CN211546445U - Embedded ring capable of prolonging service life and gasification furnace provided with embedded ring - Google Patents

Abstract

The utility model relates to a can improve life inlay ring has and inlays the ring body, it includes inner circle and outer lane to inlay the ring body, inner circle and outer lane integrated into one piece, it forms by a whole bisection of ring to inlay the ring body, circle in the expansion joint circumference equipartition, circle in, the quantity of circle expansion joint is 12, the expansion joint is kept away from the one end of circle in, circle is interior and is set up to the circular slot, the width an of expansion joint is 4mm, radial length b is 72mm, the radial length H of ring body is inlayed to radial length b < of expansion joint, the material of inlaying the ring body is Incoloy 825. The utility model aims at overcoming the defects existing in the prior art, and providing a gasification furnace which can improve the radial deformation of an embedded ring, prolong the service life of the embedded ring on the gasification furnace and improve the productivity.

Description

Embedded ring capable of prolonging service life and gasification furnace provided with embedded ring

Technical Field

The utility model belongs to the technical field of the gasifier and specifically relates to a can improve life inlay ring and install this gasifier of inlaying ring.

Background

The gasification furnace is important equipment in the GE coal gasification device, and has the function of enabling pure oxygen to be in combustion reaction with coal water slurry with certain concentration in a high-temperature high-pressure environment, and discharging coarse slag and black water in addition to process gas required by the subsequent working procedures. The gasification furnace is divided into a gasification chamber and a chilling chamber from top to bottom, wherein the operation temperature in the gasification chamber generally reaches 1400 ℃, and the gasification chamber is mainly responsible for the reaction of oxygen and coal water slurry; the chilling chamber is responsible for chilling and bathing reactants in the gasification chamber, primarily separating process gas and coarse slag black water, and the operation temperature is generally lower than 300 ℃.

Oxygen/coal in the gasification furnace is subjected to high-temperature and high-pressure reaction and is accompanied with a large amount of high-temperature molten coal slag, and in order to ensure the heat preservation effect and protect the furnace body in the gasification chamber, the high-chromium refractory bricks are built in the whole body in the gasification chamber. A chilling ring is arranged at the joint of the gasification chamber and the chilling chamber and is used for spraying water to chill the process gas; the inner diameter of gas circulation is smaller than that of the cylinder body of the gasification chamber, so that the refractory bricks at the bottom of the gasification chamber are generally built into a bucket-shaped conical surface which is called as a conical bottom brick; in order to facilitate the building of the cone bottom brick, a whole circle of brick supporting plates are welded at the position of the cone bottom brick in the furnace. The lower part of the brick supporting plate is connected with a chilling ring, the brick supporting plate at the part is in direct contact with a high-temperature reaction medium during operation and is easy to be eroded by scouring molten coal slag, and the brick supporting plate close to a slag hole is manufactured into an independent part for facilitating disassembly and replacement, wherein the part is called as an 'inlaying ring'.

During production and operation, high-temperature gas and molten coal slag vertically flow through the slag notch cone bottom brick, the inner side of the embedding ring and the inner side of the chilling ring from top to bottom in sequence, the inner diameter of the slag notch cone bottom brick is the minimum for protecting the chilling ring, the inner diameter of the slag notch cone bottom brick newly built conventionally is phi 737mm, the inner diameter can be increased to more than phi 910mm after the normal operation is accumulated for about 200 days, and the embedding ring is greatly scoured by in-furnace inspection, so that the situation that the chilling ring cannot be protected by the embedding ring is locally generated in the projection direction of the embedding ring. Because the production progress problem, overhaul and change time are tight and the size that need not be changed is still washed away to cinder notch awl bottom brick, so decide to adopt the means of artifical build-up welding "fleshiness" polishing again to repair and inlay the ring, the construction is accomplished for three days, but discover afterwards that on-the-spot build-up welding construction environment is poor to lead to the build-up welding quality not good, and manual polishing can't also guarantee the size precision, so the repair effect is not good, only satisfies interim emergent use. Adopt above-mentioned technical scheme, inlay ring life probably is 6 to 8 months, and the main reason that influences inlay ring life is because: the temperature of the inlaid ring is 1300-1400 ℃, the process water with the temperature of 200-300 ℃ flows in the chilling ring with the lower portion tightly attached, the temperature of the inlaid ring along the radial direction is greatly changed along the length of about 120mm, under the condition of large temperature difference, the inner ring is greatly expanded in heat, the inlaid ring generates radial deformation, the deformation cannot be recovered after a long time, therefore, a part of inlaid rings are more scoured, and the service life of the inlaid ring is shortened. Therefore, it is necessary to design a gasification furnace which can improve the radial deformation of the inlaid ring, prolong the service life of the inlaid ring on the gasification furnace and improve the productivity.

