CN208620843U - A kind of vertical continuous discharge reduction furnace and waste heat comprehensive utilization system - Google Patents

Abstract

The utility model discloses a kind of vertical continuous discharge reduction furnace and a kind of vertical continuous discharge afterheat of reducing furnace utilization system, and the residual heat integrative for being mainly used for the residual brick raw materials recovery of magnesia-alumina-carbon brick and generation utilizes.Vertical continuous discharge reduction furnace includes furnace shell, the insulating layer being attached within furnace shell, be respectively set with middle part on the top of the furnace shell together with the combustion-supporting pipeline of annular from the air pushing hole being arranged on furnace shell circumference to furnace that blown by, in the lower part of furnace shell, material bearing disc is set；A kind of vertical continuous discharge afterheat of reducing furnace utilization system includes vertical continuous discharge reduction furnace described in claim 1.Can feed the intermittently continuous production that discharges not, thermal energy caused by fixed carbon spontaneous combustion in useless brick and flue dust are sent into hot-air recuperative furnace in reduction process, the cold wind in recuperative furnace is converted into hot wind, the flue dust after heat exchange is recycled waste heat by qualified discharges such as dedustings.

Description

A kind of vertical continuous discharge reduction furnace and waste heat comprehensive utilization system

Technical field

The utility model relates to a kind of residual brick refabrication plants of fire resisting magnalium carbon, again more particularly to the vertical residual brick of magnalium carbon Process continuous discharge reduction furnace and its waste heat comprehensive utilization system.

Background technique

Magnesia-alumina-carbon brick generally uses the materials such as fused magnesite, corundum, graphite and aluminium powder as raw material, then doses organic or nothing Machine bonding agent enters press compression moulding after the techniques such as mixing, is mainly used for smelting, installation furnace is wrapped.These contain carbon brick 30-60% is reached using rear residual brick amount, fixes carbon content between 6~18% in residual brick, the material composition in residual brick needs back It receives and utilizes.Currently available technology handle residual brick and the method that utilizes there are mainly two types of, it is dry one is residual brick is crushed aquation, lack The particle or α-granule that point water wasting and dust polluting environment are formed, regardless of when sizing or indefinite form product, additive amount is lower than 50%；Another kind is that bored firer's skill is ignited spontaneous combustion a kiln or a furnace every time, in another furnace of spontaneous combustion of igniting after complete cooling discharging, this The shortcomings that kind technique is production time length, low output, has impurity in the material after reduction, the waste heat in reduction process fails to obtain benefit With and pollution environment.

Utility model content

One of the technical problems to be solved in the utility model is to provide a kind of vertical continuous discharge reduction furnace；The utility model Another to be solved technical problem is to provide a kind of vertical continuous discharge afterheat of reducing furnace utilization system.

The vertical continuous discharge reduction furnace of the utility model the technical solution adopted is that: a kind of vertical continuous discharge reduction furnace, Including furnace shell, the insulating layer being attached within the furnace shell, the feed opening being set at the top of furnace shell, which is characterized in that described The middle part of furnace shell be respectively set with top together with the annular blown into furnace by the air pushing hole that is arranged on furnace shell circumference it is combustion-supporting Material bearing disc is arranged in the lower part of furnace shell in pipeline, and the material bearing disc stretches out furnace shell in circumferencial direction, and the middle part of the material bearing disc is cone Body, in multiple rows of cooling air inlet hole provided circumferentially about of the side wall of the bullet, the bottom air inlet mouth of the bullet and cold But air piping is connected to cooling blower.

In a kind of preferred embodiment of waste heat comprehensive utilization system provided by the utility model, the steel plate of the furnace shell is thick Degree is 6mm.

In a kind of preferred embodiment of waste heat comprehensive utilization system provided by the utility model, the insulating layer is two layers 7mm antiradiation heat-insulating shield.

