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CN-121971974-A - Flue gas purification, desulfurization and denitrification integrated system of small garbage incinerator

CN121971974ACN 121971974 ACN121971974 ACN 121971974ACN-121971974-A

Abstract

The invention belongs to the technical field of garbage incineration and the technical field of flue gas treatment, in particular to a flue gas purification, desulfurization and denitrification integrated system of a small garbage incinerator, which comprises an oxidation device, wherein the oxidation device oxidizes NOx gas in waste gas into water-soluble gas such as high-valence NO2, N2O3, N2O5 and the like through ozone and generates HNO2 and HNO3, a neutralization device is arranged at the bottom of the oxidation device, and the neutralization device neutralizes acid gas such as HNO2, HNO3 and the like through alkaline solution. When the device performs neutralization reaction on acid vulcanized gas and nitrified gas, generated waste gas can be guaranteed not to flow back into a reaction container of the gas or flow back into a container of alkaline solution, the acid gas and the alkaline solution are fully mixed and stirred through the stirring blades capable of rotating freely, the acid gas can be guaranteed to be completely dissolved in the alkaline solution, and the stirring components are arranged relatively independently and cannot be interfered by acid and alkali substances.

Inventors

  • HU XIAOCHUN
  • HU XIPING

Assignees

  • 江苏比蒙系统工程有限公司

Dates

Publication Date
20260505
Application Date
20231201

Claims (8)

