量控制泵9输入端连接氢氧化钙浆液池10，用于将氢氧化钙浆液池10的氢氧化钙浆液输送出去，并能进行流量控制。浆液喷淋层3为五层，对应的脱硫循环泵6为五台，每一层的浆液喷淋层3均对应一台脱硫循环泵6，图中只标示出一层，表示其一一对应关系。The outlet of the slurry heat exchanger (cooler) 7 is connected to the cooling spray layer 2, an inlet is connected to the cooling liquid return pipe of the desulfurization tower 4; the outlet of the desulfurization circulation pump 6 is connected to the slurry spray layer 3, and the inlet is connected to the desulfurization tower The slurry return pipe of 4 is connected; the input end of the flow control pump 9 is connected to the calcium hydroxide slurry tank 10, which is used to transport out the calcium hydroxide slurry of the calcium hydroxide slurry pool 10, and can perform flow control. The slurry spray layer 3 is five layers, and the corresponding desulfurization circulation pump 6 is five. Each layer of the slurry spray layer 3 corresponds to one desulfurization circulation pump 6. Only one layer is marked in the figure, indicating that it corresponds one to one. relationship.
在脱硫塔4中浆液喷淋层3、冷却喷淋层2、除雾器1的顺序是，从下往上依次排开。The order of the slurry spray layer 3, the cooling spray layer 2, and the demister 1 in the desulfurization tower 4 is in order from bottom to top.
为了在脱硫降耗的同时，消除烟气白烟，在烟囱外侧壁上设置有烟囱套筒加热器11，烟囱套筒加热器11上设有通入蒸汽的蒸汽接口和排放冷凝水的疏水接口。套筒加热器11高度为10 m，使用5mm厚的Q235 钢板制作而成，套筒加热器11外壁与烟囱外壁之间间距为100 mm，套筒加热器11内壁与烟囱外壁形成的腔体内每间隔1m左右设置加固板。 In order to eliminate flue gas and white smoke while desulfurization and consumption reduction, a chimney sleeve heater 11 is provided on the outer wall of the chimney, and a chimney sleeve heater 11 is provided with a steam interface for steam and a hydrophobic interface for discharging condensed water . The height of the sleeve heater 11 is 10 m, and it is made of 5mm thick Q235 steel plate. The distance between the outer wall of the sleeve heater 11 and the outer wall of the chimney is 100 mm. The inner wall of the sleeve heater 11 and the outer wall of the chimney are each Reinforcement plates are installed at intervals of about 1m.
所述套筒加热器11的额定压力为0.4 MPa，套筒加热器11外侧壁上部设有4个尺寸为DN100通入蒸汽的蒸汽接口和2个尺寸为DN50排放冷凝水的疏水接口，所述套筒加热器11外侧壁设有1个尺寸为DN10的不凝结蒸汽排放口和4个DN100、PN0.2的安全阀，确保套筒加热器11工作压力不超过0.3 MPa。The rated pressure of the sleeve heater 11 is 0.4 MPa, and the upper part of the outer wall of the sleeve heater 11 is provided with four steam ports with a size of DN100 for entering steam and two hydrophobic ports with a size of DN50 for discharging condensate. The outer wall of the sleeve heater 11 is provided with a non-condensable steam discharge port with a size of DN10 and four safety valves of DN100 and PN0.2 to ensure that the working pressure of the sleeve heater 11 does not exceed 0.3 MPa.
汽轮机低压抽取蒸汽，通过烟囱套筒加热器11的蒸汽接口进入烟囱套筒加热器11，蒸汽凝结释放热量，热量通过烟囱壁传递给烟气，烟气温度升高消除白烟，烟气达标排放，蒸汽凝结形成的冷凝水通过排放冷凝水的疏水接口排出烟囱套筒加热器11。Steam is extracted from the turbine at low pressure and enters the chimney sleeve heater 11 through the steam interface of the chimney sleeve heater 11. The steam condenses and releases heat. The heat is transferred to the flue gas through the chimney wall. The condensate formed by steam condensation exits the chimney sleeve heater 11 through the hydrophobic interface that discharges the condensate.
