CN212841547U

CN212841547U - Combustion chamber structure of fluidized bed boiler

Info

Publication number: CN212841547U
Application number: CN202020993919.6U
Authority: CN
Inventors: 崔可德; 王成海; 蔡元振
Original assignee: Zibo Guoyang Electric Power Technology Co ltd
Current assignee: Zibo Guoyang Electric Power Technology Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-03-30
Anticipated expiration: 2030-06-03

Abstract

The utility model discloses a combustion chamber structure of fluidized bed boiler, including the combustion chamber body, air distribution plate and condensing equipment, combustion chamber body below left side sets up the feed inlet and send the coal mouth, combustion chamber body right side top middle part sets up the secondary air port, the top lower part sets up the return mouth, the return mouth sets up the mouth of pipe in this internal combustion chamber, the mouth of pipe cross-section is ascending oblique cross-section, combustion chamber body below toper open position fixed mounting air distribution plate, evenly distributed through-hole on the air distribution plate, install the hood in the through-hole, combustion chamber body outside fixed mounting condensing equipment, combustion chamber body top sets up the exhaust hole, exhaust the downthehole oxide layer that sets up. A condensing device is added, so that condensed water can be recycled, and water resources are saved; the blast cap is added, which is beneficial to the full combustion of the fuel; a threaded pipe is added, so that only the damaged T-shaped cap can be replaced after the T-shaped cap of the blast cap is damaged; and adding a material returning port, wherein the oblique section of the material returning port is upward, so that the material returning is prevented from being blown out by vulcanized air.

Description

Combustion chamber structure of fluidized bed boiler

Technical Field

The utility model relates to a boiler combustion chamber field specifically is a combustion chamber structure of fluidized bed boiler.

Background

The boiler is an energy conversion device which converts various energy provided by fuel into high-temperature water and steam with certain heat energy, and the fluidized bed boiler technology is a clean combustion technology with high efficiency and low pollution which is started in recent years and is widely applied to commercial activities. The fluidized bed combustion technology refers to a technology for burning high-speed flowing gas and dense small-particle coal particles brought by high-speed airflow in a contact manner, wherein the combustion is carried out in a combustion chamber, and the combustion chamber is the core of a fluidized bed boiler technology. The combustion chamber among the prior art lacks simple effectual condensation technique and vulcanized gas processing apparatus more, needs the wind of sufficient pressure in the boiler combustion chamber to make the abundant burning of coal grain suspension, needs more efficient air distributor and hood.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a combustion chamber structure of fluidized bed boiler to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a combustion chamber structure of fluidized bed boiler, including the combustion chamber body, air distribution plate and condensing equipment, the combustion chamber body divide into two parts from top to bottom, the top is cylindrical, the below is conical, big end down on the circular cone, combustion chamber body below left side sets up the feed inlet and send the coal mouth, combustion chamber body right side top middle part sets up the secondary air port, the top lower part sets up the return mouth, the return mouth sets up the mouth of pipe in the combustion chamber body, the mouth of pipe cross-section is ascending oblique cross-section, combustion chamber body below toper opening position fixed mounting air distribution plate, evenly distributed through-hole on the air distribution plate, installation hood in the through-hole, combustion chamber body outside fixed mounting condensing equipment, combustion chamber body top sets up the exhaust hole.

Preferably, the blast cap comprises a T-shaped cap and an air inlet, the air inlet is conical, the upper part of the cone is small and the lower part of the cone is large, a threaded hole matched with the upper end of the cone is fixedly arranged above the air inlet, the T-shaped cap is hollow, air outlets are arranged at two ends of the T-shaped cap, threads are arranged at the lower end of the T-shaped cap, the threaded hole is in threaded connection with the T-shaped cap, and the outer side of the threaded hole is fixedly arranged with the air distribution plate.

Preferably, condensing equipment includes the condenser pipe, water pump and valve, the condenser pipe is "U" shape and arranges at combustion chamber body outer wall, combustion chamber body fixed mounting is hugged closely to the condenser pipe, condenser pipe one end exit linkage leading water pipe, the leading water pipe box is in the condenser pipe mouth of pipe outside, leading water piping connection water pump, the water pump sets up in the cold water pond, cold water pond right side sets up condensation tank and recovery pond respectively, through pipeline fixed connection between the pond, the installation valve on the pipeline between the pond, another exit fixed connection outlet pipe of condenser pipe, the delivery port setting of outlet pipe is in recovery pond top, delivery port department sets up the valve.

