CN217297747U - Multi-unit combined gasification furnace body device - Google Patents

Abstract

The utility model relates to a multi-unit combined gasification furnace body device, which comprises a furnace body top unit, a furnace body upper layer unit, a furnace body lower layer unit and a furnace body bottom unit; the furnace body upper layer unit is composed of a plurality of upper cutting units, and each upper cutting unit comprises an upper cutting shell, an upper cutting hearth body, an upper layer pipe row, an upper fiber felt layer and an upper filling layer; the furnace body lower layer unit consists of a plurality of lower cutting units, and each lower cutting unit comprises a lower cutting shell, a lower cutting hearth body, a lower layer pipe row, a lower fiber felt layer and a lower filling layer; the pipe joints in the upper pipe row are fixedly arranged with the upper splitting shell; and the pipe joints in the lower pipe row are fixedly installed with the split lower shell. The utility model discloses can shorten the preparation cycle and the maintenance cycle of equipment, prolong the life of equipment, reduce parking time and parking number of times.

Description

Multi-unit combined gasification furnace body device

Technical Field

The utility model relates to the technical field of coal gasification, in particular to a multi-unit combined gasification furnace body device.

Background

Chinese patent 202010173254.9 discloses a furnace body cooling device for a coal gasifier, comprising a furnace body for gasifying raw material coal, wherein the top of the furnace body is provided with a raw material coal inlet pipe section, the bottom of the furnace body is provided with an ash outlet, and the middle of the furnace body is provided with a gasification reaction hearth; the bottom end of the raw material coal inlet pipe section is connected with a conical coal distribution section, a cooling water jacket device is arranged on the coal distribution section, and a furnace body cooling water jacket device is arranged on the outer wall of the furnace body. The furnace body structure of the prior art is a full water jacket structure, and the inner wall is a full steel plate structure. In the actual operation process, the inner wall is found to have serious corrosion and abrasion, and is forced to be shut down for maintenance, thereby causing loss to production. The reason for the damage is found to be halogen element corrosion and alkali metal corrosion through analysis, which depends on different contents of halogen element and alkali metal element in the gasified coal, so as to generate different corrosion conditions, and corresponding inner wall materials are required to be selected according to the content condition of the element of the production coal tested at the beginning, and the selected inner wall materials are equivalent to limited coal types, so that the coal adaptability of the gasification furnace is reduced. Once the coal type changes, cause the inner wall to corrode, in addition the grate rotates and drives coal and coal ash to rub the inner wall, will cause the water jacket to reveal, and the gasifier is forced to stop the maintenance, causes the loss for production. Therefore, there is a need to provide a new multi-unit modular gasifier apparatus that overcomes the deficiencies of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multi-unit combined gasification furnace body device, which comprises a furnace body top unit, a furnace body upper layer unit, a furnace body lower layer unit and a furnace body bottom unit; the furnace body upper layer unit and the furnace body lower layer unit are composed of a plurality of segmentation units; the utility model discloses can shorten the preparation cycle and the maintenance cycle of equipment, prolong the life of equipment, reduce parking time and parking number of times.

The purpose of the utility model is realized by the following technical proposal: a multi-unit combined gasification furnace body device comprises a furnace body top unit, a furnace body upper layer unit, a furnace body lower layer unit and a furnace body bottom unit; the furnace body upper layer unit is composed of a plurality of upper cutting units; each upper cutting unit comprises an upper cutting shell, an upper cutting hearth body, an upper pipe row, an upper fiber felt layer and an upper filling layer; the furnace body lower layer unit is composed of a plurality of lower cutting units; each lower cutting unit comprises a lower cutting shell, a lower cutting hearth body, a lower pipe row, a lower fiber felt layer and a lower filling layer; the upper fiber felt layer and the upper filling layer are arranged between the upper splitting shell and the upper splitting hearth body in the upper splitting unit, the upper pipe row is embedded in the upper filling layer, and pipe joints in the upper pipe row are fixedly installed with the upper splitting shell; the lower fiber felt layer and the lower filling layer are arranged between the lower splitting shell and the lower body of the splitting hearth in the lower splitting unit, the lower pipe row is embedded in the lower filling layer, and pipe joints in the lower pipe row are fixedly installed with the lower splitting shell.