本发明的实施方式Embodiments of the invention
具体的工作流程是：烟气进入脱硫塔4后，依次经过浆液喷淋层3、冷却喷淋层2、除雾器1后，进入净烟道5，排入烟囱套筒加热器11内加热，从而消除白烟，烟气达到排放标准。The specific working process is: after the flue gas enters the desulfurization tower 4, it passes through the slurry spray layer 3, the cooling spray layer 2, and the demister 1, and then enters the clean flue 5 and is discharged into the chimney sleeve heater 11 for heating , So as to eliminate white smoke, and the smoke reaches the emission standard.
其中流量控制泵9控制氢氧化钙浆液流量在100~400 kg/h之间，当流量控制在100~200 kg/h之间时，可以达到替换一台脱硫循环泵工作的效果；当流量控制在300~400 kg/h之间时，将氢氧化钙浆液加入上部两层喷淋，可以达到替换底部两台脱硫循环泵工作的效果。The flow control pump 9 controls the flow of calcium hydroxide slurry between 100 ~ 400 kg / h. When the flow control is between 100 ~ 200 kg / h, it can achieve the effect of replacing a desulfurization circulating pump; when the flow control In 300 ~ 400 Between kg / h, adding calcium hydroxide slurry to the upper two layers of spraying can achieve the effect of replacing the two bottom desulfurization circulating pumps.
实施方式一：流量控制泵9的输出端连接冷却浆液循环泵8的入口端。烟气自烟道进入脱硫塔4，烟气中二氧化硫与浆液喷淋层3逆流接触反应，烟气中二氧化硫浓度下降，烟气温度下降。然后烟气向上经过与加入氢氧化钙浆液的冷却喷淋层2接触换热并与氢氧化钙溶液再次脱硫，烟气温度下降，二氧化硫浓度下降，烟气经过除雾器1、进入净烟道5，在烟囱套筒加热器11内加热，从而消除白烟达到排放标准。Embodiment 1: The output end of the flow control pump 9 is connected to the inlet end of the cooling slurry circulation pump 8. The flue gas enters the desulfurization tower 4 from the flue, and the sulfur dioxide in the flue gas reacts with the slurry spray layer 3 in counter-current contact. The sulfur dioxide concentration in the flue gas decreases and the flue gas temperature decreases. Then the flue gas passes through the heat exchange with the cooling spray layer 2 added with calcium hydroxide slurry and is desulfurized again with the calcium hydroxide solution. The flue gas temperature decreases and the sulfur dioxide concentration decreases. The flue gas passes through the demister 1 and enters the clean flue 5. Heating in the chimney sleeve heater 11, so as to eliminate white smoke and reach the emission standard.
实施方式二：流量控制泵9的输出端连接对应浆液喷淋层3最高层的脱硫循环泵6的入口端。烟气自烟道进入脱硫塔4，烟气中二氧化硫与浆液喷淋层3的非最高层逆流接触反应，烟气上移到最上层，浆液喷淋层3的最上层喷淋氢氧化钙浆液与烟气中二氧化硫再次进行脱硫反应，烟气继续经过除雾器1、进入净烟道5，在烟囱套筒加热器11内加热，从而消除白烟，烟气达到排放标准。Embodiment 2: The output end of the flow control pump 9 is connected to the inlet end of the desulfurization circulation pump 6 corresponding to the highest layer of the slurry spray layer 3. The flue gas enters the desulfurization tower 4 from the flue, the sulfur dioxide in the flue gas reacts with the non-highest layer of the slurry spray layer 3 in countercurrent contact, the flue gas moves up to the uppermost layer, and the uppermost layer of the slurry spray layer 3 is sprayed with calcium hydroxide slurry Desulfurization reaction with sulfur dioxide in the flue gas again, the flue gas continues to pass through the demister 1, enter the clean flue 5, and is heated in the chimney sleeve heater 11, thereby eliminating white smoke, and the flue gas reaches the emission standard.