The vertical continuous discharge afterheat of reducing furnace utilization system of the utility model the technical solution adopted is that: it is a kind of vertical Continuous discharge afterheat of reducing furnace utilization system, including vertical continuous discharge reduction furnace described in claim 1, the reduction furnace Feed opening by charge pipe connect feed pot, in the middle part of the charge pipe setting braking auxiliary dispenser, the charging of reduction furnace Mouth connects hot wind stove of exchanging by flue, and the hot wind stove of exchanging passes through net hot air pipe and connects heated-air drying kiln, hot wind stove of exchanging Deduster is connected by turbid air hose.

In a kind of preferred embodiment of waste heat comprehensive utilization system provided by the utility model, the reduction furnace is 2.

In a kind of preferred embodiment of waste heat comprehensive utilization system provided by the utility model, the hot wind stove of exchanging is Grid type stove of exchanging.

The beneficial effects of the utility model are: between helping oxygen to add the cooling continuous charging discharging not of bottom using the spontaneous combustion bilayer that ignites Have a rest continuous production, in reduction process will thermal energy caused by fixed carbon spontaneous combustion in useless brick and flue dust be sent into hot-air recuperative furnace after will Cold wind in recuperative furnace is converted into hot wind, and the flue dust after heat exchange is recycled waste heat by qualified discharges such as dedustings.After reduction The complete spontaneous combustion volatilization of organic matter can be added by screening except process such as iron in sizing or indefinite form product in raw material 70-100% reworked material.Due to forming spontaneous combustion using itself carbonaceous component, without auxiliary fuels such as coal, natural gas and heavy oil, mention The high recycling of waste and old resistance to material.The abundant conversion of generated energy during processing, useless smoke waste gas are effectively treated not Environment is polluted, the product 100% after reduction recycles.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings, in which:

Fig. 1 is the waste heat comprehensive utilization system schematic diagram for including reduction furnace sectional view；

Fig. 2 is a kind of waste heat comprehensive utilization system schematic top plan view of embodiment.

Numbering in the drawing indicates:

1- raw material, 2- feed pot, the net hot air pipe of 3-, 4- heated-air drying kiln, 5- hot wind stove of exchanging, 6- deduster, 7- braking Assist dispenser, 8- charge pipe, 9- flue, 10- reduction furnace, 11- furnace shell, the combustion-supporting pipeline of 12- annular, the combustion-supporting pipeline of 13- annular, 14- furnace shell, 15- insulating layer, 16- combustion fan, 17- combustion fan, 18- cooling wind pipeline, 20- bottom air inlet mouth, 21- charging Mouth, the turbid air hose of 22-, 23- cooling blower, 25- dedusting fan, 26- pipeline, 27- bullet

Specific embodiment

Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described Embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.Based on the implementation in the utility model Example, all other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

Refering to Figure 1, the feed opening that vertical continuous discharge reduction furnace 10 includes furnace shell 14, is arranged at the top of furnace shell 21, the insulating layer 15 being attached within the furnace shell 11.The steel plate thickness of the furnace shell 14 is 6mm.The insulating layer 15 is two Layer 7mm antiradiation heat-insulating shield.On the top of the furnace shell 14, setting is sent by the air pushing hole on furnace shell circumference into furnace together The combustion-supporting pipeline 13 of annular of wind, combustion fan 16 connect combustion-supporting pipeline 13.At the middle part of the furnace shell 14, setting is together by setting The combustion-supporting pipeline 12 of annular that the air pushing hole on furnace shell circumference is blown into furnace is set, combustion fan 17 connects combustion-supporting pipeline 12.? Material bearing disc 11 is arranged in the lower part of furnace shell 14, and the material bearing disc 11 stretches out furnace shell 14, the middle part of the material bearing disc 11 in circumferencial direction Bottom air inlet mouth 20 is arranged in middle part for bullet 27, the bottom of the bullet 27, and bottom air inlet mouth 20 passes through cooling duct 18 connect with cooling blower 23, provided circumferentially about multiple rows of uniformly distributed up and down in the tapered sidewalls of the bullet 27 of the material bearing disc 11 Cooling air inlet hole (not shown), the cooling wind that bottom air inlet mouth 20 enters bullet 27 pass through the cooling air inlet of bullet 27 Hole enters in furnace.