In order to prolong the utility model discloses a furnace life, segmentation furnace upper part of the body surface sets up the wearing layer, segmentation furnace lower part of the body surface sets up the wearing layer.

In order to prolong the utility model discloses a furnace life to the maintenance is simple and convenient, segmentation furnace upper part of the body surface sets up wear-resisting potsherd, segmentation furnace lower part of the body surface sets up wear-resisting potsherd.

In order to prolong the utility model discloses a furnace life, it is simple and convenient to change wear-resisting part, reduces cost of maintenance, segmentation furnace upper part of the body surface hangs and adorns wear-resisting potsherd, segmentation furnace lower part of the body surface hangs and adorns wear-resisting potsherd.

Compared with the prior art, the utility model have following advantage:

1. the utility model discloses a plurality of upper cutting unit and a plurality of lower cutting unit, convenient composite mounting fast has shortened the manufacturing cycle of equipment, has reduced manufacturing cost.

2. Because the utility model discloses set up the wearing layer on segmentation furnace upper part of the body surface, set up the wearing layer on segmentation furnace lower part of the body surface to parking time and parking number of times have significantly reduced.

3. Because the utility model discloses set up wear-resisting potsherd at segmentation furnace upper part of the body surface, set up wear-resisting potsherd at segmentation furnace lower part of the body surface, can not only prolong the life of equipment, can also practice thrift cost of maintenance.

4. Because the utility model discloses at segmentation furnace upper part of the body surface dress wear-resisting potsherd, at segmentation furnace lower part of the body surface dress wear-resisting potsherd, prolonged the life of equipment, it is simple and convenient to change wear parts, has shortened the maintenance duration and the maintenance cost of equipment.

Drawings

FIG. 1 is a schematic view of the overall structure of the furnace body of the present invention;

FIG. 2 is a schematic structural diagram of the upper unit of the furnace body;

FIG. 3 is a schematic view of the structure of the lower layer unit of the furnace body;

FIG. 4 is a sectional view of the upper unit of the furnace body;

fig. 5 is a structural view of an upper cutting unit of the present invention;

fig. 6 is a schematic view of the structure of the wear-resistant ceramic plate of the present invention.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

The first embodiment is as follows:

referring to fig. 1, 2, 3, 4 and 5, the multi-unit combined gasification furnace apparatus of the present invention comprises a furnace top unit 1, a furnace upper unit 2, a furnace lower unit 3 and a furnace bottom unit 4; the furnace body upper layer unit is composed of a plurality of upper cutting units 201; each upper cutting unit comprises a cutting upper shell 202, a cutting hearth upper body 203, an upper pipe row 204, an upper fiber felt layer 205 and an upper filling layer 206; the furnace body lower layer unit is composed of a plurality of lower cutting units; each lower cutting unit comprises a lower cutting shell, a lower cutting hearth body, a lower pipe row, a lower fiber felt layer and a lower filling layer; the upper fiber felt layer and the upper filling layer are arranged between the upper splitting shell and the upper splitting hearth body in the upper splitting unit, the upper pipe row is embedded in the upper filling layer, and pipe joints in the upper pipe row are fixedly installed with the upper splitting shell; the lower fiber felt layer and the lower filling layer are arranged between the lower splitting shell and the lower splitting hearth body in the lower splitting unit, the lower pipe row is embedded in the lower filling layer, and pipe joints in the lower pipe row are fixedly installed with the lower splitting shell. In this embodiment, the structure of the furnace lower layer unit is the same as that of the furnace upper layer unit, and is interchangeable, and can be understood from the structure of the furnace upper layer unit, which is not described in detail. The upper fiber felt layer and the lower fiber felt layer in the embodiment adopt aluminum silicate refractory felts; the upper filling layer and the lower filling layer adopt refractory concrete as filling layers. In this embodiment, the upper body and the lower body of the splitting hearth are made of carbon steel or nickel-based stainless steel made of NS336 material.