  1. 1. The utility model provides a small-size garbage incinerator flue gas purification SOx/NOx control integrated system, includes oxidation equipment (1), the bottom of oxidation equipment (1) is provided with neutralization equipment (3), the bottom of neutralization equipment (3) is provided with gaseous recovery unit (4), the bottom of gaseous recovery unit (4) is provided with waste water recovery unit (5), its characterized in that: the oxidation equipment (1) comprises a conical container (11), a sectional conveying rod (2) is arranged at the bottom end of the conical container (11), lateral air pumps (13) are symmetrically arranged on two sides of the middle part of an inner cavity of the conical container (11), a catalytic disc (12) is fixedly connected to the axle center of the top of the inner cavity of the conical container (11), and an ozone injector (14) is fixedly connected to the axle center of the inner cavity of the catalytic disc (12); The neutralization equipment (3) comprises a flat box (31), a reaction container (32) is fixedly connected to the axis of the inner cavity of the flat box (31), drainage through pipes (33) are symmetrically arranged on the upper side and the lower side of the inner cavity of the reaction container (32), a through hole part (34) is arranged in the reaction container (32), and acid liquor ejectors (37) are symmetrically arranged on the two sides of the inner wall of the flat box (31); The through hole part (34) comprises a metal rotating rod (341), the outer surface of the metal rotating rod (341) is sleeved with a stirring part (35), traction connecting plates (342) are symmetrically arranged on two sides of the outer surface of the metal rotating rod (341), a veneering rotating plate (343) is fixedly connected to the bottom of each traction connecting plate (342), torque motors (345) are symmetrically arranged at the front end and the rear end of the metal rotating rod (341), and the outer surface of each veneering rotating plate (343) is spliced with an inner cavity of the reaction container (32) through small inserting blocks (344); The stirring component (35) comprises an axle center rotating shell (351), transmission gaskets (352) are symmetrically arranged on the upper side and the lower side of the middle of an inner cavity of the axle center rotating shell (351), built-in wires (353) are symmetrically arranged at the two ends of the top of each transmission gasket (352), one end, far away from each built-in wire (353), of each built-in wire (353) is fixedly connected with a rotating wheel motor (354), and stirring blades (355) are uniformly arranged on the outer surface of the axle center rotating shell (351).
  2. 2. The integrated system for purifying, desulfurizing and denitrating flue gas of a small garbage incinerator according to claim 1, wherein the top end of the rotating wheel motor (354) is rotationally connected with the outer surface of the metal rotating rod (341), one end of the transmission gasket (352) far away from the built-in wire (353) is rotationally connected with the outer surface of the metal rotating rod (341), the outer surface of the built-in wire (353) is fixedly connected with the inner cavity of the axle center rotating shell (351), and one side of the stirring blade (355) far away from the axle center rotating shell (351) is rotationally connected with the inner wall of the veneering rotating plate (343).
  3. 3. The integrated system for purifying, desulfurizing and denitrating flue gas of small garbage incinerator according to claim 2, wherein the outer surface of the veneering rotating plate (343) is rotationally connected with the inner wall of the reaction container (32), the outer surface of the output shaft of the torque motor (345) is rotationally connected with the inner cavity of the flat box (31), the number of the torque motors (345) is two, and the outer surface of the torque motor (345) is fixedly connected with the outer surface of the flat box (31) through a clamping frame.
  4. 4. The integrated system for purifying, desulfurizing and denitrating flue gas of small garbage incinerator according to claim 3, wherein the acid liquid injector (37) comprises an acid liquid extractor (371), two sides of the acid liquid extractor (371) close to a flat box (31) are symmetrically provided with an inner switching shell (372) through connecting pipes, an alkalinity detector (374) is rotatably connected to the inner wall of the inner switching shell (372), a switching rotating plate (373) is rotatably connected to the top of the alkalinity detector (374), one side of the inner cavity of the inner switching shell (372) is fixedly connected with a pressurizing motor (36) through a through pipe, the other side of the inner cavity of the inner switching shell (372) is fixedly connected with a bending through pipe (375) through a through pipe, and one end of the bending through pipe (375) far away from the inner switching shell (372) is fixedly connected with the inner cavity of the reaction vessel (32).
  5. 5. The integrated system for purifying, desulfurizing and denitrating flue gas of small garbage incinerator according to claim 1, wherein the gas recovery component (4) comprises a double-layer rotating shell (42) and a bottom sliding shell (41), a fixed air pipe (47) is uniformly arranged at the bottom of an inner cavity of the double-layer rotating shell (42), an air extractor (43) is fixedly connected to the top of the inner cavity of the double-layer rotating shell (42), an extension sliding shell (45) is slidingly connected to the bottom of the inner cavity of the bottom sliding shell (41), a spring connecting cylinder (44) is fixedly connected to the top of the extension sliding shell (45), and a turnover plug (46) is fixedly connected to the axle center of the bottom of the inner cavity of the extension sliding shell (45).
  6. 6. The integrated system for purifying, desulfurizing and denitrating flue gas of small garbage incinerator according to claim 5, wherein the middle part of the inner cavity of the double-layer rotating shell (42) is rotatably connected with a middle rotating shell (421), the top of the inner cavity of the middle rotating shell (421) is uniformly provided with a spring sliding cylinder (422), the top of the inner wall of the spring sliding cylinder (422) is slidably connected with an opening sliding shell (423), and the top of the fixed air pipe (47) is fixedly connected with the bottom of the inner cavity of the double-layer rotating shell (42).
  7. 7. The integrated system for purifying, desulfurizing and denitrating flue gas of small garbage incinerator according to claim 6, wherein the sectional transportation rod (2) comprises a main connecting rod (25), a cutting groove sliding cylinder (24) is slidably connected to the bottom end of the main connecting rod (25), an external cylinder sleeve (22) is slidably connected to the top of the outer surface of the main connecting rod (25), and a drainage connecting pipe (21) is fixedly connected to the top end of the main connecting rod (25) through a spring washer (23).
  8. 8. The integrated system for purifying, desulfurizing and denitrating flue gas of a small garbage incinerator according to claim 7, wherein the waste water recovery component (5) comprises a lifting plate (51), a water collecting tank (55) is fixedly connected to the left side of the upper surface of the lifting plate (51), a power motor (52) is fixedly connected to the right side of the upper surface of the lifting plate (51), a spiral rotating rod (53) is fixedly connected to the outer surface of an output shaft of the power motor (52), a horizontal conveying shell (54) is rotatably connected to the outer surface of the spiral rotating rod (53), and the top of an inner cavity of the horizontal conveying shell (54) is fixedly connected with the bottom of a bottom sliding shell (41).

