JP2002302682A - Char-cooling equipment for gasification facilities - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a char-cooling equipment for gasification facilities, which can prevent bridging of a large mass of char. SOLUTION: In a char-cooling equipment 1b for gasification facilities, which gasifys a carbonaceous material in gasification furnace and a thermal cracking furnace provided therein, separates the gas generated in the gasification furnace and the thermal cracking furnace into a char and a gas at a high temperature in a solid-gas separating equipment, and cool the char thus-separated by heat- transfer tubes 1b arranged in the char-cooling equipment 1, a crusher 3 for crushing a large mass of char is provided above the heat-transfer tubes 1b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a char cooling device for a coal gasification facility that heats, pyrolyzes, and gasifies a raw material such as coal.

[0002]

2. Description of the Related Art A gasification facility is a facility for heating and pyrolyzing a carbonaceous raw material such as pulverized coal and collecting the generated gas for use as an energy source.
-279567.

FIG. 4 is a schematic diagram of a coal gasification facility. Coal gasification equipment mainly consists of gasification furnace 11, pyrolysis furnace 1
2, a slag pot 13, a cyclone 14, a char hopper 2, a char cooling device 1, and a char transport system 15.

FIG. 5 is a sectional view of a conventional char cooling device. The char cooling device 1 includes a casing 1a, a heat transfer tube 1b, a scraper 1c, and a driving cylinder 1d for driving the scraper 1c. Here, the heat transfer tube 1b introduced from outside the casing 1a is
After reciprocating in a, it is arranged so as to come out of the casing 1a again, and cools the char through a refrigerant inside the heat transfer tube 1b.

The char cooling device 1 having such a structure includes:
The high-temperature char separated from the pyrolysis gas in the cyclone 14 is supplied from the char hopper 2 to the upper portion of the char cooling device 1 and absorbs the heat of the char by the heat transfer tube 1b disposed inside the casing 1a. It is led to the char transfer system 15 connected to the lower part.

[0006]

Since a large amount of char is supplied from a char hopper to a char cooling device, a char bridge is formed in the uppermost heat transfer tube, and the amount of char increases. Eventually, a shelving state occurs, and the inside of the char cooling device becomes clogged, which may hinder the circulation of the char.

[0007] Therefore, the present invention provides a char cooling device for gasification equipment, which can prevent shelves from being suspended by large chunks of char.

[0008]

SUMMARY OF THE INVENTION The present invention comprises a gasification furnace and a pyrolysis furnace, gasifies carbonaceous material, and converts a gas generated in the gasification furnace and the pyrolysis furnace to a solid-gas separation at a high temperature. In the char cooling device of the gasification facility, the char is separated into char and gas, and the separated char is cooled by the heat transfer tube arranged in the char cooling device. Machine is provided. As the crusher, a reciprocating crusher can be provided. Also,
At the lower part of the crusher, a perforated plate having an opening equal to or less than the heat transfer tube gap may be provided.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, a crusher crushes a large lump of char above a heat transfer tube, and the crushed char falls through a gap between the heat transfer tubes. Can be.

[0010]

FIG. 1 is a sectional view showing an embodiment of the present invention. The upper portion of the char cooling device 1 is connected to a char hopper 2. A heat transfer tube 1b introduced from the outside of the casing 1a is arranged in the char cooling device 1 so as to reciprocate in the casing 1a and then out of the casing 1a again. Cool the char.

A reciprocating crusher 3 is arranged in an upper space in the char cooling device 1. The crusher 3 includes a pair of opposed press plates 3a for pressing a large lump of char from both sides and a cylinder 3b for reciprocating the respective press plates 3a, which is provided outside the casing 1a. .

FIG. 2 is a view showing a perforated plate provided below the press plate. FIG. 2 (a) is a plan view of an example using a punching metal, FIG. 2 (b) is a longitudinal sectional view thereof, and FIG. () Is a plan view of an example using a grating, and (d) is a longitudinal sectional view of the same.