Disclosure of Invention

The utility model aims at overcoming the defects existing in the prior art, and providing a gasification furnace which can improve the radial deformation of an embedded ring, prolong the service life of the embedded ring on the gasification furnace and improve the productivity.

Realize the utility model discloses the technical scheme of purpose is: an inlay ring capable of prolonging the service life is provided with an inlay ring body; the ring inlaying body comprises an inner ring and an outer ring; the inner ring and the outer ring are integrally formed; the ring body is formed by integrally bisecting an embedded ring; an expansion gap is arranged on the inner ring; the expansion gaps are uniformly distributed on the inner ring in the circumferential direction.

Further, the number of expansion gaps on the inner ring is 12.

Further, one end of the expansion joint, which is far away from the inner periphery of the inner ring, is provided with a circular groove.

Further, the expansion gap has a width a of 4mm and a radial length b of 72 mm.

Further, the radial length b of the expansion gap is less than the radial length H of the insert ring body.

Further, the material of the ring body is Incoloy 825.

A gasification furnace with an embedded ring capable of prolonging the service life is provided with a gasification chamber and a chilling chamber; the bottom of the gasification chamber is built with a conical bottom brick; the gasification chamber is arranged above the chilling chamber; a chilling ring is arranged at the joint of the gasification chamber and the chilling chamber; the ring inlaying body is arranged between the bottom of the conical bottom brick and the chilling ring.

Further, the insert ring body is concentrically disposed with the quench ring.

Furthermore, the inner diameter of a circle formed by building the bottom of the conical bottom brick is G1 < the inner diameter of the inlaid ring body G2 < the inner diameter of the chilling ring G3.

Further, the quench ring is made of Incoloy 825.

After the technical scheme is adopted, the utility model discloses following positive effect has:

(1) the utility model discloses there are 12 expansion joints inlaying processing of ring body inner circle, 12 expansion joint circumference equipartitions are inlaying ring body inner circle, the radial length of expansion joint is 72mm, it does not have the change to inlay the original size of ring body in this scheme, inlay ring body outer lane and hold in the palm the brick board segmentation welded fastening, it is free relatively to inlay ring body inner circle, the inner circle that is equipped with the expansion joint is under great difference in temperature, can have certain free expansion, can not influence and inlay the original size of ring body, thereby improve the problem of the radial deformation who inlays the ring body, greatly reduced receives the probability of erodeing because of inlaying the ring body because of radial deformation. Through the experiment, after using the ring body of inlaying after reforming transform, its life greatly increased, life is equivalent to 10 times of original structure, when guaranteeing the result of use, has saved the maintenance cost greatly, has practiced thrift the maintenance time.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which

FIG. 1 is a schematic diagram of a prior art insert ring;

FIG. 2 is a schematic structural view of a prior art insert ring deformation;

FIG. 3 is a schematic structural view of the ring insert of the present invention;

FIG. 4 is a cross-sectional view of the ring B-B of the present invention;

FIG. 5 is a partial enlarged view of the utility model K;

FIG. 6 is a cross-sectional view of the ring insert of the present invention taken along line A-A;

fig. 7 is a schematic structural view of the gasification furnace of the present invention.

The reference numbers in the drawings are as follows: the ring-inlaid type gasification furnace comprises a ring-inlaid body 1, an inner ring 2, an outer ring 3, an expansion joint 4, a gasification chamber 5, a cone bottom brick 51, a chilling chamber 6, a chilling ring 7 and a brick-supporting plate 8.

Detailed Description

(example 1)

See fig. 3 to 4, the utility model discloses have and inlay ring body 1, inlay ring body 1 and include inner circle 2 and outer lane 3, inner circle 2 and outer lane 3 integrated into one piece, inlay ring body 1 and be formed by one inlaying the whole antithetical couplet of ring, inlay ring body 1 after the antithetical couplet cuts open and do 45 slopes to the section upper end, be provided with expansion joint 4 on inner circle 2, 4 circumference equipartitions of expansion joint are in circle 1.

