CN219586047U - SJ low-temperature carbonization Fang Lu with top gas detection and replacement device - Google Patents

Abstract

The utility model discloses an SJ low-temperature carbonization Fang Lu with a furnace top gas detection and replacement device, wherein a through hole is formed in a furnace top cover of a square furnace body, the furnace top gas detection and replacement device comprises a steel pipe with one end embedded into the through hole, a water seal groove is formed in the other end of the steel pipe, a water seal is arranged in the water seal groove, a gas detector is arranged in the steel pipe close to the water seal, and an electromagnetic valve is arranged on the side surface of the steel pipe; the gas detector is electrically connected with the signal input end of the PLC, and the signal output end of the PLC is electrically connected with the gas alarm and the electromagnetic valve respectively. Through the gas detection replacement device, the residual poisonous combustible gas is completely discharged, so that the poisonous combustible gas in the furnace is fully replaced and overhauled, and the potential safety hazards that the gas leakage and the overhauling personnel inhale the poisonous combustible gas to influence the health when the manhole cover is manually opened for overhauling are greatly eliminated.

Description

SJ low-temperature carbonization Fang Lu with top gas detection and replacement device

Technical Field

The utility model relates to the field of low-temperature carbonization equipment, in particular to an SJ low-temperature carbonization Fang Lu with a top gas detection and replacement device.

Background

The carbonization of coal refers to the adoption of lower heating final temperature, so that the coal is heated and decomposed to generate semicoke, low-temperature coal tar, coal gas and pyrolysis water under the condition of isolating air. The equipment for low temperature retorting is called a low temperature retorting furnace. The low-temperature carbonization furnace is mainly divided into: SJ low-temperature carbonization square furnace, TDM sectional type lump coal low-temperature carbonization furnace and ZDM low-temperature carbonization furnace. The SJ low-temperature carbonization square furnace has the characteristics of uniform material drop, uniform distribution, uniform gas distribution, uniform heating and the like, and really realizes low-temperature carbonization of coal. And the effective volume of the coke oven of the SJ low-temperature carbonization furnace is larger, the processing capacity of the coke oven per unit volume and unit section is higher, the tar yield of dry-basis raw coal can reach more than 7%, the light component of the tar is increased, and the economic value of the tar is improved.

The SJ low-temperature carbonization square furnace needs to be overhauled regularly, the overhauling time is generally fixed after the furnace is shut down, the current overhauling method is that operators manually open an overhauling hole at the top of the furnace to enter the furnace for overhauling after the temperature in the furnace is reduced to a safe and specified range, but the method has the following defects: (1) Whether the residual toxic combustible gas at the furnace top is completely emptied cannot be guaranteed, and the potential safety hazard of toxic combustible gas leakage is provided; (2) In the process of overhauling by opening the manhole cover by an overhauling person, toxic gas is highly likely to be inhaled, the safety risk is high, and the long-time work can cause great influence on the health of the overhauling person; (3) When the SJ low-temperature carbonization Fang Lu on the production line is more, the one-to-one manual emptying can greatly reduce the overhaul efficiency and prolong the overhaul period.

Disclosure of Invention

The utility model provides an SJ low-temperature carbonization furnace with a furnace top gas detection and replacement device, and aims to solve the problems of high safety risk and low overhaul efficiency of the existing overhaul method.

The utility model relates to an SJ low-temperature carbonization furnace with a furnace top gas detection and replacement device, which comprises a Fang Lu body, wherein a furnace top cover is arranged at the top of the furnace body, a through hole is formed in the furnace top cover, the furnace top gas detection and replacement device comprises a steel pipe with one end embedded into the through hole, a water seal groove is formed in the other end of the steel pipe, a water seal is arranged in the water seal groove, a gas detector is arranged in the steel pipe close to the water seal, and an electromagnetic valve is arranged on the side surface of the steel pipe; the gas detector is electrically connected with the signal input end of the PLC, and the signal output end of the PLC is electrically connected with the gas alarm and the electromagnetic valve respectively.

Preferably, the solenoid valve is connected to the steel pipe by a flange.

Preferably, the height of the water seal is 100-150mm.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the SJ low-temperature carbonization Fang Lu with the top gas detection and replacement device, the gas detection and replacement device is arranged on the top of the furnace, so that the residual toxic combustible gas is completely discharged, and the toxic combustible gas in the furnace is fully replaced and overhauled, so that the potential safety hazards of gas leakage and toxic combustible gas inhalation by overhaulers when a manhole cover is manually opened for overhauling are greatly eliminated.