It please refers to shown in Fig. 1 and Fig. 2, vertical continuous discharge afterheat of reducing furnace utilization system includes claim 1 institute Vertical continuous discharge reduction furnace 10 is stated, the feed opening 21 of the reduction furnace 10 connects feed pot 2 by charge pipe 8, in charge pipe 8 On setting braking auxiliary dispenser 7.The feed opening 21 of reduction furnace 10 connects hot wind stove of exchanging 5 by flue 9.Feed opening 21 was both It is the import of material and the outlet of flue gas, the hot wind stove of exchanging 5 connects heated-air drying kiln 4, hot wind by net hot air pipe 3 Stove of exchanging 5 connects deduster 6 by turbid air hose 22.Dedusting fan 25 is connect by pipeline 26 with deduster 6.

Reduction furnace 10 can be 2, can be improved production efficiency and makes full use of waste heat.Hot wind stove of exchanging 5 is grid type Stove of exchanging heats cleaned air into the flue gas in furnace, and the clean gas after heating enters heated-air drying kiln, contains dust The foul smell body of grain enters deduster and is purified.

When this vertical continuous discharge afterheat of reducing furnace utilization system works, the material in feed pot 2 passes through charging Pipe 8 reaches the feed opening 21 of reduction furnace 10, and braking auxiliary dispenser 7 is screw feeder, can be fed by screw feeder And improve blockage problem.Raw material 1 in feed pot 2, which enters after combustion-supporting band, makes residual brick spontaneous combustion by the mode of igniting, reduction furnace 10 Bilayer helps oxygen combustion system to make residual brick full combustion.Cooling zone realizes not intermittently charging and the company of discharging using bottom is cooling simultaneously Continuous production.The flue gas that reduction furnace 10 is discharged enters hot wind stove of exchanging 5 by flue 9, and hot wind stove of exchanging 5 is grid type stove of exchanging, Cleaned air is heated into the flue gas in furnace, the clean gas after heating enters heated-air drying kiln, contains the turbid of dust particles Gas enters deduster and is purified.Waste heat can be made full use of, it also being capable of qualified discharge.

The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all Using equivalent structure made by the utility model description or equivalent transformation, it is applied directly or indirectly in other relevant Technical field is also included in the patent protection scope of the utility model.

Claims (6)

1. a kind of vertical continuous discharge reduction furnace, including furnace shell (14), the insulating layer (15) being attached within the furnace shell (14), The feed opening (21) being set at the top of furnace shell, which is characterized in that together with being respectively set at the middle part of the furnace shell (14) with top The combustion-supporting pipeline (12,13) of annular blown by the air pushing hole being arranged on furnace shell circumference into furnace, in the lower part of furnace shell (14) It is arranged material bearing disc (11), the material bearing disc (11) stretches out furnace shell (14) in circumferencial direction, and the middle part of the material bearing disc (11) is cone Body (27), at multiple rows of cooling air inlet hole provided circumferentially about of the side wall of the bullet (27), the bottom of the bullet (27) Portion's air inlet (20) and cooling wind pipeline (18) are connected to cooling blower (23).

2. reduction furnace according to claim 1, which is characterized in that the steel plate thickness of the furnace shell (14) is 6mm.

3. reduction furnace according to claim 1, which is characterized in that the insulating layer (15) is two layers of 7mm antiradiation insulation Plate.

4. a kind of vertical continuous discharge afterheat of reducing furnace utilization system, which is characterized in that including vertical described in claim 1 Continuous discharge reduction furnace (10), the feed opening (21) of the reduction furnace (10) is by charge pipe (8) connection feed pot (2), in institute Setting braking auxiliary dispenser (7) in the middle part of charge pipe (8) is stated, the feed opening (21) of reduction furnace (10) passes through flue (9) connection heat Wind stove of exchanging (5), the hot wind stove of exchanging (5) connect heated-air drying kiln (4) by net hot air pipe (3), and hot wind stove of exchanging (5) is logical Cross turbid air hose (22) connection deduster (6).

5. waste heat comprehensive utilization system according to claim 4, which is characterized in that the reduction furnace (10) is 2.

6. waste heat comprehensive utilization system according to claim 4, which is characterized in that the hot wind stove of exchanging (5) is grid Formula stove of exchanging.