2 (a) and 2 (b), a perforated plate 4 made of punching metal provided with a number of holes 4a for receiving char supplied from the char hopper 2 is provided below the press plate 3a. The press plates 3 a are arranged and reciprocate on the perforated plate 4.

The char supplied from the char hopper 2 onto the perforated plate 4 falls through the hole 4a toward the heat transfer tube 1b due to the reciprocating motion of the press plate 3a, and a large lump of char is sandwiched between the press plate 3a. Crushed and fall through the hole 4a toward the heat transfer tube 1b.

In the embodiment shown in FIGS. 2C and 2D,
Using a perforated plate 4 using a grating, the char supplied from the char hopper 2 onto the perforated plate 4 is moved toward the heat transfer tube 1b through the lattice gap 4b by the reciprocating motion of the press plate 3a. After falling, a large lump of char is crushed by being sandwiched between the press plates 3a, and the gap 4
b and falls toward the heat transfer tube 1b.

FIG. 3 is a cross-sectional view showing another embodiment of the present invention. In this embodiment, the crusher 3 is arranged on the upper outside of the char cooling device 1. By providing the crusher 3 outside the char cooling device 1, the conventional char cooling device 1
The crusher 3 can be easily added.

[0017]

According to the present invention, even if a large chunk of char is supplied from the char hopper to the char cooling device by the crusher, the large chunk of char is crushed and a char bridge is not formed in the uppermost heat transfer tube. As a result, it is possible to prevent hanging from occurring.

[Brief description of the drawings]

FIG. 1 is a sectional view showing one embodiment of the present invention.

FIGS. 2A and 2B are views showing a perforated plate, FIG. 2A is a plan view of an example using punched metal, FIG. 2B is a longitudinal sectional view of the example, FIG. 2C is a plan view of an example using a grating,
(D) is the same longitudinal sectional view.

FIG. 3 is a sectional view showing another embodiment of the present invention.

FIG. 4 is a schematic diagram of a coal gasification facility.

FIG. 5 shows a sectional view of a conventional char cooling device.

[Explanation of symbols]

 1: Char cooling device 1a: Casing 1b: Heat transfer tube 1c: Scraper 1d: Drive cylinder 2: Char hopper 3: Crusher 3a: Press plate 3b: Cylinder 4: Perforated plate 4a: Hole 4b: Grating gap 11: Gas Gasifier 12: Pyrolysis furnace 13: Slag pot 14: Cyclone 15: Char transfer system

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) C10J 3/46 C10J 3/46 JKM 3/54 3/54 JK (71) Applicant 000004123 Nippon Kokan 1-21-2 Marunouchi, Chiyoda-ku, Tokyo, Japan (71) Applicant 000001199 Kobe Steel, Ltd. 2-26-10, Wakihama-cho, Chuo-ku, Kobe-shi, Hyogo (72) Inventor Atsushi Fujikawa Tobata-ku, Kitakyushu Nakahara 46-59 Nippon Steel Corporation Engineering Business Headquarters (72) Inventor Tatsuhiko Ega 46-59 Nakahara, Tobata-ku, Kitakyushu City Nippon Steel Corporation Engineering Business Headquarters F-term (reference) 4D063 AA01 GA08 GC17 4D067 EE13 EE17 GA04 GB10

Claims (3)

[Claims] A gasification furnace and a pyrolysis furnace are provided, a carbonaceous material is gasified, and a gas generated in the gasification furnace and the pyrolysis furnace is separated into a char and a gas by a solid-gas separation device at a high temperature. In the char cooling device of the gasification facility, wherein the separated char is cooled by a heat transfer tube arranged in the char cooling device, a crusher for crushing a large lump of char is provided above the heat transfer tube. Char cooling device. 2. The apparatus according to claim 1, further comprising a reciprocating crusher. 3. The char cooling device according to claim 1, wherein a perforated plate having an opening equal to or less than the gap of the heat transfer tube is provided below the crusher.