CN202521637U

CN202521637U - Additional middle arch for steam boiler

Info

Publication number: CN202521637U
Application number: CN2012201909817U
Authority: CN
Inventors: 钟翔
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-23
Filing date: 2012-04-23
Publication date: 2012-11-07
Anticipated expiration: 2022-04-23

Abstract

The utility model provides an additional middle arch for an SHL6-13AIII steam boiler, which is characterized in that (1) a middle arch is additionally arranged 1850 mm away from a rear wall, the bottom of the middle arch is 500 mm higher than the surface of a grate, 460 mm in width and 230 mm in thickness, and refractory bricks are mainly selected from standard refractory bricks and special-shaped refractory bricks; and (2) boiler walls on both sides of the grate are reinforced by using structural steel firstly, then a middle arch bracket is manufactured of a board and placed on the surface of the grate, skew blocks are placed on the boiler walls on both sides of the grate, the brick joint during brickwork is controlled to be 1-2 mm, and the brickwork is started from the skew blocks on both sides and divided into an upper layer and a lower layer; when the brickwork is performed at the just middle position and the last brick is laid, the last brick must be a special-shaped refractory brick, no refractory mortar is placed, and the last brick is directly and forcedly squeezed down by using a heavy hammer; and when the arch is completely built, the arch is required to be maintained 3-5 days, and then, the middle arch bracket is removed. The additional middle arch disclosed by the utility model has the advantages of high boiler heat efficiency and less flame-lifting possibility.

Description

Steam boiler adds hogging

Technical field

The utility model patent relates to a kind of boiler plant, and it is a kind of modified chain-grate boiler, is that the SHL6-13AIII steam boiler is set up hogging transformation, and boiler is caught fire soon, and boiler output improves, and coal combustion is more complete.

Background technology

Defectives such as steam boiler SHL6-13AIII is unreasonable because of former design, and coal-fired ignition point takes off fire easily away from coal gate, and chamber flue gas temperature is on the low side, and phosphorus content is high in the cinder, and energy consumption is big.

Summary of the invention

The utility model patent proposes the SHL6-13AIII steam boiler is added hogging, and concrete grammar is: (1) is set up hogging one at the wall 1850mm from the back; The hogging bottom is 500mm from the grate surface height; Width is 460mm, thickness 230mm, main selection standard refractory brick of refractory brick and quarl.

(2) building method; On the furnace wall of fire grate both sides, reinforce earlier with shaped steel; Guarantee to bear the thrust of hogging to horizontal direction; Make a hogging carriage with plank according to the hogging characteristic dimension of being known again, the hogging carriage is placed on the grate surface, on two wing furnace walls of hogging carriage, place the arch springing fragment of brick; Again the refractory brick of different size is put one time along the hogging carriage, confirmed how much the collocation situation of various refractory brick blocks and the fire clay brickwork joint thickness that will continue to employ is.Basic condition confirm good after, just can begin to have built hogging with the wet fire clay of mixing, the brickwork joint of block is controlled at 1～2mm, can not be too thick, deny meeting influence the intensity of hogging.Build the skew block of hogging since two sides by laying bricks or stones, fragment of brick is placed on wooden carriage lastblock and builds in the past with suffering, and the fragment of brick of building hogging by laying bricks or stones divides upper and lower two layers; When building when putting last piece brick right in the middle, use quarl, and not put fire clay; Directly force down firmly with weight; After arch all finishes building, maintain 3～5 days, after making, arch removes the hogging carriage that plank is processed again.

Behind the reincarnate, increased the coverage rate of arch, improved furnace temperature greatly, both strengthened burning, prolonged the stroke of flue gas again, flammable fugitive constituent is had in burner hearth than the time of staying mixes with air and burns fully fire grate.Solved the difficulty of catching fire of wet coal, problem such as ash content carbon is high, and boiler output is low.Boiler output by original 5 tons/time, can reach design load now, furnace outlet mouth temperature increases to 760 degree from original 600 degree at present, boiler slag carbon content reduces to 15% by original 32%, boiler thermal output improves more than 6%.

This patent beneficial effect is that boiler thermal output is high, and burning coal wide adaptability is difficult for taking off fire.

Description of drawings

Below in conjunction with accompanying drawing and embodiment this patent is described further.

Fig. 1 is that steam boiler adds hogging boiler structure sketch map behind reincarnate.

(1) among the figure, face arch, (2), hogging, (3), rear arch.

The specific embodiment

(1) at the wall 1850mm from the back, set up hogging one, the hogging bottom is 500mm from the grate surface height, and width is 460mm, thickness 230mm, main selection standard refractory brick of refractory brick and quarl.

Claims

1. steam boiler adds hogging, it is characterized in that: (1) is set up hogging one at the wall 1850mm from the back, and the hogging bottom is 500mm from the grate surface height, and width is 460mm, thickness 230mm, main selection standard refractory brick of refractory brick and quarl.

2. steam boiler according to claim 1 adds hogging, it is characterized in that: on the furnace wall of fire grate both sides, reinforce with shaped steel earlier, make a hogging carriage with plank again; Be placed on the grate surface, on two wing furnace walls, place the arch springing fragment of brick, the brickwork joint of block is controlled at 1～2mm; Build by laying bricks or stones since the skew block of two sides, divide upper and lower two layers, when building when putting last piece brick right in the middle; Use quarl, and do not put fire clay, directly force down firmly with weight; After arch all finishes building, maintain 3～5 days, remove the hogging carriage again.