CN214501244U

CN214501244U - Solid waste combustor suitable for slag tapping boiler

Info

Publication number: CN214501244U
Application number: CN202023109694.2U
Authority: CN
Inventors: 周昊; 周虹光; 王朝伟; 张海东; 刘涛; 刘强; 孙会亮; 孟庆君; 陈香保; 张鹤; 严响林; 李帅英; 严万军; 白鹏; 付发兴
Original assignee: Xian Xire Boiler Environmental Protection Engineering Co Ltd; Tianjin Huanong Yangliuqing Thermoelectric Co Ltd
Current assignee: Xian Xire Boiler Environmental Protection Engineering Co Ltd; Tianjin Huanong Yangliuqing Thermoelectric Co Ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-10-26
Anticipated expiration: 2030-12-22

Abstract

The utility model discloses a solid waste combustor suitable for slag tapping boiler, including slag tapping boiler after combustion chamber and slag tapping boiler combustion chamber, slag tapping boiler after combustion chamber passes through welded fastening with slag tapping boiler combustion chamber and is connected, and slag tapping boiler after combustion chamber is connected with slag tapping boiler combustion chamber, slag tapping boiler after combustion chamber is provided with the screen of catching with slag tapping boiler combustion chamber junction, the air current hole of two symmetric distributions is seted up to the top outer wall of slag tapping boiler combustion chamber, and the inner wall of two air current holes all is fixed with the air current filter part. The utility model discloses utilize the higher furnace temperature of slag tapping boiler combustion chamber 7 and the perfect flue gas purification facility of system to realize the purpose that solid waste reduced volume, decrement and innoxious processing, and initial investment and running cost are lower.

Description

Solid waste combustor suitable for slag tapping boiler

Technical Field

The utility model relates to a solid waste technical field especially relates to a solid waste combustor suitable for slag tapping boiler.

Background

The solid waste refers to solid or semi-solid waste substances generated in production, consumption, life and other activities of human beings, and the existing treatment technology mainly comprises landfill, incineration, resource utilization and the like. Landfill treatment is simple, but area is large, and cause the waste of secondary pollution and energy very easily, and resourceful treatment has higher requirement to the categorised collection of solid waste, and incineration disposal rubbish minimizing is obvious, and can utilize the calorific value of a part of solid waste, and the effect is better, but the burning temperature of present incineration equipment is most not enough, leads to solid waste can not burn completely and probably produces more harmful substance, for this reason the environmental protection device of installing additional leads to the investment too big, and the running cost is higher.

The slag tapping boiler of the large coal-fired power plant has the advantages of high combustion temperature of a hearth, long retention time and the like, ash and slag are melted to be in a fluid state by utilizing the high temperature of the hearth, the ash and slag in the flue gas are captured by the slag capturing screen, most of the ash and slag are melted to form molten slag liquid and fall into a slag pool through a slag tapping hole at the bottom of the furnace, and the ultralow emission of tail flue gas is achieved by utilizing a flue gas purification facility which is perfect in a coal-fired power plant system, so that the aims of volume reduction, quantity reduction and harmless disposal of solid wastes are fulfilled. Therefore, compared with other types of power station boilers, the liquid-state slag-discharging boiler has extremely favorable conditions for mixed combustion of solid wastes, but has less domestic research, complex structure and technical blank.

The conventional treatment methods such as solid waste landfill and the like have high land cost, are easy to cause secondary pollution and resource waste, have larger one-time investment, lower combustion temperature, difficult complete harmless treatment, lower efficiency and higher operation cost, are less based on the coupling power generation technology of the liquid slag discharging boiler adopting solid waste mixing combustion, have technical blank in the field of solid waste combustors, are not suitable for combusting the solid waste, otherwise cause the problems of insufficient combustion of the solid waste, combustion loss of the combustors and the like

