JP2602761B2 - Coal carbonization furnace - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coal distillation test furnace, and more particularly to a coke oven in which fluctuations in operating conditions and associated carbonization behavior in various types of coal, that is, temperature distribution in the furnace and generated gas outflow are improved. The present invention relates to a coal carbonization furnace capable of accurately reproducing, in an actual furnace, the yield and composition change of each carbonization product in an actual furnace.

[0002]

2. Description of the Related Art Conventionally, a coal carbonization test furnace usually employs a double-sided heating method in order to reproduce the heating conditions of an actual coke oven. There is a disadvantage that the heating / heat transfer phenomenon and generated gas flow phenomenon in the coke oven carbonization chamber cannot be accurately reproduced. Therefore, the test furnace has a problem that the test accuracy is reduced. Therefore, as an improvement of these test furnaces,
No. 99754 and JP-A-62-82356 are known.

[0003] In the above-mentioned Japanese Patent Application Laid-Open No. 58-99754, the raw coal in the dry distillation vessel is brought into contact with the upper heating body to apply a downward one-way heat flow, and the gas generated from the raw coal passes through the coke layer. It is a method for carbonization test of coal discharged from the upper and / or rear side to the outside of the carbonization container.
Further, in Japanese Patent Application Laid-Open No. 62-82356, when performing a carbonization test of coal, a secondary decomposition section for heating gas and tar generated from a coal heating section is provided, and an inert gas is introduced from the outside. The present invention relates to a coal dry distillation test method for adjusting the residence time of a generated gas and tar in a secondary decomposition section.

[0004]

As described above, in the conventional Japanese Patent Application Laid-Open No. 58-99754, heating and carbonization in only one direction is performed, and the carbonization accuracy from the middle to the center of the carbonization chamber is poor. However, there is a disadvantage that it is not possible to reproduce the coal carbonization phenomenon in an actual furnace. Also, Japanese Patent Application Laid-Open
In Japanese Patent No. 82356, the residence time of gas and tar in the secondary cracking furnace is adjusted, and although heating is performed on two sides, independent temperature adjustment and temperature distribution in one direction of the furnace length cannot be performed. There is a problem that it is not enough to reproduce the progress of heating and the gas flow behavior in the actual furnace from the middle to the center of the room.

[0005]

Means for Solving the Problems To solve these problems, the present inventors have made intensive efforts, and as a result, by installing heating surfaces on the bottom and ceiling, the heat compensation has been strengthened, and the uniformity in the carbonization chamber has been improved. It is intended to achieve heating. The gist of the invention is that, in a coal distillation chamber, the heating wall with a built-in heater is placed at the top, furnace bottom, and both sides.
It was placed on the surface as well as on one side or both sides furnace lid, thereby enabling control each of the heating body independently provided origination <br/> raw venting mechanism in the vertical direction and the horizontal direction, heating at an arbitrary position of the carbonization chamber And a coal carbonization furnace characterized in that the progress of carbonization is arbitrarily controlled.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments. FIG. 1 is an overall side view of a coal carbonization furnace according to the present invention. As shown in FIG. 1, a carbonization support in which a support base 1 is installed on a floor surface, and a horizontal detachable furnace lid 2 that can be attached and detached to the upper and lower sides of the support base 1 is attached to a rearrangement furnace wall 3 provided above and below. Form a chamber. A coal charging hopper 4 is provided above the carbonization chamber, and coal is charged from the coal charging hopper 4. In addition, a large number of furnace wall heaters for carbonizing and heating coal in the carbonization chamber are arranged on four surfaces of an upper heater 5, a furnace bottom heater 6, a furnace wall heater 7, and a furnace lid heater 8, The interior of the carbonization chamber is heated at a high temperature by a heating unit in the wall to carbonize. On the other hand, after the generated gas generated from the carbonization chamber is cooled by the generated gas cooling and water transmission sprinkling pipe 11 from the upper generated gas extraction pipe 9 and the generated gas extraction slit 10,
The gas is sent to the horizontally generated gas extraction pipe 12 and discharged from the collecting pipe 13. Reference numeral 14 denotes a coal charging surface.

FIG. 2 is an overall plan view of the coal carbonization furnace according to the present invention shown in FIG. As shown in FIG.
Are provided on both sides thereof with a reassembling furnace wall portion 3.
A large number of furnace wall heaters are incorporated in the rearrangement furnace wall 3, the upper furnace wall and the furnace bottom wall. Reference numeral 15 denotes a gas collecting introduction hole. As described above, in the carbonization furnace of the present invention, by installing heating surfaces on the upper and lower surfaces and both side surfaces and the furnace lid , the thermal compensation is enhanced, and furthermore, by disposing the vertical and horizontal gas extraction pipes, The exhaust gas distribution ratio of the generated gas flow in the carbonization chamber can be controlled by adjusting the vent holes. In addition, the independent temperature control of the generator in each heating wall enables the setting of the temperature distribution in one direction of the furnace length, which is a drawback of the conventional test carbonization furnace. It is possible to reproduce the progress of heating and gas flow behavior with higher accuracy.

FIG. 3 is an explanatory diagram showing the relationship between the actual coke oven carbonization situation and the coal carbonization furnace. FIG. 3A shows a gas flow state in the coal bed 16 in the actual coke oven. By performing the operation, it is possible to simulate the carbonization condition corresponding to the distribution of all parts in the actual coke oven. FIG. 3 (B)
FIG. 3 is a diagram showing the horizontal and vertical temperature distribution and gas outflow distribution of an actual coke oven and a coal carbonization oven corresponding to FIG. 3 (A). Is to simulate

In this way, it is possible to accurately reproduce the progress of the thermal conductivity at an arbitrary position in the actual furnace carbonization chamber and the dry distillation phenomenon such as the flow in the generated gas furnace, and to independently control the heating elements in each heating wall. It can accurately reproduce the effect of the temperature gradient in the furnace length direction during the actual furnace dry distillation and the effect of the temperature change over time due to charging of the adjacent furnace.

[0010]

As described above, according to the present invention, it is possible to accurately reproduce the coal carbonization phenomenon in a small carbonization furnace without conducting a carbonization test with the size of the actual furnace, and to reduce the test cost and the test accuracy. An excellent effect that can achieve a significant improvement is achieved.

[Brief description of the drawings]

FIG. 1 is an overall side view of a coal carbonization furnace according to the present invention.

FIG. 2 is an overall plan view of a coal carbonization furnace according to the present invention.

FIG. 3 is an explanatory diagram showing the relationship between the actual coke oven carbonization situation and the coal carbonization furnace.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 support base 2 horizontal desorption furnace lid 3 rearrangement furnace wall 4 coal charging hopper 5 top heating body 6 furnace bottom heating body 7 furnace wall heating body 8 furnace lid heating body 9 upper generated gas extraction pipe 10 generated gas extraction slit Reference Signs List 11 Sprinkling pipe for water supply 12 Horizontally generated gas extraction pipe 13 Generated gas collecting pipe 14 Coal charging surface 15 Gas collecting and discharging hole 16 Coal bed

Claims (1)

(57) [Claims] In a coal distillation chamber, a heating wall having a built-in heater is provided at an upper portion, a furnace bottom portion, both side surfaces, and both sides or pieces.
Installed on the side furnace lid , each heating element can be controlled independently, and a generated gas release mechanism is provided in the vertical and horizontal directions, and the heating and carbonization progress at any position in the carbonization chamber is arbitrarily controlled. Coal carbonization furnace characterized by the above-mentioned.