Description

Flue gas purification, desulfurization and denitrification integrated system of small garbage incinerator Technical Field The invention belongs to the technical field of garbage incineration and the technical field of flue gas treatment, and particularly relates to a flue gas purification, desulfurization and denitrification integrated system of a small garbage incinerator. Background At present, rural household garbage problems are the most urgent environmental problems to be solved. The domestic garbage of villagers is directly burned in the open air, and no subsequent treatment exists, so that the environmental safety and the living environment of residents are seriously affected. Ash, nitrogen oxides (NOx), sulfur dioxide (SO 2), sulfur trioxide (SO 3), hydrogen chloride (HCl), hydrogen Fluoride (HF), dioxin and the like generated by garbage combustion are more harmful, and the surrounding environmental quality and physical and mental health of people can be directly influenced. With the increasing importance of various levels of governments on environmental protection, environmental protection departments have increasingly controlled the total amount of pollutant emissions. Since the gas generated by the concentrated incineration of garbage contains a large amount of sulfides and nitrites, has serious toxicity and severely pollutes the environment, the waste gas can be intensively treated, and when common equipment is used for treating the polluted gas, the sulfides and nitrites are difficult to fully react with alkaline substances to cause insufficient purification, and a stirring mode is used for causing serious corrosiveness to a motor for providing power and has no feasibility, so the improvement is needed to enhance the treatment capacity of the sulfides and nitrites. Disclosure of Invention Aiming at the defects of the prior art, the invention adopts the technical scheme that the flue gas purification, desulfurization and denitrification integrated system of the small garbage incinerator has the treatment capacity below 100 tons per day, and comprises oxidation equipment, wherein the oxidation equipment oxidizes NOx gas in waste gas into water-soluble gas of high-valence NO2, N2O3, N2O5 and the like through ozone and generates HNO2 and HNO3, the bottom of the oxidation equipment is provided with neutralization equipment which neutralizes acid gas such as HNO2 and HNO3 through alkaline solution, the bottom of the neutralization equipment is provided with a gas recovery part which recovers redundant ozone, NO2, N2O3, N2O5 and the like, and the bottom of the gas recovery part is provided with a waste water recovery part which recovers redundant alkaline solution and neutralized solution; Further, the oxidation equipment comprises a conical container, the bottom end of the conical container is provided with a sectional conveying rod, lateral air sucking pumps are symmetrically arranged on two sides of the middle part of the inner cavity of the conical container, a catalytic disc is fixedly connected to the axle center of the top of the inner cavity of the conical container, an ozone injector is fixedly connected to the axle center of the inner cavity of the catalytic disc, ozone is introduced into the conical container through pipes on two sides of the ozone injector, waste gas is introduced into the conical container through a through pipe on the axle center, and sulfides and nitrifiers in the waste gas are promoted to perform oxidation reaction with the ozone through the catalytic disc, so that acid gas is generated; Further, the neutralization equipment comprises a flat box, a reaction container is fixedly connected to the axis of the inner cavity of the flat box, drainage through pipes are symmetrically arranged on the upper side and the lower side of the inner cavity of the reaction container, opening parts are arranged in the reaction container, acid liquor ejectors are symmetrically arranged on the two sides of the inner wall of the flat box, gas in the conical container is pumped into the reaction container in the flat box by a lateral air pump, then alkaline solution is added into the reaction container by the acid liquor ejectors, and neutralization reaction is carried out on acid gas; Further, the through hole part comprises a metal rotating rod, the outer surface of the metal rotating rod is sleeved with a stirring part, traction connecting plates are symmetrically arranged on two sides of the outer surface of the metal rotating rod, the bottom of each traction connecting plate is fixedly connected with a faced rotating plate, torque motors are symmetrically arranged at the front end and the rear end of each metal rotating rod, the outer surface of each faced rotating plate is spliced with the inner cavity of the reaction container through small inserting blocks, the faced rotating plates are independently arranged in the reaction container, the positions of the faced rotating plates can