本发明还包括：一种火电厂烟气脱硫降耗的方法，该方法包括如下步骤：The invention also includes a method for desulfurization and consumption reduction of flue gas in a thermal power plant. The method includes the following steps:
烟气进入脱硫塔4；用石灰石浆液对烟气进行首次脱硫处理；用一定浓度的氢氧化钙浆液进行二次脱硫处理；对烟气进行降温处理；对烟进行除雾处理；对烟气在烟囱套筒加热器11内加热处理，消除白烟；最后排出达标气体。The flue gas enters the desulfurization tower 4; the flue gas is desulfurized with limestone slurry for the first time; the secondary desulfurization with calcium hydroxide slurry of a certain concentration; the flue gas is cooled; the mist is defogged; the flue gas is The chimney sleeve heater 11 is heat-treated to eliminate white smoke; and finally discharges up-to-standard gas.
本发明数据按1000 MW机组参数进行实验设计计算。The data of the invention is designed and calculated according to the parameters of the 1000 MW unit.
在石灰石制备间一侧设置3×3×3米的氢氧化钙浆液制备池，配制浓度10~15%的Ca(OH) 2浆液，按氢氧化钙185 kg/h（浆液量2 m 3/h）加入脱硫循环泵或冷却浆液循环泵（流量2500 m 3/h）入口（或出口），提高冷却浆液PH值6.5~8，最上层或上部两层浆液氢氧化钙浓度0.1~1 mmol/L。 Set a calcium hydroxide slurry preparation tank of 3 × 3 × 3 meters on the side of the limestone preparation room, prepare a Ca (OH) 2 slurry with a concentration of 10 ~ 15%, according to calcium hydroxide 185 kg / h (slurry amount 2 m 3 / h) Add the inlet (or outlet) of the desulfurization circulation pump or cooling slurry circulation pump (flow rate 2500 m 3 / h) to increase the PH value of the cooling slurry by 6.5 ~ 8, and the calcium hydroxide concentration of the uppermost or upper two layers of slurry is 0.1 ~ 1 mmol / L.
实施方式一实验，烟气中二氧化硫与三层（三用两备）石灰石浆液喷淋层逆流接触反应，烟气中二氧化硫浓度由2000 mg/m 3下降至50 mg/m 3，烟气温度下降至49.25℃。然后烟气经过与加入氢氧化钙浆液的冷却喷淋层（流量2500 m 3/h）接触换热并脱硫，烟气温度下降到45℃以下，二氧化硫浓度至10 mg/m 3以下，烟气经过除雾器、烟气加热器，进入烟囱消除白烟达标排放。 Embodiment 1 Experiment, the sulfur dioxide in the flue gas reacts with the three-layer (three-use and two-preparation) limestone slurry spray layer counter-current contact reaction, the sulfur dioxide concentration in the flue gas decreases from 2000 mg / m 3 to 50 mg / m 3 , and the flue gas temperature decreases To 49.25 ° C. Then, the flue gas undergoes heat exchange and desulfurization through contact with the cooling spray layer (flow rate 2500 m 3 / h) added with calcium hydroxide slurry, the flue gas temperature drops below 45 ℃, and the concentration of sulfur dioxide is below 10 mg / m 3 . After passing through the demister and flue gas heater, it enters the chimney to eliminate the emission of white smoke.
实施方式二实验，烟气自烟道进入脱硫塔，烟气中二氧化硫与三层（三用两备）石灰石浆液喷淋层逆流接触反应，其中最上层浆液加入氢氧化钙浆液，最上喷淋层氢氧化钙浓度0.2 mmol/L，烟气中二氧化硫浓度由2000 mg/m 3下降至15 mg/m 3，烟气经过除雾器、进入烟囱套筒加热器内加热，从而消除白烟，达到排放标准。 Embodiment 2 Experiment, the flue gas enters the desulfurization tower from the flue, and the sulfur dioxide in the flue gas reacts with the three-layer (three-use and two-preparation) limestone slurry spray layer in countercurrent contact reaction, in which the uppermost slurry is added with calcium hydroxide slurry and the uppermost spray layer The concentration of calcium hydroxide is 0.2 mmol / L, and the concentration of sulfur dioxide in the flue gas is reduced from 2000 mg / m 3 to 15 mg / m 3. The flue gas passes through the demister and enters the chimney sleeve heater for heating, thereby eliminating white smoke. Emission Standards.