Preferably, the air distribution plate is circular and has the same cross-sectional area as the tapered opening.

Preferably, an oxide layer is arranged in the exhaust hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. by adding the condensing device, the condensed water can be recycled, so that water resources and manpower are saved;

2. by adding the blast cap, the speed of the vulcanization air is faster, and the full combustion of fuel is facilitated;

3. the T-shaped cap of the blast cap can be detached by adding the threaded pipe, the T-shaped cap is easy to damage in a combustion chamber, and only the damaged T-shaped cap can be replaced after the T-shaped cap is damaged without replacing the whole air distribution plate;

4. through adding the return port, the oblique cross section of the return port is upward, so that the return material is prevented from being blown out by the vulcanizing wind.

Drawings

FIG. 1 is a cross-sectional view of a combustion chamber;

FIG. 2 is a cross-sectional view of the hood;

FIG. 3 is a bottom view of the grid plate;

FIG. 4 is a schematic view of a condensing unit;

FIG. 5 is a top view of the combustion chamber.

In the figure: the device comprises a combustion chamber body 1, a secondary air port 2, a material returning port 3, a feeding port 4, a coal feeding port 5, an air distribution plate 6, an air cap 7, an air outlet 71, a T-shaped cap 72, a threaded hole 73, an air inlet 74, a condensing device 8, a condensing pipe 81, a cold water tank 82, a condensing tank 83, a recovery tank 84, a water outlet pipe 85, a water leading pipe 86, an inter-tank pipeline 87, a valve 88, a water pump 89, a filter layer 9 and an exhaust hole 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below. The embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative work, all belong to the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution:

the utility model provides a combustion chamber structure of fluidized bed boiler, including combustion chamber body 1, air distribution plate 6 and condensing equipment 8, combustion chamber body 1 divide into about two parts, the top is cylindrical, the below is conical, big end down on the circular cone, 1 below left side of combustion chamber body sets up feed opening 4 and send

coal mouth

5, 1 right side top middle part of combustion chamber body sets up secondary air port 2, the top lower part sets up material return mouth 3, material return mouth 3 is located the mouth of pipe cross-section of combustion chamber body 1 and is ascending oblique cross-section, 1 below toper opening position fixed mounting air distribution plate 6 of combustion chamber body, evenly distributed through-hole on the air distribution plate 6, installation hood 7 in the through-hole, 1 outside fixed mounting condensing equipment 8 of combustion chamber body, 1 top of combustion chamber body sets up exhaust hole 10.

The blast cap 7 comprises a T-shaped cap 72 and an air inlet 74, the air inlet 74 is conical, the upper part of the cone is small, the lower part of the cone is large, a threaded hole 73 matched with the upper end of the cone is fixedly arranged above the air inlet 74, the interior of the T-shaped cap 72 is hollow, air outlets 71 are arranged at two ends of the T shape, threads are arranged at the lower end of the T shape, the threaded hole 73 is in threaded connection with the T-shaped cap 72, and the outer side of the threaded hole 73 is fixedly arranged with the air distribution plate 6;

the condensing device 8 comprises a condensing pipe 81, a water pump 89 and a valve 88, wherein the condensing pipe 81 is arranged on the outer wall of the combustion chamber body 1 in a U shape, the condensing pipe 81 is fixedly mounted by being clung to the combustion chamber body 1, an outlet at one end of the condensing pipe 81 is connected with a water conduit 86, the water conduit 86 is sleeved outside the pipe orifice of the condensing pipe 81, the water conduit 86 is connected with the water pump 89, the water pump 89 is arranged in a cold water tank 82, the right side of the cold water tank 82 is respectively provided with a condensing tank 83 and a recovery tank 84, the tanks are fixedly connected with each other through an inter-tank pipeline 87, the valve 88 is mounted on the inter-tank pipeline 87, the other outlet of the condensing pipe 81 is fixedly connected with a water outlet pipe 85, the water outlet of the;

the air distribution plate 6 is circular and has the same cross-sectional area with the conical opening;

an oxide layer 9 is arranged in the exhaust hole 10.

