CN210624507U

CN210624507U - Ash spraying device for incineration and purification of ash in fluidized bed furnace

Info

Publication number: CN210624507U
Application number: CN201921281139.2U
Authority: CN
Inventors: 李金龙; 江军; 李欢; 李志刚; 马伟; 刘永伟; 段利飞; 郭兴伟; 张�杰
Original assignee: Xinjiang Zhongtai Chemical Co Ltd; Xinjiang Zhongtai Mining and Metallurgy Co Ltd
Current assignee: Xinjiang Zhongtai Chemical Co Ltd; Xinjiang Zhongtai Mining and Metallurgy Co Ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-05-26
Anticipated expiration: 2029-08-08

Abstract

The utility model relates to a fluidized bed furnace spouts ash technical field, is an burn ash purification and spout ash device in fluidized bed furnace. Comprises a base, a fluidized bed furnace and a purified ash spraying pipeline; a fluidized bed furnace is built on a base, a blast cap is arranged at the bottom of the fluidized bed furnace, a fluidized bed is formed from 500 mm to 700mm from the bottom of the fluidized bed furnace to the top, and a purified ash spraying pipeline extending into the fluidized bed furnace from the outside is fixedly arranged on the side wall of the fluidized bed furnace between 80 mm to 120 mm from the bottom of the fluidized bed furnace to the top. The utility model discloses rational in infrastructure, convenient to use, the ash hole through spouting ash pipeline with the purification ash sets up the lower part on boiling layer to let the purification ash form the combustion area bottom boiling layer, the purification ash that does not fully burn up passes through the negative pressure and during upwards removing, loops through the middle part on boiling layer, the upper portion on boiling layer, through this three region back, it is abundant to purify the ash combustible combustion, furnace sediment volume is normal, does not have the purification ash of not fully burning in the dust removal, has reduced the potential safety hazard.

Description

Ash spraying device for incineration and purification of ash in fluidized bed furnace

Technical Field

The utility model relates to a fluidized bed furnace spouts ash technical field, is an burn ash purification and spout ash device in fluidized bed furnace.

Background

A drying kiln fluidized bed furnace is a high-efficiency energy-saving environment-friendly thermal equipment. The boiling furnace body consists of three parts of a combustion chamber, a secondary combustion chamber and an air distribution chamber. The combustion chamber mainly comprises an air bed, an air box, an air cap, a slag discharge pipe and the like. The carbon particles with the granularity less than or equal to 3mm after being screened are conveyed to a furnace top powder bin through a closed pipeline, the powder is uniformly conveyed into a fluidized bed through a disk feeder to be mixed with air and bottom slag sprayed from small holes of a blast cap to form a fluidized bed, high-temperature flue gas required for drying the carbon is generated and generally controlled to be 850-1100 ℃, the high-temperature flue gas is cooled to 700 ℃ after sequentially passing through a secondary combustion chamber and an air distribution chamber, and the water is evaporated and separated by contacting the carbon. The purified ash is used as a fuel for producing high-temperature flue gas by a fluidized bed furnace, and mainly comprises the following components: 0.012 percent of phosphorus, 0.78 percent of sulfur, 20.82 percent of calcium and 45.9 percent of fixed carbon, and is extremely easy to spontaneously combust in the air. The thickness of bottom slag in the fluidized bed furnace is 500 mm, the height of a normal fluidized bed is 500-700 mm, and the installation height of the ash-spraying pipe for purifying ash in the furnace is 800 mm. The ash spraying pipe (adopting a 310S stainless steel pipe and resisting high temperature 1100 ℃) horizontally extends into the fluidized bed furnace, a combustion area is formed at the upper part of the fluidized bed layer, the operation finds that the purified ash is not completely combusted, only part of the purified ash can be burnt, the ash is light and is positioned in the middle of the hearth, when the flow direction of high-temperature flue gas is changed by negative pressure generated by a kiln tail fan, the non-burnt purified ash is sucked into the dust removal, and potential safety hazards exist due to the fact that the ash is easy to spontaneously combust.

