CN215328495U - High-temperature carbonization furnace - Google Patents

Abstract

The utility model discloses a high-temperature carbonization furnace, which comprises a furnace body, wherein a furnace chamber is arranged in the furnace body, an inlet air seal and an outlet air seal are respectively arranged at the left end and the right end of the furnace body, a graphite muffle pipe is arranged in the front section of the furnace chamber, the left end of the graphite muffle pipe is connected with the inlet air seal, a graphite soft felt, a graphite hard felt and a graphite heating plate are sequentially arranged between the inner wall of the furnace chamber and the outer wall of the graphite muffle pipe, a nitrogen inlet nozzle is arranged at the right end of the graphite muffle pipe, a discharge pipe is arranged at the rear section of the furnace chamber, the left end of the discharge pipe is connected with the right end of the graphite muffle pipe, the right end of the discharge pipe is connected with the outlet air seal, a cooling water jacket is arranged on the outer wall of the discharge pipe, and a waste gas exhaust pipe is also arranged on the furnace body. The utility model adopts the structure of the heat-resistant graphite muffle tube, has good heat-resistant effect, and adopts the graphite soft felt and the graphite hard felt outside the muffle tube for heat preservation, thereby having good heat preservation effect.

Description

High-temperature carbonization furnace

Technical Field

The utility model relates to the technical field of high-temperature carbonization of fibers, in particular to a high-temperature carbonization furnace.

Background

The carbonization furnace is mainly used for low-temperature carbonization treatment of pre-oxidized fibers. The pitch-based oxidized fiber produced by the oxidation process enters a low-temperature carbonization furnace. The tow band is passed through a plurality of heating zones in an oven and is progressively heated to a nominal temperature. The existing carbonization furnace has high energy consumption, unattractive appearance, poor heating and heat preservation effect and unstable temperature control.

SUMMERY OF THE UTILITY MODEL

The utility model aims to make up the defects of the prior art and provides a high-temperature carbonization furnace.

The utility model is realized by the following technical scheme:

the utility model provides a high temperature carbide furnace, including the furnace body, at the inside furnace that is equipped with of furnace body, both ends are equipped with import atmoseal and export atmoseal respectively about the furnace body, at the inside graphite muffle pipe that is equipped with of furnace anterior segment, graphite muffle pipe left end with import atmoseal connect, be equipped with graphite soft felt, graphite hard felt and graphite hot plate between furnace inner wall and graphite muffle pipe outer wall in proper order, be equipped with the nitrogen gas suction nozzle at the right-hand member of graphite muffle pipe, be equipped with the discharging pipe at the furnace back end, the discharging pipe left end is connected with graphite muffle pipe right-hand member, the discharging pipe right-hand member with export atmoseal is connected, is equipped with cooling jacket at the discharging pipe outer wall, still is equipped with waste gas exhaust pipe on the furnace body.

And the furnace body is also respectively provided with a nitrogen replacement exhaust pipe and a nitrogen replacement intake pipe which are communicated with the graphite muffle pipe.

The furnace body is also respectively provided with a thermocouple and an extraction electrode which extend into the furnace chamber.

And a furnace body cooling water jacket is arranged outside the furnace body.

The exhaust gas and exhaust pipe number is 2, and the exhaust gas and exhaust pipe number is respectively positioned between the inlet air seal and the left end of the graphite muffle pipe and between the graphite muffle pipe and the outlet air seal.

The left end and the right end of the furnace body are respectively provided with an air suction cover.

The outer wall of the furnace body is provided with a decorative hanging plate.

The utility model has the advantages that: the utility model adopts the structure of the heat-resistant graphite muffle tube, has good heat-resistant effect, adopts the graphite soft felt and the graphite hard felt outside the muffle tube for heat preservation, has good heat preservation effect, is provided with the cooling water jacket outside the furnace body, ensures that the temperature of the furnace body is not overhigh, delays the service life, is heated by the thermocouple, has accurate temperature control and good temperature stability; a special-shaped integral graphite piece is adopted for heating, high-purity nitrogen is used as an auxiliary material, and an inner hearth structure is adopted; the heat insulation material adopts ultra-light material to insulate heat; the temperature control is controlled by an imported single-loop single-point temperature controller, and the temperature control device has the characteristics of high temperature control precision, high temperature stability and the like; the whole energy consumption of the equipment is low, and the appearance is beautiful and tidy. Is ideal equipment for small-scale batch production of enterprises.

Drawings

FIG. 1 is a cross-sectional view of the present invention.

