JPS6172092A - Facility for dry-quenching of red heated coke - Google Patents

Abstract

PURPOSE:To reduce the initial and running costs, and to enable the safe and continuous operation of a dry-quenching process, by introducing excess gas discharged from the incombustible circulation line into a red heated coke hopper. CONSTITUTION:Red heated coke is supplied from the hopper 2 to the grate in the quenching chambers 6, 6' and 6'', and quenched and cooled by incombustible circulation gas in the course of being transferred on the grate. In the above dry-quenching facility, at least a part of the excess gas discharged from the incombustible circulation line to outer atmosphere is introduced into the hopper 2 through the incombustible gas supply line 23 to dilute the combustible gas generated from the red heated coke in the hopper.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is a system for extinguishing and cooling red-hot coke by circulating non-flammable gas, which is supplied from a red-hot coke charging hopper onto a grate in a cooling chamber and moves on the grate. This relates to the improvement of red-hot coke dry extinguishing equipment.

(Prior Art) To explain the conventional circular grate type red hot coke dry extinguishing equipment with reference to Figs. 2 and 3, red hot coke (1) is charged into a cooling room divided into about 3 to 5 rooms from a red hot coke charging chamber 2). The red-hot coke (
1) is cooled down to below the ignition temperature using non-flammable gas, and the high-temperature non-flammable gas obtained by the same heat exchange is guided to the waste heat boiler Uυ to obtain steam or generate electricity. ing. In this red hot coke dry extinguishing equipment, during normal operation, a predetermined amount of red hot coke is pumped into a red hot coke charging hopper (2
). However, red-hot coke contains flammable gases such as unloaded fractions of hydrogen gas (hereinafter referred to as H2 gas) and -carbon oxide gas (hereinafter referred to as 0 gas) (this combustible gas is H,2-)-Co). i occurs. This generated flammable gas accumulates in the hopper (2), and when the charging hopper (2) is opened during the charging of coke, it mixes with oxygen in the air and causes an explosion. To prevent hopper 1
2) It is necessary to treat the combustible gas generated inside with non-flammable gas. Therefore, in the past, inert gas such as nitrogen gas was piped into the hopper (2) so that the concentration of flammable gas in the hopper (2) was below the gas explosion range, as shown in Figure 3. At the same time, the generated flammable gas was released through the pipe Ca1l.

(Problem to be solved by the invention) In the red-hot coke dry extinguishing equipment shown in Fig. 3 above.

fl) Running costs increase due to the use of specially prepared inert gas such as N2 gas. (By introducing the inert gas, the pressure inside the hopper (2) increases, and some flammable gas along with the inert gas flows into the cooling chamber (
6), making the atmosphere in the body circulation system flammable.

Therefore, a catalytic reactor 0I is installed and air is piped (9)
The combustible gas in the circulating gas (5) is burned and extinguished. In stool, all the am gas undergoes a catalytic reaction 5 (
It is necessary to follow the IOl, which shortens the life of the catalyst and increases running costs. This problem happened very often.

(Means for Solving the Problems) The present invention addresses the above-mentioned problems, and provides a method for circulating non-combustible coke that is supplied from a red-hot coke charging hopper onto a grate in a cooling chamber and moves on the grate. In a red-hot coke dry extinguishing system that extinguishes and cools with hot gas, all or a portion of the excess gas released into the atmosphere from the non-flammable circulation line is guided to the red-hot coke charging hopper to remove the red-hot coke in the same hopper. The present invention relates to a red-hot coke dry extinguishing equipment characterized by being equipped with a non-flammable gas supply line T- for diluting generated flammable gas, and its purpose is to reduce initial costs and running costs. It will also provide improved red-hot coke dry fire extinguishing equipment that will allow operations to continue safely.

(Example) Next, the red-hot coke dry extinguishing equipment of the present invention will be explained using an example shown in FIG.
2) is the red hot coke charging hopper, (3) is the red hot coke charging horanomiji, (4) is the grate (bullet)
, (5) (s') (5") is inert gas (cooling gas), N61 (6') (6 is cooling room and wind box, (
Force (7') (7 is inert gas feed IN!, <, Hl
(8) is the cyclone, (Iυ is the waste heat boiler, Q2+ is the purge gas line, Q]) is the purge gas line, (22 is the blower for air blowing,
Inert gas supply line (dilution line) for flammable gas purge
, θp is the discharged coke (cold coke), (241 is the turbine and generator, (c) is the return pipe, and as mentioned above, there are 6 cooling chambers → return pipe (251 → blower (7') → Cooling room (6') → return pipe α1 → blowing rock + 71 - cooling room/to) → waste heat boiler αυ → cyclone (8) → blower (7) → cooling room (from 6 inert gas circulation fins) 2 - An inert gas supply fin that exclusively dilutes the combustible gas from within the same hopper (2) by directing all or part of the excess gas released into the atmosphere via the digital gas line tta to the red-hot coke charging honono 2). (It has 231.

(Function) The operation of the red-hot cox dry fire extinguishing equipment will be briefly explained. Red-hot coke charging popper (2) lid (3)
Fully open and charge red hot coke into the same hopper (2).