耗能计算，一台脱硫循环泵流量12500 m 3/h运行，冷却浆液流量2500 m 3/h加入氢氧化钙浆液后脱硫效率提高，与烟气中二氧化硫产生酸碱反应瞬间完成，比与碳酸钙的反应速度快一个数量级。冷却浆液循环泵功率350 kw，代替一台脱硫循环泵功率1400 kw，降低脱硫负荷1050 kw。可使整个脱硫系统电耗降低20~25%，脱硫系统运行费用降低10%。 According to energy consumption calculation, a desulfurization circulating pump has a flow rate of 12,500 m 3 / h, and a cooling slurry flow of 2500 m 3 / h. After adding calcium hydroxide slurry, the desulfurization efficiency is improved, and the acid-base reaction with sulfur dioxide in the flue gas is completed instantly, compared with carbonic acid. The reaction rate of calcium is an order of magnitude faster. The cooling slurry circulating pump power is 350 kw, replacing a desulfurization circulating pump power of 1400 kw, and reducing the desulfurization load by 1050 kw. It can reduce the power consumption of the entire desulfurization system by 20-25%, and the operating cost of the desulfurization system by 10%.
以上所述，仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明技术方案的范围内。The above is only the preferred embodiments of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed in the preferred embodiments as above, it is not intended to limit the present invention. Anyone familiar with the profession Technical personnel, without departing from the scope of the technical solution of the present invention, when the technical contents disclosed above can be used to make some changes or modifications to equivalent embodiments of equivalent changes, but those who do not deviate from the technical solution of the present invention, according to the present invention Technical essence Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the present invention.
工业实用性Industrial applicability
本发明公开了一种火电厂烟气脱硫降耗的装置，置包括除雾器、冷却喷淋层、浆液喷淋层、脱硫塔、净烟道、脱硫循环泵、浆液换热器（冷却器）、冷却浆液循环泵、流量控制泵、氢氧化钙浆液池。本发明通过采用一定浓度的氢氧化钙溶液进行二次脱硫，且在不同氢氧化钙溶液在不同流量控制下，替代1~2台脱硫循环泵工作，从而起到脱硫节能的目的；同时通过套设在烟道外侧壁上的套筒加热器通入汽轮机的低压抽汽汽源使烟气升温达到完全消白烟的效果。The invention discloses a device for desulfurization and consumption reduction of flue gas in a thermal power plant. The device includes a demister, a cooling spray layer, a slurry spray layer, a desulfurization tower, a clean flue, a desulfurization circulation pump, and a slurry heat exchanger (cooler ), Cooling slurry circulation pump, flow control pump, calcium hydroxide slurry pool. The invention adopts a certain concentration of calcium hydroxide solution for secondary desulfurization, and replaces 1 ~ 2 desulfurization circulating pumps under different flow control of different calcium hydroxide solutions under different flow control, thereby achieving the purpose of desulfurization and energy saving; The sleeve heater provided on the outer wall of the flue leads into the low-pressure steam extraction source of the steam turbine to make the flue gas warm up to achieve the effect of completely eliminating white smoke.