FIG. 2 is a side sectional view of the present invention.

Detailed Description

As shown in fig. 1 and 2, a high-temperature carbonization furnace, including furnace body 1, at the inside furnace that is equipped with of furnace body 1, both ends are equipped with import atmoseal 2 and export atmoseal 3 respectively about furnace body 1, at the inside graphite muffle tube 4 that is equipped with of furnace anterior segment, graphite muffle tube 4 left end with import atmoseal 2 connect, be equipped with graphite soft felt 5, graphite hard felt 6 and graphite hot plate 7 between furnace inner wall and graphite muffle tube 4 outer wall in proper order, be equipped with nitrogen gas inlet nozzle 8 at the right-hand member of graphite muffle tube 4, be equipped with discharging pipe 10 at the furnace back end, discharging pipe 10 left end is connected with graphite muffle tube 4 right-hand member, discharging pipe 10 right-hand member with export atmoseal 3 is connected, is equipped with cooling water jacket 11 at discharging pipe 10 outer wall, still is equipped with waste gas exhaust pipe 12 on the furnace body.

The furnace body 1 is also respectively provided with a nitrogen replacement exhaust pipe 13 and a nitrogen replacement intake pipe 14 which are communicated with the graphite muffle pipe 4.

The furnace body 1 is also respectively provided with a thermocouple 15 and an extraction electrode 16 which extend into the hearth.

A furnace body cooling water jacket 17 is arranged outside the furnace body 1.

The exhaust gas exhaust pipe 12 have 2, be located respectively between import atmoseal 2 and the 4 left ends of graphite muffle pipe and between graphite muffle pipe 4 and export atmoseal 3.

The left end and the right end of the furnace body 1 are respectively provided with an air suction hood 18.

The outer wall of the furnace body 1 is provided with a decorative hanging plate 9.

The technical indexes of the equipment are as follows:

1. the process aims are as follows: high temperature carbonization of fiber (protofilament PAN 12K)

2. Equipment name and model: RTH (G) -200/5 high-temperature carbonization furnace

3. Maximum temperature: 1700 ℃;

4. working temperature: RT-1650 DEG C

5. Temperature control: PID temperature control instrument

6. Temperature control precision: 1 ℃ C. +

7. Furnace temperature uniformity: 3 ℃ C. +

8. Height of fiber bundle from ground: 900mm +/-50 mm

9. The size of the hearth is as follows: 200 (inner) x 120mm (W x H)

10. The size of the furnace mouth is as follows: 200X 50mm (height adjustable)

11. The heating area is long: 3500mm

12. Length of cooling zone: 1750mm (including water cooling and air cooling)

13. Number of temperature zones: zone 5

Heating temperature maximum temperature heating power of heating temperature zone heating length

The first temperature zone is 700mm 1300 ℃ and 1450 ℃ and 32KW

The second temperature zone is 700mm, 1500 ℃ and 1600 ℃ and 30KW

The third temperature zone is 700mm, 1650 ℃, 1700 ℃ and 35KW

The fourth temperature zone is 700mm, 1650 ℃, 1700 ℃ and 35KW

The fifth temperature zone is 700mm, 1650 ℃, 1700 ℃ and 38KW

The adjustable temperature between adjacent heating zones is about 150 DEG C

14. A temperature measuring element: double platinum rhodium thermocouple

15. The heating rate is as follows: 3-5 ℃/min

16. Total heating power: 170KW

17. Surface temperature of the furnace body: less than 45 DEG C

18. The furnace body is sealed and bears the pressure: 0.01MPa

19. The number of layers of traction fibers is as follows: single layer (run 10 bundles of 12K carbon filaments, maximum 12 bundles)

20. Wire moving speed: 1.5 to 3m/min

21. Capacity: 9 to 10 t/year (360d/a,24h/d)

22. The wire threading function: carbon wire reserved in furnace tube

23. External reference dimension: 6980 mm (length, width and height)

24. The size of the control cabinet is as follows: 1000X 600X 2000mm (length X width X height); quantity: 2 table

(including connecting cable wire between control cabinet and carbonization furnace)

25. The main control parameters are as follows:

a) temperature control: PID temperature control instrument

b) Protective gas: the flow is manually adjusted and controlled, and the pressure is displayed;

c) cooling water: the flow is manually adjusted and controlled, and the pressure is displayed; displaying the water temperature; overtemperature alarm

d) In-furnace pressure measurement points: 2 are provided with

1) 1 in the graphite pipe; the pressure in the working furnace is generally 5-10 Pa