In this embodiment, the furnace body top unit adopts a structural form of the prior art, and includes a raw material coal inlet, a coal distribution mechanism, and a gas output pipe orifice (the structure is not shown in the figure). In the embodiment, the furnace body bottom unit adopts the structural form of the prior art, and comprises a conical cylindrical shell, wherein a cooling water jacket is arranged on the shell, and a water inlet and a water outlet are arranged on the cooling water jacket; the bottom of the conical shell is provided with an ash discharge port (the structure is not shown in the figure). The grate device is arranged in the bottom unit of the furnace body, belongs to the prior art and is not described.

In the embodiment, the furnace body of the utility model adopts a cylindrical design, a transition flange 5 is arranged between the top unit of the furnace body and the upper unit of the furnace body, a transition flange 6 is arranged between the upper unit of the furnace body and the lower unit of the furnace body, and a transition flange 7 is arranged between the lower unit of the furnace body and the bottom unit of the furnace body; the upper furnace body unit and the lower furnace body unit are formed by combining four independently manufactured upper cutting units or four independently manufactured lower cutting units, the combination can cause size deviation in installation construction, and connection adjustment needs to be carried out through the transition flange.

In this embodiment, the upper pipe row in the upper dividing unit is provided with a water inlet pipe joint and a water outlet pipe joint, respectively. All the water inlet pipe joints are communicated with a water inlet distribution pipeline in parallel, all the water outlet pipe joints are communicated with a water outlet collecting pipeline in parallel, and then the water inlet pipe joints are connected into a cooling circulation system. The water inlet distribution pipes and the water outlet collection pipes and the cooling circulation system belong to the prior art and are not described in detail.

In this embodiment, the furnace body upper layer unit is composed of four upper dividing units, an upper layer tube bank in each upper dividing unit includes 10 cooling water tubes, and 40 cooling water tubes are provided in the furnace body upper layer unit, so as to constitute a tube bank for cooling the furnace body upper layer unit. The furnace body lower layer unit consists of four lower cutting units, a lower layer pipe row in each lower cutting unit comprises 10 cooling water pipes, and 40 cooling water pipes are arranged in the furnace body lower layer unit in total, so that the pipe row for cooling the furnace body lower layer unit is formed. In order to improve the heat exchange efficiency, a plurality of fins 211 (see fig. 3) are provided on each of the cooling water pipes.

In the embodiment, rigid wall plates are arranged on the upper part, the lower part, the left part and the right part of each upper cutting unit, and a framework is arranged inside each upper cutting unit to form an independent part; each upper cutting unit can be processed and manufactured according to the requirement, and can also be processed and manufactured in advance to be used as a spare part for maintenance; the four upper cutting units are assembled and installed into a whole to form the upper layer unit of the furnace body, and the butt joint between two adjacent upper cutting units is welded into a whole in a sealing mode. Rigid wall plates are arranged on the upper side, the lower side, the left side and the right side of each lower cutting unit, and a framework is arranged in each lower cutting unit to form an independent component; the four lower cutting units are assembled into a whole to form a furnace body lower layer unit, and the butt joint between two adjacent lower cutting units is welded into a whole in a sealing mode. In the embodiment, any one cutting unit is damaged and can be detached and replaced; the maintenance time of the apparatus can be shortened and the maintenance cost can be reduced.

Example two:

the present embodiment is an improvement on the basis of the first embodiment, and the same portions in the present embodiment as those in the first embodiment should be understood by referring to the content disclosed in the first embodiment, and will not be described repeatedly herein; the technical contents disclosed in the first embodiment should also be regarded as the technical contents disclosed in the present embodiment.

