CN2054162U

CN2054162U - Multi-layer composite refractory insulation structure for industrial kiln and furnace lining

Info

Publication number: CN2054162U
Application number: CN 89211346
Authority: CN
Inventors: 奚同庚; 李明华; 黄光忠; 倪鹤林; 谷华森; 王贞尧; 朱大震; 段炼; 高永根; 王圣妹; 李兆和; 陆燕静; 陶士均; 章宗德; 许金林; 孟梅芳; 密崇林; 张永昌
Original assignee: No1 Chemical Plant Of Refinery Department Of Shanghai General Petrochemical Works; Shanghai Institute of Ceramics of CAS
Current assignee: No1 Chemical Plant Of Refinery Department Of Shanghai General Petrochemical Works; Shanghai Institute of Ceramics of CAS
Priority date: 1989-01-07
Filing date: 1989-01-07
Publication date: 1990-03-07

Abstract

The utility model discloses a multi-layer composite refractory insulation structure for industrial kiln and furnace lining, which belongs to the technique of thermal insulation, energy conservation, and heat preservation. The multi-layer composite refractory insulation structure for industrial kiln and furnace lining is well designed by using the principle of optimum economy thickness; the inner layer is light-weight refractory brick; the middle layer is aluminum silicate fiber blanket; the outer layer is soft and hard multi-layer composite refractory material with shock resistance performance composed of rock wool felt instead of damageable depositing concrete; small lightweight staples are used for replacing heavy hooks of steel column types to fix the refractory brick. The use of novel, light-weight, and high-strength steel plate of brick can save steel material, reduce short-circuit phenomenon, enhance heat-insulating effect, and reduce the surface heat loss of the furnace lining. The actual use effect of the utility model shows that the surface heat loss of the furnace lining falls about 40 %, the energy utilization of the kiln is enhanced, and the utility model reaches the heat insulating and energy saving level of international advanced countries.

Description

Multi-layer composite refractory insulation structure for industrial kiln and furnace lining

The utility model relates to the heating class, is the equipment and the annex of more than one stoves, kiln, particularly relates to a kind of long-time running Industrial Stoves furnace wall, and oil ethene splits the energy-conservation multilayer composite heat insulating structure of Jie's stove furnace wall fire resistant heat preserving.

Existing conventional Industrial Stoves furnace wall generally adopts the outer common brick of building of inner lining refractory block (lightweight or heavy), and is middle or be lined with thickness and do not wait aluminum silicate fiber, and its heat insulation effect is relatively poor, and energy consumption is bigger.In national petrochemical industry, have about 200 large-scale petroleum ethene and split the furnace wall that Jie's stove all adopts early seventies Mitsubishi Co., Ltd. patent (the clear 47-44139 of Japan's special permission), this structure liner light fire brick, exterior wall is the steel plate furnace shell, and middle lining is with the iron wire grid and pour into cast concrete.It is very easily broken to split the cast concrete that plays main thermal insulation layer effect under Jie's furnace superintendent phase use pulsation situation at oil ethene, and the not good insulation of wall performance of original heat insulation effect is reduced, and energy consumption increases.For increasing the heat preservation energy-saving performance, be to increase insulation layer thickness to the common way of conventional Industrial Stoves furnace wall.But it is infeasible that oil ethene is split Jie's stove furnace wall.Because of oil ethene splits Jie's stove outer covering is the steel plate structure of fixing, and increases insulation layer thickness and certainly will reduce the effective dimensions of splitting in Jie's stove, and the normal operating conditions of Jie's stove is split in influence.Unique effective ways are the insulating structures that adopt the compound furnace wall of a kind of novel multi-layer.

The purpose of this utility model provides a kind of MULTILAYER COMPOSITE fire resistant heat preserving structure that large-scale petroleum ethene that existing petrochemical industry has in a large number splits Jie's stove and Industrial Stoves furnace wall commonly used of improving, in order to overcome the shortcoming of stove at present commonly used, kiln insulating structure, improve thermal insulation property, cut down the consumption of energy.

Major technique content of the present utility model: the steel column (the general industry kiln does not have this necessity) of removing the Φ 20mm of former promising fixedly light fire brick in splitting Jie's stove steel plate furnace shell makes thin bail, card cap and refractory brick fixed structure into; Holder brick steel plate in height spacing every about 1.2 meters is opened 900 * 75-77mm quadrilateral hole; Pressing its refractory insulating layer of kiln operating conditions is made up of soft, the hard material of different optimal economic thickness.Skin is soft mineral wool felt, and the middle level is soft alumina silicate fiber felt, and internal layer is a high alumina hard refractory brick.

The utility model can make every kind (every layer) fire-resistant (or insulation) material bring into play optimum performance separately in only temperature range, reduces surperficial heat waste most effectively, improves the thermal insulation property of furnace wall and the insulation life-span of increase furnace wall.Make and split Jie's stove (or industry kiln, stove) and be in reasonably operating conditions, help improving productive rate.Because this structure can reduce hot short circuit and heat load effectively, prevent the breakage of thermal insulation layer, and under the condition that does not increase original insulation layer thickness, economic optimum Match MULTILAYER COMPOSITE layer is provided, and the energy saving economy benefit that makes the furnace wall heat waste reduce 40-50% is relatively arranged.In addition, the utility model is not only applicable to oil ethene and splits Jie's stove, is applicable to the outer Industrial Stoves that steel plate is a furnace shell that protect yet.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.