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a solid waste combustor suitable for a liquid slag discharging boiler.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a solid waste combustor suitable for a slagging boiler comprises a slagging boiler secondary combustion chamber and a slagging boiler combustion chamber, wherein the slagging boiler secondary combustion chamber is fixedly connected with the slagging boiler combustion chamber through welding, the slagging boiler secondary combustion chamber is connected with the slagging boiler combustion chamber, a slag catching screen is arranged at the joint of the slagging boiler secondary combustion chamber and the slagging boiler combustion chamber, two symmetrically distributed air flow holes are formed in the outer wall of the top of the slagging boiler combustion chamber, air flow filtering parts are fixed on the inner walls of the two air flow holes, a slagging chamber combustor is fixed on one side of the outer wall of the slagging boiler secondary combustion chamber, a secondary chamber combustor is fixed on the outer wall of one side of the slagging chamber combustor of the slagging boiler, and a tertiary air combustor is fixed on the outer wall of one side of the slagging chamber combustor of the slagging boiler secondary combustion chamber, and the slag chamber combustor is inserted in the rear end of the tertiary air combustor, the secondary chamber combustor comprises a cooling air ring, a water cooling sleeve and a cooling air pipe, the cooling air ring is fixed on the outer wall of the secondary chamber combustor, the water cooling sleeve is fixed on the outer wall of one end of the secondary chamber combustor, the outer wall of the cooling air ring is provided with an air inlet, and the inner wall of the air inlet is fixed with the cooling air pipe.

Preferably, the airflow filtering part comprises a filtering box and a net frame, a threaded hole is formed in the outer wall of the top of the filtering box, a sealing cover is screwed on the inner wall of the threaded hole, an air inlet is formed in the middle of the outer wall of the top of the sealing cover, an air inlet pipe is fixed to the inner wall of the air inlet, two connecting rods which are symmetrically distributed are fixed to the outer wall of the bottom of the sealing cover through bearings, filter screens which are equidistantly distributed are fixed to the outer wall of each connecting rod, threaded blocks are fixed to the bottoms of the two connecting rods, the net frame is located inside the filtering box, two connecting blocks which are symmetrically distributed are fixed to the outer wall of the top of the net frame, threaded grooves are formed in the outer wall of the top of each connecting block, and the threaded blocks and the threaded grooves form threaded connection.

Preferably, the specification of the filter screen is matched with that of the filter box, and the specification of the screen frame is matched with that of the filter box.

Preferably, the outer wall of the bottom of the filter box is provided with a round opening, an exhaust pipe is fixed on the inner wall of the round opening, and the exhaust pipe is fixedly connected with the airflow hole.

Preferably, the slag discharging port is formed at the bottom of the combustion chamber of the liquid slag discharging boiler, and a slag discharging pipe is fixed on the inner wall of the slag discharging port.

Preferably, the secondary chamber burner, the tertiary air burner and the slag chamber burner are internally lined with stainless steel tortoise shell nets and anti-abrasion coatings.

The utility model has the advantages that:

1. the solid waste combustor applicable to the slag tapping boiler realizes the purposes of volume reduction, decrement and harmless treatment of solid waste by utilizing the higher hearth temperature of a combustion chamber of the slag tapping boiler and a flue gas purification facility with a complete system, and has lower initial investment and operation cost; by adopting the design of the nozzle cooling air ring and the cooling air channel, the nozzle of the secondary chamber combustor radiated by the hearth, the elbow at the rear end of the nozzle, the straight pipe and the like are coated in the cooling air channel, so that the burning loss of the secondary chamber combustor is avoided; the solid waste can be respectively combusted in the slag melting chamber or the secondary chamber of the combustion chamber of the slag tapping boiler, different combustion temperatures and combustion times can be adopted for different solid wastes, and the risk of unsmooth slag flowing in the combustion chamber of the slag tapping boiler can be effectively avoided; the slag chamber burner is directly inserted into the tertiary air burner, and the cost is saved by utilizing the conventional tertiary air burner;

2. this solid waste combustor suitable for slag tap boiler has set up the air current filter unit, and a plurality of filter screens and screen frame can carry out prefilter to the buggy air current in the rose box, reduce follow-up operating pressure, then twist out sealed lid and can take out a plurality of filter screens and screen frame and take out, then rotate the connecting rod and can drive screw thread piece and thread groove separation, can take out the impurity in the abundant clearance screen frame with the screen frame.

Drawings

Fig. 1 is a schematic view of a vertical cross-sectional structure of a solid waste burner suitable for a slag tapping boiler according to the present invention;

FIG. 2 is a schematic structural view of a solid waste burner suitable for a slagging tap boiler according to the present invention;

FIG. 3 is a schematic view of the installation structure of the secondary chamber burner of the solid waste burner for the slagging tap boiler according to the present invention;

fig. 4 is an enlarged structural diagram of a in fig. 1.