In order to prolong the utility model discloses a furnace life, segmentation furnace upper part of the body surface sets up the wearing layer, segmentation furnace lower part of the body surface sets up the wearing layer. The wear-resistant layer is a high-temperature-resistant alumina wear-resistant layer, and the thickness of the wear-resistant layer is set to be 0.5 mm.

Example three:

the present embodiment is an improvement on the basis of the first embodiment, and the same portions in the present embodiment as those in the first embodiment should be understood with reference to the content disclosed in the first embodiment, and will not be described repeatedly herein; the technical contents disclosed in the first embodiment should also be regarded as the technical contents disclosed in the present embodiment.

Referring to fig. 5 and fig. 6, in order to prolong the service life of the furnace, the upper surface of the cutting furnace is provided with a plurality of wear-resistant ceramic pieces 207, and the lower surface of the body of the cutting furnace is provided with a plurality of wear-resistant ceramic pieces. The wear-resistant ceramic wafer is an alumina wear-resistant ceramic wafer and can be fixed on the surface of the upper body of the segmentation hearth in a sticking mode or fixed on the surface of the lower body of the segmentation hearth. The structure has the advantages that only the damaged wear-resistant ceramic wafer can be replaced in the maintenance process, the damage is avoided, the ceramic wafer can be continuously used, and the maintenance cost is further reduced. The outer dimensions of the wear-resistant ceramic sheet in this embodiment are 100 mm long, 50 mm wide and 5 mm thick.

In this embodiment, in consideration of the temperature change of the furnace and the variety change of the raw material coal, a plurality of wear-resistant ceramic plates can be hung on the upper body surface of the segmentation furnace, and a plurality of wear-resistant ceramic plates can be hung on the lower body surface of the segmentation furnace. The wear-resistant ceramic wafer is made of aluminum oxide. The upper body or the lower body of the split hearth is provided with a hanging hole 210, and the inner side of the alumina wear-resistant ceramic 208 is provided with a hook 209. The external dimensions of the wear-resistant ceramic plate are 100 mm long, 50 mm wide and 5 mm thick.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents of the embodiments of the invention may be made without departing from the spirit and scope of the invention, which should be construed as falling within the scope of the claims of the invention.

Claims (4)

1. The utility model provides a multi-unit combination formula gasification furnace body device, includes furnace body top unit, furnace body upper strata unit, furnace body lower floor's unit, furnace body bottom unit, its characterized in that: the furnace body upper layer unit is composed of a plurality of upper cutting units; each upper cutting unit comprises an upper cutting shell, an upper cutting hearth body, an upper pipe row, an upper fiber felt layer and an upper filling layer; the furnace body lower layer unit is composed of a plurality of lower cutting units; each lower cutting unit comprises a lower cutting shell, a lower cutting hearth body, a lower pipe row, a lower fiber felt layer and a lower filling layer; the upper fiber felt layer and the upper filling layer are arranged between the upper cutting shell and the upper cutting hearth body in the upper cutting unit, the upper pipe row is embedded in the upper filling layer, and pipe joints in the upper pipe row are fixedly installed with the upper cutting shell; the lower fiber felt layer and the lower filling layer are arranged between the lower splitting shell and the lower body of the splitting hearth in the lower splitting unit, the lower pipe row is embedded in the lower filling layer, and pipe joints in the lower pipe row are fixedly installed with the lower splitting shell.

2. The multi-unit combined gasification furnace apparatus according to claim 1, wherein: the surface of the upper body of the segmentation hearth is provided with a wear-resistant layer, and the surface of the lower body of the segmentation hearth is provided with a wear-resistant layer.

3. The multi-unit combined gasification furnace apparatus according to claim 1, wherein: the surface of the upper body of the segmentation hearth is provided with a wear-resistant ceramic wafer, and the surface of the lower body of the segmentation hearth is provided with a wear-resistant ceramic wafer.

4. The multi-unit combined gasification furnace apparatus according to claim 1, wherein: wear-resisting ceramic wafers are hung on the surface of the upper body of the segmentation hearth, and wear-resisting ceramic wafers are hung on the surface of the lower body of the segmentation hearth.

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