Referring to fig. 3, 5 and 6, in this embodiment, more specifically, the number of the expansion joints 4 on the inner ring 2 is 12, one end of the expansion joint 4, which is far away from the inner periphery of the inner ring 2, is provided with a circular groove, the center of the circular groove is arranged at the intersection of the inner ring 2 and the outer ring 3, the circular groove is communicated with the expansion joint 4, the radius of the circular groove is R and is the same as the width a of the expansion joint 4, the width a of the expansion joint 4 is 4mm, the radial length b is 72mm, the radial length b of the expansion joint 4 is less than the radial length H of the insert ring body 1, and the insert ring body 1 is made of Incoloy 825.

See fig. 7, the utility model has a gasification chamber 5 and a chilling chamber 6, the gasification chamber 5 is arranged on the chilling chamber 6, the gasification chamber 5 is built by high-chromium refractory bricks, the bottom refractory bricks of the gasification chamber 5 are built into a bucket-shaped conical surface, called as cone bottom bricks 51, the lower end of the cone bottom bricks 51 is welded with a whole ring of brick supporting plate 8, the chilling ring 7 is arranged at the joint of the gasification chamber 5 and the chilling chamber 6, the chilling ring 7 is communicated with an external water supply device through a pipeline, an embedding ring body 1 is arranged between the bottom of the cone bottom bricks 51 and the chilling ring 7, specifically, an outer ring 3 of the embedding ring body 1 is welded and fixed with the brick supporting plate 8 in sections, an inner ring 2 of the embedding ring body 1 is relatively free, the embedding ring body 1 and the chilling ring 7 are concentrically arranged, wherein, the inner diameter G1 of the circle surrounded by the bottom masonry of the cone bottom brick 51 is more than the inner diameter G2 of the ring-inlaid body 1 and more than the inner diameter G3 of the chilling ring 7, and the chilling ring 7 is made of Incoloy 825.

The utility model discloses a theory of operation does: processing has 12 expansion joints 4 on inlaying the inner circle 2 of ring body 1, 4 circumference equipartitions of 12 expansion joints are on inner circle 2, 4 radial length b of expansion joint is 72mm, it does not have the change to inlay the original size of ring body 1, outer lane 3 and the segmentation welded fastening of brick supporting plate 8, inner circle 2 is free relatively, inner circle 2 that is equipped with expansion joint 4 is under great difference in temperature, can have certain free expansion, the problem of original structure inlaying the ring inner circle and being heated under the great difference in temperature and rise and lead to radial deformation has been avoided.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. An insert ring capable of prolonging the service life is provided with an insert ring body (1); the ring inlaying body (1) comprises an inner ring (2) and an outer ring (3); the inner ring (2) and the outer ring (3) are integrally formed; the method is characterized in that: the ring inlaying body (1) is formed by integrally bisecting an inlaying ring; the inner ring (2) is provided with an expansion gap (4); the expansion gaps (4) are uniformly distributed on the inner ring (2) in the circumferential direction.

2. The insert ring according to claim 1, wherein: the number of the expansion gaps (4) on the inner ring (2) is (12).

3. The insert ring according to claim 2, wherein: one end of the expansion joint (4) far away from the inner periphery of the inner ring (2) is provided with a circular groove.

4. The insert ring according to claim 3, wherein: the expansion joint (4) has a width a of 4mm and a radial length b of 72 mm.

5. The insert ring according to claim 4, wherein the insert ring has a life span of: the radial length b of the expansion joint (4) is less than the radial length H of the ring embedding body (1).

6. The insert ring according to any one of claims 1 to 5, wherein: the material of the ring body (1) is Incoloy 825.

7. A gasification furnace equipped with the ring insert of claim 6, having a gasification chamber (5) and a quench chamber (6); a conical bottom brick (51) is built at the bottom of the gasification chamber (5); the gasification chamber (5) is arranged above the chilling chamber (6); a chilling ring (7) is arranged at the joint of the gasification chamber (5) and the chilling chamber (6); the method is characterized in that: the ring inlaying body (1) is arranged between the bottom of the conical bottom brick (51) and the chilling ring (7).

8. The gasification furnace according to claim 7, wherein: the ring inlaying body (1) and the chilling ring (7) are arranged concentrically.

9. The gasification furnace according to claim 8, wherein: the inner diameter G1 of a circle formed by building the bottom of the cone bottom brick (51) is more than the inner diameter G2 of the inlaid ring body (1) and more than the inner diameter G3 of the chilling ring (7).

10. The gasification furnace according to claim 9, wherein: the material of the chilling ring (7) is Incoloy 825.

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