In the figure: 1 water cooling jacket, 2 cooling air rings, 3 cooling air pipes, 4 secondary chamber burners, 5 tertiary air burners, 6 slag chamber burners, 7 slag tapping boiler combustion chambers, 8 exhaust pipes, 9 filter boxes, 10 sealing covers, 11 air inlet pipes, 12 connecting rods, 121 thread blocks, 13 filter screens, 14 net frames, 141 connecting blocks, 15 slag tapping boiler secondary combustion chambers, 16 slag catching screens and 17 slag discharging pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, a solid waste burner suitable for a slagging boiler comprises a slagging boiler secondary combustion chamber 15 and a slagging boiler combustion chamber 7, the slagging boiler secondary combustion chamber 15 is fixedly connected with the slagging boiler combustion chamber 7 by welding, the slagging boiler secondary combustion chamber 15 is connected with the slagging boiler combustion chamber 7, a slag catching screen 16 is arranged at the joint of the slagging boiler secondary combustion chamber 15 and the slagging boiler combustion chamber 7, two symmetrically distributed air flow holes are arranged on the outer wall of the top of the slagging boiler combustion chamber 7, air flow filtering parts are fixed on the inner walls of the two air flow holes, a slagging chamber combustor 6 is fixed on one side of the outer wall of the slagging boiler secondary combustion chamber 15, and a secondary chamber combustor 4 is fixed on the outer wall of the slagging boiler secondary combustion chamber 15 on one side of the slagging chamber combustor 6, the secondary combustion chamber 15 of the slag tapping boiler is positioned at the outer wall of one side of the slag chamber combustor 6 and is fixedly provided with a tertiary air combustor 5, the slag chamber combustor 6 is inserted at the rear end of the tertiary air combustor 5, the secondary chamber combustor 4 comprises a cooling air ring 2, a water cooling sleeve 1 and a cooling air pipe 3, the cooling air ring 2 is fixed on the outer wall of the secondary chamber combustor 4, the water cooling sleeve 1 is fixed on the outer wall of one end of the secondary chamber combustor 4, the outer wall of the cooling air ring 2 is provided with an air inlet, the inner wall of the air inlet is fixedly provided with the cooling air pipe 3, the purposes of volume reduction, volume reduction and harmless treatment of solid wastes are realized by utilizing the higher furnace temperature of the combustion chamber 7 of the slag tapping boiler and a flue gas purification facility with complete system, and the initial investment and the operation cost are lower; the design of the nozzle cooling air ring 2 and the cooling air channel 3 is adopted, so that the nozzle of the secondary chamber combustor 4 radiated by the hearth, the elbow at the rear end of the nozzle, the straight pipe and the like are coated in the cooling air channel 3, and the burning loss of the secondary chamber combustor 4 is avoided; the solid wastes can be respectively combusted in the slag melting chamber or the secondary chamber of the combustion chamber 7 of the slagging boiler, different combustion temperatures and combustion times can be adopted for different solid wastes, and the risk of unsmooth slag flowing in the combustion chamber 7 of the slagging boiler can be effectively avoided; the slag chamber burner 6 is directly inserted into the tertiary air burner 5, and the existing tertiary air burner 5 is utilized, so that the cost is saved;

the airflow filtering component comprises a filtering box 9 and a net frame 14, the top outer wall of the filtering box 9 is provided with a threaded port, the inner wall of the threaded port is in threaded connection with a sealing cover 10, the middle part of the top outer wall of the sealing cover 10 is provided with an air inlet, the inner wall of the air inlet is fixed with an air inlet pipe 11, the bottom outer wall of the sealing cover 10 is fixed with two connecting rods 12 which are symmetrically distributed through a bearing, the outer walls of the two connecting rods 12 are fixed with filtering nets 13 which are equidistantly distributed, the bottom ends of the two connecting rods 12 are both fixed with a threaded block 121, the net frame 14 is positioned inside the filtering box 9, the top outer wall of the net frame 14 is fixed with two connecting blocks 141 which are symmetrically distributed, the top outer wall of the connecting block 141 is provided with a threaded groove, the threaded block 121 and the threaded groove form a threaded connection fit, the filtering nets 13 and the net frame 14 in the filtering box 9 can primarily filter pulverized coal airflow, and reduce subsequent working pressure, then, the sealing cover 10 is screwed out, a plurality of filter screens 13 and the screen frame 14 can be taken out, then the connecting rod 12 is rotated to drive the thread block 121 to be separated from the thread groove, and the screen frame 14 can be taken out to fully clean impurities in the screen frame;

the specification of filter screen 13 and the specification looks adaptation of rose box 9, and the specification of screen frame 14 and the specification looks adaptation of rose box 9, the round mouth has been seted up to the bottom outer wall of rose box 9, and the inner wall of round mouth is fixed with blast pipe 8, blast pipe 8 and air current hole fixed connection, slag discharging port has been seted up to slag tap boiler combustion chamber 7 bottom, and slag discharging port's inner wall is fixed with slag discharging pipe 17, the inside lining stainless steel tortoise shell net and the abrasionproof coating of secondary chamber combustor, tertiary air combustor 5 and slag chamber combustor 6.