This red-hot coke (1) travels to the cooling chamber 16) on a pallet (4). On the other hand, cooling chamber 16) (6')
(The cooling gas (5) (5') (5') is circulated through the blower (power (7') (7') and the red hot coke and the cooling gas are As a result, heat exchange takes place between them, the coke is sequentially cooled, and the cooling gas is heated.

At this time, flammable gas (N2.CO) of undried distillate is generated from the red hot coke on the m circular grate. (1
1) CO gas according to the following reaction formula is generated by the reaction between red-hot coke and cooling gas.

C (coke) + 02 (oxygen in cooling gas) = co2
... ■C (coke) + C0z (C generated in the above formula
02) = CO... 0 songs) A water seal device is installed between the inside and outside of the cooling chamber, and the water vapor evaporated from the seal water of this water seal device reacts with the CO gas in the cooling gas.
N2 gas is generated.

HzO+Co=)h+C02・・・・・・・
・・・・・・・・・－・・・・・・■ Due to the reactions of the above formulas 1 to 2, flammable gases such as H2 and CO increase in the circulating cooling gas. If this combustible gas exceeds a certain concentration, there is a risk of explosion due to contact with air, so air is blown into the cooling gas through a blower.
H2+-02 (oxygen in the air) = H20...
・・■ Burn H2 and CO to produce H2O and CO2,
Inert the circulating cooling gas. However, when air is blown into the circulating cooling gas, the capacity of the circulating cooling gas increases, so a part of the inert circulating gas (cooling gas) after heat exchange in the waste heat boiler Uυ is transferred to the purge line t121.
need to be purged from. conventionally.

The entire amount of this cold air was purged into the atmosphere, but in the present invention, the whole or part of this inert cold air is passed through the inert gas supply line (c) to the red hot coke charging hopper (2).
) and dilute the flammable gas (H2, CO gas) generated from red-hot coke in the same hopper (2).
This diluted gas is released into the atmosphere through a purge line. Conventionally, as shown in Figure 3, nitrogen gas was blown into the hopper (2) in order to dilute the combustible gas generated from the red hot coke in the red hot coke charger (2) and release it into the atmosphere. However, in the present invention, the circulating inert gas that was released into the atmosphere is used to purge the flammable gas in the red-hot coke charging hopper (2). becomes completely unnecessary. In addition, air is blown into the circulating cooling gas to promote the action of the above formula.
Therefore, the concentration of flammable gas in the circulating cooling gas is always kept below the explosion limit, and the catalyst for flammable gas combustion shown in FIG. 3 is completely unnecessary. As described above, inert gas r is introduced into the coke charging hopper (2) and
) by purging the flammable gas generated in the red-hot coke charging hopper (2) into the atmosphere, the concentration of flammable gas in the red-hot coke charging hopper (2) is brought below the explosion limit within a predetermined time. Even if the lid (3) is opened from time to time, no explosion will occur and the operation can be continued safely.

(Effects of the Invention) The present invention has the advantage of circulating nonflammable gas & (more extinguishing and cooling In the red-hot coke dry extinguishing equipment, all or a part of the excess gas released into the atmosphere from the non-flammable circulation line is guided to the red-hot coke charging hopper and generated from the red-hot coke sword in the same hopper. Non-flammable gas supply twin to dilute flammable gas? i- and the above-mentioned action is carried out, the red-hot coke charging bottle ξ-
There is no need for nitrogen gas to dilute and purge the flammable gas generated inside the tank into the atmosphere. Moreover, it is difficult to burn the dilute combustible gas in the circulating cooling residue/b, which makes the trap catalyst tank uneasy, and there is no consumption of the catalyst. 1'@ru. In addition, since air is blown into the circulating cooling gas to burn the flammable gas in the circulating cooling gas, it is possible to keep the flammable gas in the circulating cooling gas below the explosion limit and keep operations busy. It has a long-lasting effect on women.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the scope of the present invention. So, chiru.

[Brief explanation of drawings]

FIG. 1 is a system diagram showing an embodiment of the red hot coke dry type fire extinguishing equipment according to the invention, FIG. 2 is a perspective view of a conventional red hot coke dry type fire extinguishing equipment, and FIG. 3 is a system diagram thereof. (1)...Red hot coke, (2)...Red hot coke charging hopper, (4)...Grate, (6)(6')(
1...Cooling room, (23)...Nonflammable gas supply line. Multiple agents: Patent attorney Okamoto Tsume Fumi and three others No. 20

Claims (1)

[Claims] In red-hot coke dry extinguishing equipment that extinguishes and cools red-hot coke supplied from a red-hot coke charging hopper onto a grate in a cooling chamber and moves on the grate with non-flammable gas circulating, the red-hot coke is supplied from the non-flammable circulation line to the atmosphere. A red-hot device characterized by comprising a non-flammable gas supply line that guides all or part of the released surplus gas to the red-hot coke charging hopper and dilutes the flammable gas generated from the red-hot coke in the hopper. Coke dry fire extinguishing equipment.