The working principle is as follows: the boiler during operation, the sulphide wind blows to this internal from the grid plate, this is internal from sending the coal mouth to get into the combustion chamber for the coal grain, the lime stone gets into the combustion chamber body from the feed inlet, the hood bottom that the sulphide wind set up from the grid plate gets into, through screw hole and "T" shape cap, blow off from both ends air outlet, because the air current is blown off by the gathering, obtain bigger initial velocity, the hood air outlet is in combustion chamber body bottom toper, both sides are the inclined plane, parallel wind is risen by the inner wall reflection, the air current that rises at a high speed wraps up the coal grain and lime stone and carries the rising, make the coal grain fully burn. Threaded connection between blast cap "T" shape cap and the air intake, can directly change the "T" shape cap of damage after "T" shape cap damages, extension grid plate life also practices thrift the cost. The sulfur-containing waste gas generated after combustion is neutralized by limestone, the rest is filtered by an oxidation layer, the main component of the oxidation layer is manganese sulfate, the waste gas after desulfurization treatment is discharged, coal particles and high-temperature gas which are completely combusted enter a cyclone separator from a secondary air port, the high-temperature gas enters a next device, solid coal particles return to a combustion chamber body from a material return port and are blown and combusted by sulfuration air again, flowing condensed water is filled in a condensation pipe on the outer wall of the combustion chamber body, the temperature of the outer wall of the combustion chamber body is reduced by the condensed water, the service life of the combustion chamber body is prolonged, the condensed water is pumped out of a cold water pool by a water pump through a water guide pipe and enters the condensation pipe, the model of the water pump is 100QJ2-165/30, the condensed water enters a water outlet pipe after absorbing heat, a valve on the water outlet pipe is opened, the heat-containing, and closing a valve between the condensation tank and the cold water tank, closing the valve between the condensation tank and the recovery tank when the water amount in the condensation tank is enough, so that the water is condensed in the condensation tank, opening the valve between the condensation tank and the cold water tank after condensation, filling the condensed water in the cold water tank, closing the valve after filling, and fully performing the previous operation to recycle the condensed water.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a combustion chamber structure of fluidized bed boiler, includes combustion chamber body (1), air distribution plate (6) and condensing equipment (8), its characterized in that: two parts about combustor body (1) divide into, the top is cylindrical, the below is conical, big end down on the circular cone, combustor body (1) below left side sets up feed inlet (4) and send coal mouth (5), combustor body (1) right side top middle part sets up secondary air port (2), the top lower part sets up return mouth (3), return mouth (3) set up the mouth of pipe in combustor body (1), the mouth of pipe cross-section is ascending oblique section, combustor body (1) below toper opening position fixed mounting air distribution plate (6), evenly distributed through-hole on air distribution plate (6), installation hood (7) in the through-hole, combustor body (1) outside fixed mounting condensing equipment (8), combustor body (1) top sets up exhaust hole (10).

2. A combustion chamber structure of a fluidized bed boiler in accordance with claim 1, wherein: the blast cap (7) comprises a T-shaped cap (72) and an air inlet (74), the air inlet (74) is conical, the upper part of the cone is small, the lower part of the cone is large, a threaded hole (73) matched with the upper end of the cone is fixedly arranged above the air inlet (74), the T-shaped cap (72) is hollow, air outlets (71) are arranged at two ends of the T shape, threads are arranged at the lower end of the T shape, the threaded hole (73) is in threaded connection with the T-shaped cap (72), and the outer side of the threaded hole (73) is fixedly arranged with the air distribution plate (6).

3. A combustion chamber structure of a fluidized bed boiler in accordance with claim 1, wherein: the condensing device (8) comprises a condensing pipe (81), water pump (89) and valve (88), condenser pipe (81) are "U" shape and arrange at combustion chamber body (1) outer wall, condenser pipe (81) hug closely combustion chamber body (1) fixed mounting, condenser pipe (81) one end exit linkage leading pipe (86), leading pipe (86) cover is in condenser pipe (81) mouth of pipe outside, leading pipe (86) connection water pump (89), water pump (89) set up in cold water pond (82), cold water pond (82) right side sets up condensate sump (83) and recovery pond (84) respectively, through pipeline (87) fixed connection between pond and the pond, install valve (88) on pipeline (87) between pond, another exit fixed connection outlet pipe (85) of condenser pipe (81), the delivery port setting of outlet pipe (85) is in recovery pond (84) top, delivery port department sets up valve (88).

4. A combustion chamber structure of a fluidized bed boiler in accordance with claim 1, wherein: the air distribution plate (6) is circular and has the same cross-sectional area as the conical opening.

5. A combustion chamber structure of a fluidized bed boiler in accordance with claim 1, wherein: an oxide layer (9) is arranged in the exhaust hole (10).