Claims (10)

  1.  一种火电厂烟气脱硫降耗的装置，该装置包括：除雾器（1）、冷却喷淋层（2）、浆液喷淋层（3）、脱硫塔（4）、净烟道（5）、脱硫循环泵（6）、浆液换热器（冷却器）（7）、冷却浆液循环泵（8）；烟气进入脱硫塔（4）后，依次经过浆液喷淋层（3）、冷却喷淋层（2）、除雾器（1）后，进入净烟道（5），排入烟囱；浆液换热器（冷却器）（7）的出口与冷却喷淋层（2）相连，一个入口与脱硫塔（4）的冷却液回流管相连；脱硫循环泵（6）的出口与浆液喷淋层（3）相连，入口与脱硫塔（4）的浆液回流管相连；其特征在于，还包括流量控制泵（9）、氢氧化钙浆液池（10），流量控制泵（9）输入端连接氢氧化钙浆液池（10），用于将氢氧化钙浆液池（10）的氢氧化钙浆液输送出去，并能进行流量控制。A device for flue gas desulfurization and consumption reduction in a thermal power plant, the device includes: a demister (1), a cooling spray layer (2), a slurry spray layer (3), a desulfurization tower (4), and a clean flue (5 ), Desulfurization circulation pump (6), slurry heat exchanger (cooler) (7), cooling slurry circulation pump (8); after the flue gas enters the desulfurization tower (4), it passes through the slurry spray layer (3), cooling After the spray layer (2) and the demister (1), it enters the clean flue (5) and is discharged into the chimney; the outlet of the slurry heat exchanger (cooler) (7) is connected to the cooling spray layer (2), One inlet is connected to the coolant return pipe of the desulfurization tower (4); the outlet of the desulfurization circulation pump (6) is connected to the slurry spray layer (3), and the inlet is connected to the slurry return pipe of the desulfurization tower (4); It also includes a flow control pump (9), a calcium hydroxide slurry tank (10), and an input end of the flow control pump (9) is connected to a calcium hydroxide slurry tank (10), which is used to oxidize the calcium hydroxide slurry tank (10). Calcium slurry is transported out, and flow control can be performed.
  2. 如权利要求1所述的一种火电厂烟气脱硫降耗的装置，其特征在于：所述浆液喷淋层（3）为五层，对应的脱硫循环泵（6）为五台，浆液喷淋层（3）的每一层对应脱硫循环泵（6）的一台脱硫循环泵。The device for flue gas desulfurization and consumption reduction of a thermal power plant according to claim 1, wherein the slurry spray layer (3) is five layers, and the corresponding desulfurization circulating pump (6) is five, and the slurry spray Each layer of the shower layer (3) corresponds to a desulfurization circulating pump of the desulfurization circulating pump (6).
  3. 如权利要求1所述的一种火电厂烟气脱硫降耗的装置，其特征在于：所述流量控制泵（9）的输出端连接冷却浆液循环泵（8）的入口端。The device for flue gas desulfurization and consumption reduction of a thermal power plant according to claim 1, wherein the output end of the flow control pump (9) is connected to the inlet end of the cooling slurry circulation pump (8).
  4. 如权利要求1所述的一种火电厂烟气脱硫降耗的装置，其特征在于：所述流量控制泵（9）的输出端连接浆液喷淋层（3）的最高层对应的脱硫循环泵（6）的入口端。The device for flue gas desulfurization and consumption reduction of a thermal power plant according to claim 1, characterized in that the output end of the flow control pump (9) is connected to a desulfurization circulating pump corresponding to the highest layer of the slurry spray layer (3) (6) The entrance end.
