CN203758278U

CN203758278U - Forced cooling device of graphitization furnace

Info

Publication number: CN203758278U
Application number: CN201420177502.7U
Authority: CN
Inventors: 张茂勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-13
Filing date: 2014-04-13
Publication date: 2014-08-06
Anticipated expiration: 2024-04-13

Abstract

The utility model relates to a forced cooling device of a graphitization furnace and belongs to the fields of graphitization furnaces and industrial waste heat recycling. The forced cooling device of the graphitization furnace can change cooling of the graphitization furnace form a natural mode to a forced mode to greatly reduce the cooling time of the graphitization furnace. The specific structure of the forced cooling device comprises that a coiled tube-type heat exchanger is arranged inside the body of the graphitization furnace, and the heat exchanging structure of the cooling coil tube of the heat exchanger can a single-layer or multi-layer metal tube, which can be distributed along the external wall as well as the bottom of the graphitization furnace in a one-way arranging mode as well as a double-way arranging mode; the air inlet of the cooling coiled tube is connected with an air inlet collecting tube which is connected with a cooling fan, and the air outlet of the cooling coiled tube is connected with an air outlet collecting tube. The novel forced cooling device of the graphitization furnace can reduce the cooling time to 3-5 days and improve the productivity of graphitization products by 50-70%.

Description

A kind of graphitizing furnace forced cooling device

Technical field

The utility model belongs to graphitizing furnace and industrial afterheat recovery is utilized field, particularly a kind of graphitizing furnace forced cooling device.

Background technology

Graphitizing furnace is for the production of special material with carbon element products such as steel-making carbon anode material, cell negative electrode material, carbon fiber, graphite heat conducting material, crucible, carburizer, carbon composites, a common kiln production line comprises multiple identical body of heater unit, the each body of heater of the existing old type of furnace is laterally divided into three layers from outside to inside: the about 0.5m of clay brick exterior wall, the about 0.8m of calcined coke heat-insulation layer, combustion chamber layer is the machined object bed of material and inserts (after-smithing petroleum coke) thereof.Operating process is: shove charge, and---energising heating also---is incubated---cooling---coming out of the stove by more than heating material to 2800 DEG C, the present situation operation cycle is 15～20 days, wherein switches on approximately 2～3 days heat times, is incubated approximately 1～2 day, cooling approximately 8～11 days, come out of the stove, shove charge approximately 2～4 days.Adopt a set of transformer can only heat for a body of heater at every turn, belong to batch operation mode, the wherein about 7000kW of average electrical heating power, every stove power consumption approximately 350,000 kWh, therefore energy consumption is very large, belongs to " three height " industrial department of highly energy-consuming, high pollution, maximum discharge.

The graphitizing furnace type of cooling adopts surrounding air naturally to lower the temperature, consuming time longer.Produce every year on average the special carbon goods of 20 stoves and calculate as comprised 9 bodies of heater, every stove by every production line, every production line adds up to comes out of the stove 180 times, every annual power consumption of production line can reach 6,300 ten thousand kWh, as calculated by 0.9 yuan/kWh of electricity price, amounts to grid electricity fee cost and can reach 5,670 ten thousand yuan.This old graphitizing furnace type of furnace falls behind, and belongs to high energy consumption operating type.

External Japan has developed the graphitizing furnace of novel continuous operation, material to be processed is mobile heating slowly, effectively reducing heat radiation scatters and disappears, the electricity charge are saved, but its problem is that its temperature of charge is the highest can only be heated to approximately 2500 DEG C, do not reach 2800 DEG C of above requirements, make the quality of its converted products and kind not as good as being exactly the static heating type of furnace, therefore not scale popularization in industry.

In sum, this field still can not ensure product high-quality, the type of furnace avoiding expending a large amount of electric power and scatter and disappear a large amount of waste heat energies again at present.

The furnace binding of traditional natural cooling type graphitizing furnace as shown in Figure 1, wherein the cooling procedure of graphitizing furnace relies on naturally cooling between exterior wall outside and ambient air, therefore its cooling velocity reaches more than 8～10 days very slow, cool time, has greatly affected the production capacity of production cycle and production line.

Therefore, be necessary to seek design and the structure thereof of the brand-new graphitizing furnace type of cooling, significantly shorten cool time to reach, improve the object of production line production capacity.

Utility model content

The purpose of this utility model is the weak point for overcoming prior art, a kind of graphitizing furnace forced cooling device is proposed, creatively adopt the special heat-obtaining mode that air-cooling apparatus is set in superhigh temperature body of heater inside, by the type of cooling of graphitizing furnace by the naturally cooling pressure cooling structure that transform as of present situation.

Specific descriptions of the present utility model are: a kind of graphitizing furnace forced cooling device, wherein graphitizing furnace 7 is cuboid furnace type structure, ecto-entad is respectively exterior wall 1, heat-insulation layer 2 and combustion chamber 3, it is characterized in that, described graphitizing furnace forced cooling device is made up of one or more groups high temperature modification cooling coil and blower fan and connecting line, wherein in cooling coil 6, be embedded in heat-insulation layer 2 inside in graphitizing furnace 7, the internal face of close exterior wall 1 is also in a row arranged along short transverse, wherein the air inlet of cooling coil 6 is connected with air intake collector 10, air intake collector 10 is connected with air intake house steward 9, air intake house steward 9 is connected with air intake B by blower fan 8, the air outlet of cooling coil 6 is connected with air-out collector 4, air-out collector 4 is connected with air-out house steward 5, air-out house steward 5 is connected with air-out A.