The working principle is as follows: the solid waste is dried, carbonized and crushed by a front end system and then is conveyed to a secondary chamber combustor 4 and a slag chamber combustor 6 to be sprayed into a hearth for combustion, a slag tapping boiler combustor 7 is utilized, the solid waste is completely combusted and the generation of pollutants such as dioxin is restrained by the higher temperature of the hearth in the combustor, one part of combustion products is melted to be in a fluid state, molten slag liquid is formed and falls into a slag pool through a slag tapping pipe 17 at the bottom of the furnace, one part of combustion products exists in flue gas in the form of fly ash, and the ultralow emission of tail flue gas is realized by utilizing a perfect flue gas purification facility of a coal-fired power plant system, so that the purposes of volume reduction, decrement and harmless disposal of the solid waste are achieved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A solid waste combustor suitable for a slagging boiler comprises a slagging boiler secondary combustion chamber (15) and a slagging boiler combustion chamber (7), and is characterized in that the slagging boiler secondary combustion chamber (15) is fixedly connected with the slagging boiler combustion chamber (7) through welding, the slagging boiler secondary combustion chamber (15) is connected with the slagging boiler combustion chamber (7), a slag catching screen (16) is arranged at the joint of the slagging boiler secondary combustion chamber (15) and the slagging boiler combustion chamber (7), two symmetrically distributed air flow holes are formed in the outer wall of the top of the slagging boiler combustion chamber (7), air flow filtering parts are fixed on the inner walls of the two air flow holes, a slagging chamber combustor (6) is fixed on one side of the outer wall of the slagging boiler secondary combustion chamber (15), and one side outer wall that slag tapping boiler after-burning room (15) is located slag room combustor (6) is fixed with after-burning room combustor (4), slag tapping boiler after-burning room (15) is located one side outer wall of slag room combustor (6) is fixed with tertiary air combustor (5), and slag room combustor (6) peg graft in the rear end of tertiary air combustor (5), after-burning room combustor (4) are including cooling air ring (2), water-cooling jacket (1) and cooling air pipe (3), and cooling air ring (2) are fixed in the outer wall of after-burning room combustor (4), and water-cooling jacket (1) are fixed in the one end outer wall of after-burning room combustor (4), the air intake has been seted up to the outer wall of cooling air ring (2), and the inner wall of air intake is fixed with cooling air pipe (3).

2. The solid waste burner applicable to the slagging tap boiler of claim 1, wherein the airflow filtering component comprises a filtering box (9) and a net frame (14), the outer wall of the top of the filtering box (9) is provided with a threaded port, the inner wall of the threaded port is screwed with a sealing cover (10), the middle part of the outer wall of the top of the sealing cover (10) is provided with an air inlet, the inner wall of the air inlet is fixed with an air inlet pipe (11), the outer wall of the bottom of the sealing cover (10) is fixed with two symmetrically distributed connecting rods (12) through a bearing, the outer walls of the two connecting rods (12) are fixed with filtering nets (13) which are distributed equidistantly, the bottom ends of the two connecting rods (12) are both fixed with threaded blocks (121), the net frame (14) is positioned inside the filtering box (9), and the outer wall of the top of the net frame (14) is fixed with two symmetrically distributed connecting blocks (141), the outer wall of the top of the connecting block (141) is provided with a thread groove, and the thread block (121) and the thread groove form threaded connection matching.

3. The solid waste burner for a slagging tap boiler according to claim 2, characterized in that the size of the screen (13) is adapted to the size of the filter box (9) and the size of the screen frame (14) is adapted to the size of the filter box (9).

4. The solid waste burner for the slagging tap boiler according to claim 2, wherein the bottom of the filtering box (9) is provided with a round mouth on the outer wall, and an exhaust pipe (8) is fixed on the inner wall of the round mouth, and the exhaust pipe (8) is fixedly connected with the airflow hole.

5. The solid waste burner suitable for the slag tapping boiler according to claim 1, wherein a slag tapping hole is opened at the bottom of the combustion chamber (7) of the slag tapping boiler, and a slag tapping pipe (17) is fixed on the inner wall of the slag tapping hole.

6. The solid waste burner for slagging boilers, according to claim 1, characterized by the fact that the secondary, tertiary air (5) and slag chamber burners (6) are lined with stainless steel hexsteel and anti-wear paint.