  5. 如权利要求1所述的一种火电厂烟气脱硫降耗的装置，其特征在于：所述氢氧化钙浆液池（10）的氢氧化钙浓度控制为10~15%。The device for flue gas desulfurization and consumption reduction of a thermal power plant according to claim 1, characterized in that the calcium hydroxide concentration of the calcium hydroxide slurry tank (10) is controlled to 10-15%.
  6. 如权利要求1或3所述的一种火电厂烟气脱硫降耗的装置，其特征在于：所述浆液换热器（冷却器）（7）控制冷却浆液流量是脱硫循环泵（6）流量的五分之一，以减少浆液换热器的冲刷腐蚀。A device for flue gas desulfurization and consumption reduction in a thermal power plant according to claim 1 or 3, characterized in that: the slurry heat exchanger (cooler) (7) controls the flow rate of the cooling slurry is the flow rate of the desulfurization circulating pump (6) One-fifth to reduce the erosion corrosion of the slurry heat exchanger.
  7. 如权利要求1所述的一种火电厂烟气脱硫降耗的装置，其特征在于：所述流量控制泵（9）控制氢氧化钙浆液流量在100~400 kg/h。The device for flue gas desulfurization and consumption reduction of a thermal power plant according to claim 1, characterized in that the flow control pump (9) controls the flow of calcium hydroxide slurry at 100 ~ 400 kg / h.
  8. 如权利要求1所述的一种火电厂烟气脱硫降耗的装置，其特征在于还包括设在所述烟囱外侧壁上的烟囱套筒加热器(11)，所述套筒加热器(11)上设有通入蒸汽的蒸汽接口和排放冷凝水的疏水接口。The device for flue gas desulfurization and consumption reduction of a thermal power plant according to claim 1, further comprising a chimney sleeve heater (11) provided on the outer side wall of the chimney, the sleeve heater (11) ) There is a steam connection for steam and a hydrophobic connection for draining condensate.
  9. 一种火电厂烟气脱硫降耗的方法，其特征在于，该方法包括如下步骤：A method for flue gas desulfurization and consumption reduction in a thermal power plant is characterized in that the method includes the following steps:
    烟气进入脱硫塔；用石灰石浆液对烟气进行首次脱硫处理；用一定浓度的氢氧化钙浆液进行二次脱硫处理；对烟气进行降温处理；对烟进行除雾处理；对烟气加热处理；最后排出达标气体。The flue gas enters the desulfurization tower; the flue gas is desulfurized for the first time with limestone slurry; the calcium sulfate slurry with a certain concentration is used for secondary desulfurization; the flue gas is cooled; the smoke is demisted; the flue gas is heated ; Finally, discharge the standard gas.
  10. 如权利要求8所述的火电厂烟气脱硫降耗的方法，其特征在于，所述加热通过设置在烟囱外侧壁上的烟囱套筒加热器(11)进行，从而消除白烟。The method of flue gas desulfurization and consumption reduction of a thermal power plant according to claim 8, characterized in that the heating is performed by a chimney sleeve heater (11) provided on the outer side wall of the chimney, thereby eliminating white smoke.
PCT/CN2019/078658 2018-10-08 2019-03-19 Device and method for flue gas desulfurization and consumption reduction in heat-engine plant WO2020073613A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201811169387.8 2018-10-08
CN201811169387.8A CN109157968A (en) 2018-10-08 2018-10-08 A kind of device and method for flue gas desulphurization consumption reduction
CN201811485057.X 2018-12-06
CN201811485057.XA CN109631071A (en) 2018-12-06 2018-12-06 A method of eliminating white smoke device and heating eliminating white smoke are heated for coal steam-electric plant smoke