Total Fig. 1 is according to the industry kiln furnace wall MULTILAYER COMPOSITE fire resistant heat preserving structural representation that the utility model proposes.

Diagrammatic sketch 1(a) holder brick steel plate structure schematic representation

Diagrammatic sketch 1(b) hollow out holder brick steel plate structure

Diagrammatic sketch 2(a) fixed structure of MULTILAYER COMPOSITE refractory insulating layer

Diagrammatic sketch 2(b) bail, card cap part figure in addition

Diagrammatic sketch 2(c) fixing light fire brick (12) structural drawing of former pillar

Other component names of each label shown in diagrammatic sketch 1 and the diagrammatic sketch 2 is as follows: furnace shell steel plate (1); Point is welded in (1) inboard bail (2); Insulation mineral wool felt (3) and alumina silicate fiber felt (4); The fixing stay hook (5) of light fire brick (7); Fix the card cap (6) of (5), for bearing the holder brick steel plate (9) of refractory brick loading; Be to reduce the hot short circuit hollow out quadrilateral hole (8) of (9), the area of (8) accounts for the 30-60% of the area of holder brick steel plate (9), adds the soft aluminosilicate fiber cotton (10) filled out as the furnace wall dilatation joint for reducing crack heat waste between (7) (9); In conjunction with practical example, with the optimum Match MULTILAYER COMPOSITE fire resistant heat preserving structure (11) that computer is optimized, its internal layer is the alumina firebrick of hard light weight, and the middle level is soft alumina silicate fiber felt, and skin is soft mineral wool felt; To old furnace modification, should remove diagrammatic sketch 2(c) the fixing light-weight refractory brick structure (12) (spacing of spot welding bail ［ 2 ］ is about 0.5 meter) of the heavy pillar of former benzene.

Describe details and installation procedure in detail below in conjunction with total Fig. 1 according to the furnace wall MULTILAYER COMPOSITE fire resistant heat preserving structure that the utility model proposes.

Stove outer covering steel plate ［ 1 ］ inboard every 1.2 meters between left and right apart from spot welding bail ［ 2 ］, with soft mineral wool felt ［ 3 ］, alumina silicate fiber felt ［ 4 ］ fissure of displacement is affixed to steel plate as the furnace wall inner lining as thermal insulation material, puts the stay hook ［ 5 ］ of light fire brick, presses card cap ［ 6 ］.Fixedly the bail structure of refractory brick is assemblied through machinery by bail ［ 2 ］, refractory brick stay hook ［ 5 ］ and card cap ［ 6 ］.Brickwork requires hard type lightweight refractory brick ［ 7 ］ is piled up at the holder brick steel plate ［ 9 ］ of engraving hole ［ 8 ］ successively routinely, and till the holder brick steel plate ［ 9 ］ of building last layer, embedding and jam-pack aluminosilicate fiber cotton ［ 10 ］ should be filled out as dilatation joint in its gap.Operating mode by Industrial Stoves (or splitting Jie's stove), to constitute by three layers (or multilayers) through the MULTILAYER COMPOSITE refractory insulating layer ［ 11 ］ that the optimal economic thickness after the optimal design constitutes, its internal layer is a hard type light fire brick ［ 7 ］, the middle level is soft alumina silicate fiber felt ［ 4 ］, and skin is that soft mineral wool felt ［ 3 ］ is formed.

Claims

1, a kind of industry kiln furnace wall MULTILAYER COMPOSITE fire resistant heat preserving structure comprises furnace shell steel plate [1], holder brick steel plate [9], it is characterized in that:

A, furnace shell steel plate [1] inboard every 0.5 meter between left and right apart from spot welding bail [2], it is the furnace wall inner lining as thermal insulation material that mineral wool felt [3], alumina silicate fiber felt [4] fissure of displacement are affixed to steel plate [1], put light fire brick stay hook [5], press card cap [6], light fire brick [7] is piled up engraving on the holder brick steel plate [9] in hole [8] successively, till the holder brick steel plate of building last layer, its gap is as dilatation joint, in fill out embedding and jam-pack aluminosilicate fiber cotton [10];

B, MULTILAYER COMPOSITE refractory insulating layer [11] are made of three layers (or multilayers), and wherein each layer is:

Internal layer: hard light weight fireproof insulation brick [7]

Middle level: soft alumina silicate fiber felt [4]

Outer: soft mineral wool felt [3].

2, according to the insulating structure of claim 1, it is characterized in that:

A, engrave hole ［ 8 ］ for quadrilateral;

B, the area of engraving hole ［ 8 ］ account for 30～60% of former holder brick steel plate ［ 9 ］ area.

3, according to the insulating structure of claim 1, it is characterized in that:

Fixedly the bail structure of light fire brick is by bail ［ 2 ］, and refractory brick stay hook ［ 5 ］ blocks cap ［ 6 ］ and assemblies through machinery.