Near the vertical row of cooling coil 6 each side exterior wall is 1 row or 2 rows, adopts fork row structural configuration in the time being 2 row, adopts stainless pipe structure, and inner heat transferring medium is air or nitrogen.The upper space of the furnace bottom clay brick 11 of graphitizing furnace 7 also can arrange cooling coil 6 if desired, to strengthen cooling effect.

Feature of the present utility model and beneficial effect: adopt the ambient air nature type of cooling to change into adopting original graphitizing furnace and force the type of cooling, thereby significantly shorten cool time, the speed production cycle, improve unit production capacity, expectation can shorten to cool time about 3～5 days, thereby can make the graphitization production cycle shorten to 10～12 days by 15～20 days, can improve production capacity 50%～70%, the Important Techmical Progress with great-leap-forward meaning that belongs to graphitization production field, has important energy-saving benefit and economic benefit.

Brief description of the drawings

Fig. 1 is the traditional graphitizing furnace structural representation that adopts the surrounding air nature type of cooling.

Fig. 2 is the example structure schematic diagram of the graphitizing furnace forced cooling device that adopts of the utility model.

Fig. 3 is the embodiment longitudinal cross-section schematic diagram of the graphitizing furnace forced cooling device that adopts of the utility model.

In Fig. 1,2,3, each unit number and title are as follows.

Exterior wall 1, heat-insulation layer 2, combustion chamber 3, air-out collector 4, air-out house steward 5, cooling coil 6, graphitizing furnace 7, blower fan 8, air intake house steward 9, air intake collector 10, furnace bottom clay brick 11, furnace bottom ventilation slot 12, air-out A, air intake B.

Detailed description of the invention

The graphitizing furnace forced cooling device the utility model proposes, by reference to the accompanying drawings and embodiment describe in detail.

Specific embodiment of the utility model is as follows: novel graphite stove forced cooling device is made up of one or more groups high temperature modification cooling coil and blower fan and connecting line, wherein in cooling coil 6, be embedded in heat-insulation layer 2 inside in graphitizing furnace 7, the internal face of close exterior wall 1 is also in a row arranged along short transverse, wherein the air inlet of cooling coil 6 is connected with air intake collector 10, air intake collector 10 is connected with air intake house steward 9, air intake house steward 9 is connected with air intake B by blower fan 8, the air outlet of cooling coil 6 is connected with air-out collector 4, air-out collector 4 is connected with air-out house steward 5, air-out house steward 5 is connected with air-out A.

Near the vertical row of cooling coil 6 each side exterior wall is 2 rows, adopts fork row structural configuration, adopts stainless pipe structure, and inner heat transferring medium is nitrogen.The upper space of the furnace bottom clay brick 11 of graphitizing furnace 7 also arranges cooling coil 6, to strengthen cooling effect.

It should be noted that; the utility model proposes and adopt the design of High-temperature cooling gas converting heat Pipe bundle structure; and can have different concrete implementing measures according to this design; for example take to bury in various the cast of cooling coil tube bank or adopt heat pipe structure etc., and the embodiment of other similar simple deformation all falls into protection domain of the present utility model.

Claims

1. a graphitizing furnace forced cooling device, wherein graphitizing furnace (7) is cuboid furnace type structure, ecto-entad is respectively exterior wall (1), heat-insulation layer (2) and combustion chamber (3), it is characterized in that, described graphitizing furnace forced cooling device is made up of one or more groups high temperature modification cooling coil and blower fan and connecting line, wherein in cooling coil (6), be embedded in heat-insulation layer (2) inside in graphitizing furnace (7), the internal face of close exterior wall (1) is also in a row arranged along short transverse, wherein the air inlet of cooling coil (6) is connected with air intake collector (10), air intake collector (10) is connected with air intake house steward (9), air intake house steward (9) is connected with air intake (B) by blower fan (8), the air outlet of cooling coil (6) is connected with air-out collector (4), air-out collector (4) is connected with air-out house steward (5), air-out house steward (5) is connected with air-out (A).

2. graphitizing furnace forced cooling device as claimed in claim 1, is characterized in that, near the vertical row of described cooling coil (6) each side exterior wall is 1 row or 2 rows, adopts fork row structural configuration in the time being 2 row.

3. graphitizing furnace forced cooling device as claimed in claim 1, is characterized in that, described cooling coil (6) adopts stainless pipe structure.

4. graphitizing furnace forced cooling device as claimed in claim 1, is characterized in that, the upper space of the furnace bottom clay brick (11) of graphitizing furnace (7) also can arrange cooling coil (6) where necessary.

5. graphitizing furnace forced cooling device as claimed in claim 1, is characterized in that, the inside heat transferring medium of described cooling coil (6) is air or nitrogen.