Publications (1)

Publication Number Publication Date
WO2020073613A1 true WO2020073613A1 (en) 2020-04-16

Family

ID=70164380

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/078658 WO2020073613A1 (en) 2018-10-08 2019-03-19 Device and method for flue gas desulfurization and consumption reduction in heat-engine plant

Country Status (1)

Country Link
WO (1) WO2020073613A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103599690A (en) * 2013-11-12 2014-02-26 山东中实易通集团有限公司 Composite limestone/calcium hydroxide gypsum wet desulfurization device and technique
CN207230587U (en) * 2017-09-09 2018-04-13 江苏瑞鼎环境工程有限公司 Heating eliminates the integral type chimney of white cigarette
CN108273370A (en) * 2018-03-02 2018-07-13 无锡雪浪环境科技股份有限公司 A kind of combination flue gas takes off white wet type fume sweetening device and its application method
CN108295633A (en) * 2018-03-13 2018-07-20 中国华电科工集团有限公司 A kind of device and method for heat-engine plant desulfurized tower loop slurry cooling eliminating white smoke
CN109157968A (en) * 2018-10-08 2019-01-08 李申强 A kind of device and method for flue gas desulphurization consumption reduction

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103599690A (en) * 2013-11-12 2014-02-26 山东中实易通集团有限公司 Composite limestone/calcium hydroxide gypsum wet desulfurization device and technique
CN207230587U (en) * 2017-09-09 2018-04-13 江苏瑞鼎环境工程有限公司 Heating eliminates the integral type chimney of white cigarette
CN108273370A (en) * 2018-03-02 2018-07-13 无锡雪浪环境科技股份有限公司 A kind of combination flue gas takes off white wet type fume sweetening device and its application method
CN108295633A (en) * 2018-03-13 2018-07-20 中国华电科工集团有限公司 A kind of device and method for heat-engine plant desulfurized tower loop slurry cooling eliminating white smoke
CN109157968A (en) * 2018-10-08 2019-01-08 李申强 A kind of device and method for flue gas desulphurization consumption reduction

Similar Documents

Publication Publication Date Title
CN107120714B (en) A kind of whole yearization comprehensive utilization energy conserving system
CN206950940U (en) High energy efficiency flue gas desulphurization system
CN101670231B (en) Device and process for converting calcium process desulfurization into temperature difference crystallizing ammonia process desulfurization
CN106801886B (en) Cooling and heat exchanging system for eliminating white smoke plume of coal-fired power plant and operation method thereof
WO2018014769A1 (en) Flue gas condensation water extraction system
CN107178814A (en) A kind of thermal power plant boiler fume afterheat is used for the energy conserving system of central heating
CN110272082B (en) Desulfurization waste water evaporation crystallization coupling flue gas reheat integrated system
CN109974062A (en) A kind of fume afterheat depth recovery system using absorption heat pump and two-stage heat exchanger
CN106582237A (en) Incineration flue gas purification and cyclic treatment system
CN202315654U (en) Flue gas dewatering and reheating device
CN205925366U (en) White equipment is taken off except that haze to flue gas condensation behind wet flue gas desulfurization
CN201164790Y (en) Gas-liquid contact non-phase-change intermediate medium heat exchange wet-type desulfurizer
CN209411826U (en) Waste water concentrating decrement treatment system
CN104633644A (en) Regularly-discharged waste water waste heat recycling system of converter waste heat boiler
WO2020073613A1 (en) Device and method for flue gas desulfurization and consumption reduction in heat-engine plant
CN209406043U (en) The system of Multi-stage cooling cooperation-removal multiple pollutant in a kind of tower
CN106853324A (en) A kind of flue gas deep dehydration treatment and WHRS
CN208553651U (en) A kind of white cigarette elimination system
CN216367326U (en) Coal/gas-fired unit carbon capture and utilization device
CN208794436U (en) A kind of boiler exhaust gas disappears white with air inlet pre-heating system
CN109157968A (en) A kind of device and method for flue gas desulphurization consumption reduction
CN108786388A (en) A kind of removing method of wet type desulfurizing flue gas water mist
CN113522002A (en) High-efficient desulfurization absorption tower of recoverable flue gas waste heat
CN101306804B (en) Process for preparing acid from flue gas by calcining molybdenum concentrate in rotary kiln
CN210340389U (en) Desulfurization waste water zero release coupling flue gas takes off white integration system

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19872106

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19872106

Country of ref document: EP

Kind code of ref document: A1