Disclosure of Invention

The utility model provides an incineration purification ash spouts ash device in fluidized bed furnace has overcome above-mentioned prior art not enough, and it can effectively solve the purification ash burning and incompletely leads to in the purification ash that does not burn is inhaled the dust removal and there is the potential safety hazard problem.

The technical scheme of the utility model is realized through following measure: an incineration purification ash spraying device in a fluidized bed furnace comprises a base, the fluidized bed furnace and an ash purification and spraying pipeline; a fluidized bed furnace is built on a base, a blast cap is arranged at the bottom of the fluidized bed furnace, a fluidized bed is formed from 500 mm to 700mm from the bottom of the fluidized bed furnace to the top, and a purified ash spraying pipeline extending into the fluidized bed furnace from the outside is fixedly arranged on the side wall of the fluidized bed furnace between 80 mm to 120 mm from the bottom of the fluidized bed furnace to the top.

The following are further optimization or/and improvement of the technical scheme of the utility model:

and a purified ash spraying pipeline which extends into the boiling furnace from outside is fixedly arranged on the side wall of the boiling furnace from the bottom of the boiling furnace to 100 mm.

The ash spraying pipeline for purifying ash comprises a horizontal pipe, an inclined pipe and a horizontal ash discharging pipe, wherein the horizontal pipe is fixedly installed on the side wall of the fluidized bed furnace, the inclined pipe and the horizontal ash discharging pipe which are high at the left and low at the right are located in the fluidized bed furnace, and the horizontal pipe, the inclined pipe and the horizontal ash discharging pipe are integrally fixed together from left to right.

The lower part of the inner side of the fluidized bed furnace is in a frustum shape with a wide top and a narrow bottom, the ash purification and spraying pipeline is fixedly installed on the side wall of the fluidized bed furnace through welding, the base is a concrete base, and the blast cap is installed at the bottom of the fluidized bed furnace through high-temperature resistant castable.

The utility model discloses rational in infrastructure, convenient to use, the ash hole through spouting ash pipeline with the purification ash sets up the lower part on boiling layer to let the purification ash form the combustion area bottom boiling layer, the purification ash that does not fully burn up passes through the negative pressure and during upwards removing, loops through the middle part on boiling layer, the upper portion on boiling layer, through this three region back, it is abundant to purify the ash combustible combustion, furnace sediment volume is normal, does not have the purification ash of not fully burning in the dust removal, has reduced the potential safety hazard.

Drawings

Fig. 1 is a schematic view of the sectional structure of the present invention.

The codes in the figures are respectively: 1 is a base, 2 is a fluidized bed furnace, 3 is a blast cap, 4 is a fluidized bed, 5 is a horizontal pipe, 6 is an inclined pipe, and 7 is a horizontal ash discharging pipe.

Detailed Description

The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.

In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of the upper, lower, etc. is determined in accordance with the layout direction of fig. 1 of the specification.

The technical scheme of the utility model is realized through following measure:

the invention will be further described with reference to the following examples and drawings:

as shown in the attached figure 1, the incineration and purification ash spraying device in the fluidized bed furnace comprises a base 1, a fluidized bed furnace 2 and an ash purification and spraying pipeline; a fluidized bed furnace 2 is built on a base 1, a blast cap 3 is arranged at the bottom of the fluidized bed furnace 2, a fluidized bed layer 4 is formed from 500 mm to 700mm from the bottom of the fluidized bed furnace 2, and a purified ash spraying pipeline extending into the fluidized bed furnace 2 from outside is fixedly arranged on the side wall of the fluidized bed furnace between 80 mm to 120 mm from the bottom of the fluidized bed furnace 2. The ash outlet through spouting ash pipe with the purification ash sets up in the lower part of boiling layer 4 to let the purification ash form the combustion area in boiling layer 4 bottom, the purification ash that does not fully burn up passes through the negative pressure during to the upper portion removal, loops through the middle part of boiling layer 4, the upper portion of boiling layer 4, through these three regional backs, it is abundant to purify ash combustible combustion, and furnace sediment volume is normal, does not have the purification ash of insufficient combustion in the dust removal, has reduced the potential safety hazard.