2. The SJ low-temperature carbonization Fang Lu with the furnace top gas detection and replacement device provided by the utility model detects the concentration of toxic combustible gas in the furnace through the gas detector, and then feeds back signals to the PLC, and the PLC receives the signals to control the electromagnetic valve and the gas alarm to work, so that the overhaul process is safe and intelligent, efficient and convenient, and the overhaul efficiency is greatly improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an SJ low-temperature carbonization furnace with a furnace top gas detection and replacement device;

in the figure: 1-a square furnace body; 2-furnace top cover; 3-through holes; 4-a steel pipe; 5-flanges; 6-an electromagnetic valve; 7-water seal.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

as shown in figure 1, the utility model is a SJ low-temperature carbonization square furnace with a furnace top gas detection and replacement device, comprising a square furnace body 1, wherein the top of the square furnace body 1 is provided with a furnace top cover 2 with the diameter of 800mm, the furnace top cover 2 is provided with a through hole 3 with the diameter of 200mm, the furnace top gas detection and replacement device comprises a steel pipe 4 with one end embedded into the through hole 3, the diameter of the steel pipe 4 is 200mm, the height is 500mm, the joint of the through hole 3 and the steel pipe 4 is welded and fixed, the 100mm position of the other end of the steel pipe 4 is provided with a water seal groove, the water seal groove is internally provided with a water seal 7 with the height of 100mm, a DR-TC 100 type gas detector is arranged in the steel pipe 4 close to the water seal 7, and the side surface of the steel pipe 4 is connected with an electromagnetic valve 6 through a flange 5; the DR-TC 100 type gas detector is electrically connected with a signal input end of the PLC, and a signal output end of the PLC is electrically connected with the DR-RTP 600 type gas alarm and the electromagnetic valve 6 respectively.

This time overhauls 8 SJ low temperature carbonization Fang Lu on a certain production line, before overhauling, draws the semicoke in each square furnace body 1 to empty to the water seal 7 in the water seal groove, make the air get into in the square furnace body 1 from leading burnt mouth, slowly cool down square furnace body 1. In the cooling process, the DR-TC 100 type gas detector in the steel pipe 4 detects that toxic combustible gas still remains in the square furnace body 1, so that signals are fed back to the PLC programmable controller, the PLC programmable controller receives the signals to start the DR-RTP 600 type gas alarm to warn, the overhauling personnel is reminded to suspend overhauling operation, the electromagnetic valve 6 is opened to exhaust, after 15 minutes of exhaust, the DR-TC 100 type gas detector does not detect toxic combustible gas, signals are fed back to the PLC programmable controller, the PLC programmable controller receives the signals to close the DR-RTP 600 type gas alarm, the overhauling personnel is reminded to start overhauling operation, and the electromagnetic valve 6 is closed. At this time, an operator manually opens the manhole cover of the square furnace body 1 and enters the square furnace body 1 to carry out maintenance operation, so that the square furnace is safe and convenient. The device plays a very good role in the maintenance work of 8 SJ low-temperature carbonization square furnaces, has obvious effect, realizes the aim of automatic detection and control, greatly improves the maintenance efficiency, shortens the maintenance period, effectively eliminates the potential safety hazards that the gas leakage and the maintenance personnel inhale toxic combustible gas to influence the health when the maintenance personnel trade and open the manhole cover manually for maintenance, and is safe and reliable and can be widely popularized and used.

Claims (3)

1. The utility model provides a SJ low temperature carbonization side's stove with top gas detects replacement device, includes side's stove body (1), fang Lu body (1) top is equipped with stove top cap (2), its characterized in that: the furnace top cover (2) is provided with a through hole (3), the furnace top gas detection and replacement device comprises a steel pipe (4) with one end embedded into the through hole (3), a water seal groove is formed in the other end of the steel pipe (4), a water seal (7) is arranged in the water seal groove, a gas detector is arranged in the steel pipe (4) close to the water seal (7), and an electromagnetic valve (6) is arranged on the side face of the steel pipe (4); the gas detector is electrically connected with the signal input end of the PLC, and the signal output end of the PLC is electrically connected with the gas alarm and the electromagnetic valve (6) respectively.

2. A SJ cryogenic retorting Fang Lu with top gas detection displacement device as claimed in claim 1, wherein: the electromagnetic valve (6) is connected to the steel pipe (4) through a flange (5).

3. SJ cryogenic retorting Fang Lu with top gas detection displacement device as claimed in claim 1 or 2, characterized in that: the height of the water seal (7) is 100-150mm.