2) 1 in the graphite hearth: the pressure in the working furnace is 10-15 Pa

e) A detection device: micro-pressure differential pressure gauge

26. Protective gas: high purity nitrogen (99.9995%) was self-contained.

27. And (3) exhaust emission:

a) number of exhaust gas discharge ports: 2 are provided with

b) Exhaust gas discharge port position: the top between the inlet (outlet) and the inlet (outlet) air seal of the graphite tube

c) Exhaust gas discharge port size: DN25

d) Exhaust gas discharge port temperature: 400 deg.C

e) The exhaust gas discharge interface is connected with an exhaust pipeline of a client

28. An air suction cover:

a)28.1 number of suction hoods: 2 are provided with

b)28.2 suction hood position: above two end faces of the furnace body

c)28.3 air suction temperature of the air suction hood: 60 deg.C

d)28.4 air suction volume: 50m Linked under a speed of h.times.2

e)28.5 the air suction interface is connected with a flue gas pipeline of a client/an induced draft fan is self-provided by the client

29. The device structure form is as follows: skid-mounted integral structure

30. The overhaul period of the equipment: 6-8 months

Working environment of equipment of the utility model

1. Ambient atmospheric pressure of the apparatus: 86.0 to 106.0Kpa

2. Ambient air humidity of the apparatus: < 85% RH

3. Power supply: three-phase five-line, 380V and 50 Hz; recommended connection load 200KVA

4. Nitrogen gas supply pressure: 0.4Mpa

Recommended access nitrogen: 18Nm³/h

Estimation of maximum used nitrogen: 11m³/h

Pipe diameter: DN32 material: 304 stainless steel

The nitrogen temperature requirement is as follows: 10 to 30 DEG C

5. Water supply pressure: 0.2Mpa

Recommending the amount of the water to be added: 12m³/h

Estimating the maximum water consumption: 8m³/h

Cooling water quality: fresh water (deionized water) completely free of salt

Materials: diameter of 304 stainless steel pipe: DN20

The temperature requirement of the supplied water is as follows: 10 to 30 DEG C

6. Emergency backup nitrogen (when the customer cannot guarantee a continuous supply of nitrogen-on a 6 hour basis)

Nitrogen supply pressure 0.2MPa

Nitrogen consumption 60Nm

7. Emergency backup cooling water (required when the continuous supply of cooling water for users is interrupted)

Supply pressure 0.2MPa

The dosage is 36m³

A supply temperature of 10 to 30 DEG C

Cooling water quality: requirement for simultaneous water supply

8. Equipment maintenance space:

upper part: 1.5 m; left and right: 1 m; front and back: 1m, and a solvent.

Claims (6)

1. A high-temperature carbonization furnace is characterized in that: including the furnace body, be equipped with furnace in the furnace body is inside, both ends are equipped with import atmoseal and export atmoseal respectively about the furnace body, at the inside graphite muffle pipe that is equipped with of furnace anterior segment, graphite muffle pipe left end with import atmoseal connect, be equipped with graphite soft felt, graphite hard felt and graphite hot plate between furnace inner wall and graphite muffle outer wall in proper order, be equipped with the nitrogen gas suction nozzle at the right-hand member of graphite muffle pipe, be equipped with the discharging pipe at the furnace back end, the discharging pipe left end is connected with graphite muffle pipe right-hand member, the discharging pipe right-hand member with export atmoseal is connected, is equipped with cooling jacket at the discharging pipe outer wall, still is equipped with exhaust-gas pipe on the furnace body.

2. A high temperature carbonization furnace according to claim 1, characterized in that: and the furnace body is also respectively provided with a nitrogen replacement exhaust pipe and a nitrogen replacement intake pipe which are communicated with the graphite muffle pipe.

3. A high temperature carbonization furnace according to claim 1, characterized in that: the furnace body is also respectively provided with a thermocouple and an extraction electrode which extend into the furnace chamber, and the outside of the furnace body is provided with a furnace body cooling water jacket.

4. A high temperature carbonization furnace according to claim 1, characterized in that: the exhaust gas and exhaust pipe number is 2, and the exhaust gas and exhaust pipe number is respectively positioned between the inlet air seal and the left end of the graphite muffle pipe and between the graphite muffle pipe and the outlet air seal.

5. A high temperature carbonization furnace according to claim 1, characterized in that: the left end and the right end of the furnace body are respectively provided with an air suction cover.

6. A high temperature carbonization furnace according to claim 1, characterized in that: the outer wall of the furnace body is provided with a decorative hanging plate.

Images