The incineration purification ash spraying device in the fluidized bed furnace can be further optimized or/and improved according to the actual needs:

according to the requirement, a purification ash spraying pipeline which extends into the fluidized bed furnace from outside is fixedly arranged on the side wall of the fluidized bed furnace at the position from the bottom of the fluidized bed furnace 2 to 100 mm.

As shown in the attached figure 1, the lower part of the inner side of the fluidized bed furnace 2 is in a frustum shape with a wide upper part and a narrow lower part, the ash purification and spraying pipeline comprises a horizontal pipe 5, an inclined pipe 6 and a horizontal ash discharge pipe 7, the horizontal pipe 5 is fixedly arranged on the side wall of the fluidized bed furnace, the inclined pipe 6 with a high left and a low right and the horizontal ash discharge pipe 7 are positioned in the fluidized bed furnace 2, and the horizontal pipe 5, the inclined pipe 6 and the horizontal ash discharge pipe 7 are integrally fixed together from left to right. Thus, the inclined tube 6 can be matched with the frustum surface, and the pipeline is convenient to arrange. And the arrangement can be installed by utilizing the installation hole of the prior purified ash spraying pipeline, so that the cost is saved.

According to the needs, the ash purification and spraying pipeline is fixedly installed on the side wall of the fluidized bed furnace through welding, the base 1 is a concrete base, and the blast cap 3 is installed at the bottom of the fluidized bed furnace 2 through high-temperature resistant castable.

Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.

Claims

1. An incineration purification ash spraying device in a fluidized bed furnace is characterized by comprising a base, the fluidized bed furnace and an ash purification and spraying pipeline; a fluidized bed furnace is built on a base, a blast cap is arranged at the bottom of the fluidized bed furnace, a fluidized bed is formed from 500 mm to 700mm from the bottom of the fluidized bed furnace to the top, and a purified ash spraying pipeline extending into the fluidized bed furnace from the outside is fixedly arranged on the side wall of the fluidized bed furnace between 80 mm to 120 mm from the bottom of the fluidized bed furnace to the top.

2. The ash spraying device for incineration and purification in a fluidized bed furnace according to claim 1, wherein a purified ash spraying pipe extending into the fluidized bed furnace from outside is fixedly installed on a side wall of the fluidized bed furnace at a position 100 mm above the bottom of the fluidized bed furnace.

3. The incineration ash-spraying device in a fluidized bed furnace according to claim 1 or 2, wherein the lower part of the inside of the fluidized bed furnace is in a frustum shape with a wide top and a narrow bottom, the ash-spraying purification pipeline comprises a horizontal pipe, an inclined pipe and a horizontal ash discharge pipe, the horizontal pipe is fixedly arranged on the side wall of the fluidized bed furnace, the inclined pipe and the horizontal ash discharge pipe which are arranged in the fluidized bed furnace are high at the left and low at the right, and the horizontal pipe, the inclined pipe and the horizontal ash discharge pipe are integrally fixed together from the left to the right.

4. The device for burning purified ash in a fluidized bed furnace according to claim 1 or 2, wherein the purified ash spraying pipe is fixedly installed on the side wall of the fluidized bed furnace by welding, the base is a concrete base, and the hood is installed at the bottom of the fluidized bed furnace by a refractory castable.

5. The device for burning purified ash in a fluidized bed furnace according to claim 3, wherein the purified ash spraying pipe is fixedly installed on the side wall of the fluidized bed furnace by welding, the base is a concrete base, and the hood is installed at the bottom of the fluidized bed furnace by a refractory castable.