JPS6031591A - Control of introduction of circulated gas into dry coke quencher - Google Patents

Abstract

PURPOSE:To cool and quency red-hot coke uniformly, by detecting the temp. of coke cooled with circulated gas for discharge and controlling the feed of the circulated gas into a cooling tower so that it may conform to a predetermined discharging temp. CONSTITUTION:Red-hot coke loaded in a cooling tower 1 through a feed opening 2 is cooled with circulated gas supplied through an inlet 7 and is discharged onto a conveyor 5 via a discharging valve 6, discharge opening 3 and a chute 4. The temp. of coke is detected with a thermometer 13 installed at the discharge opening 3 and the detected values are put in a computing controller 14 for calculation and comparison with a predetermined target temp. and feed of circulated gas from a fan 11 provided in a circulation path 10 is controlled so that the temp. of coke may be equal to the predetermined value. The circulated gas which has undergone heat exchange with the red-hot coke for recovery of sensible heat is led into a boiler 9 through an exhaust gas flue 8 for recovery of heat and circulation into the flow path 10.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a circulating gas control method for a coke dry extinguishing installation 611, and particularly to a method for controlling circulating gas in a coke dry extinguishing system 611, particularly in response to hot stones of coke cut from a cold 7JI jM. Control the amount and uniformly cool the red hot coke.
This invention relates to a circulating gas control method that can effectively recover a predetermined amount of sensible heat from red-hot coke as well as burning a fire.

In general, in a coke dry fire extinguishing installation LIT+, the circulating gas is configured to flow (14) as shown in Figure 21. A moving layer of red-hot coke is formed.

Circulating gas 9 is supplied to the moving bed in countercurrent flow from the bottom of the cooling tower to cool it and extinguish it.

Therefore, at the bottom of the cooling Jf, a, there is a circulating gas introduction method G (and at the top, the circulating gas, which has been heat exchanged with red-hot coke and recovered its WI heat, is transferred to the boiler d).
Transfer to 1 no 1 ki explosive path 0 /J<set (puried.

1. A boiler d is provided at the bottom of the drain C and is configured to recover sensible heat and cool the circulating scum. The circulating gas is cooled in the boiler d and is configured to flow through a circulation passage r to an input t''c.This passage is provided with a .

In addition, a cutout port 1 is provided at the bottom of the cold N11 convex a for cutting out the cold 2J+ coke, and on the downstream side of this cutout port 1, there is a conveyor for carrying out the cold 1J4 coke out of the system. ) J'/JX is established.

By the way, in general, the circulating gas is pumped into the cooling tower A from the circulating gas flow rate C installed at the bottom of the cooling tower A (it was operated with a constant air flow rate, for example, 150 ONm3/h). Because of the IC, even if there is a temperature change in the red hot coke charged in the cooling field, or the flow of the circulating gas becomes uneven, the circulation will continue. Gas Hiroto! There was a problem in making 'i1 correspond to this because of C flaw energy saving λ, l ffJ l. Continuous operation with the circulating gas set to a constant value is a red flag in Q2R. Vine. Excessive cooling 1. If the temperature of the circulating power introduced into the boiler d from the cooling tank 3a is low, a problem may arise in which the desired heat recovery cannot be achieved.

In addition, 1. LJ is taken out, j?
If the amount of coke in 1 decreases, the conventional operating method d
The above-mentioned problem always occurred in the case of No. 1, and pulsations occurred in the temperature of the circulating gas exhausted from the cold convex a.

Therefore, the present invention solves the problem of conventional coke dry method. i! 1 *set (
In view of the problems with the method of supplying circulating gas to +ifi (J3), it was devised to effectively solve these problems.

The purpose of the present invention is to uniformly cool and extinguish the red-hot coke by controlling the circulating gas in the cold IJI tower, which is cooled by the circulating gas. At the same time, it is possible to recover constant temperature 1.α from red-hot coke, minimize fluctuations in the negative 61 system of the boiler (9), and achieve energy savings. A gas introduction control 1j method is provided.

Embodiments of the present invention will be described below with reference to the attached drawings.

As shown in Fig. 2, a red-hot coke charging port 2 is installed in the second part of the vertically shaped Reimu 11 tower 1.
ll 781L is equipped with a cooling coke cutter 13 (
I'm getting fucked. The cut-off port 3 is provided with a cut-off valve 6 and a cut-out shoe 1-4, and a conveyor 5 is provided on the downstream side of the cut-out shoe 1-4. A moving layer of moving red-hot coke is formed.

In addition, at the bottom of the cooling tower 1, there is installed a lower circulation force (i, l'; σ) IJI air flue 8 is installed. A boiler 9 is installed downstream of this exhaust flue 8. Also, this boiler 9 has a circulation passage 10 for transferring heat-recovered and cooled gas to the lower body. This passage 10 is connected to the cooled circulating gas.
A circulation) 1 channel 11 is provided for introducing into the i.
There is.

A circulation passageway connecting the circulation fan 11 and the air intakes 1-17 is provided with 11 valves 12 for controlling diversion.

/J% The cutting port 3 is provided with a temperature sensor 13 for detecting the temperature of the coke being cut out.

At the output end of this temperature control device 113, a control device 1 is connected.
This jiii DW control device 14 actually measures the degree of convexity of the cut coke using a thermometer 13, compares the obtained detection vessel with a preset cut coke temperature stone, and determines the temperature of the cut coke. Setting Hana J: Sea urchin”
41 is configured to control the opening degree of the flow rate control valve 12.

Therefore, the method of the present invention will be described.

First, the crystal of coke cut out from the cooling 161 is detected by the cooling unit 13, and the coke is adjusted to a preset cutting temperature 1, and the coke is cooled.
From No. 4) Manual operation No. 11- is applied to the Hikotei control valve 12 to control the circulation waste member supplied from the circulation passage 10 to the Hikotei lower. Particularly in the method of the present invention, the temperature of the coke cut out by the cut-off valve 6 is actually measured at the cut-off port 3 or shoes 1 and 4 without time lag, and this value is compared with the preset II. Shi'C short clothes) core ℃ style i1
The control valve 12 is used to adjust the circulating gas r11.

Specifically, as shown in Figure 3, when the red hot coke temperature is 1000°C, the circulating gas 1 is 150 ONm.
3/I), 250° C. Cutting off (-) When equilibrium is maintained, as the temperature of coke changes to '105 Ω°C, the cutting fla Iu increases accordingly.

: A similar change occurs when the extraction ability (L/l+) is turned into a ☆ for 1 point. In response to these ☆ changes,
Circulating sludge (oil cylinder control) - flow through the control valve 1 through the valve 14
Adjust the scale of 2 to change the fA degree of the cut coke.
(g W i can be −C sa・ru.

In addition, when the coke is cut off, the circulating gas should be heated to a cold 1,111W (1,111W) (the circulating gas, which has undergone heat exchange with the red-hot coke and recovered the sensible heat, should be heated to a specified r.f.
It is important to maintain the heat recovery efficiency as much as possible, and to increase the heat recovery efficiency by the ball r]-9 as much as possible.

Coke dry installation on bamboo)-11 to J31J cold till
jh 1 - 4 gourds are generally calculated as (゛) = 1 - Output of cox [1 Warming stones can be used as a control pace to control the circulating gas rQt, J, u C1
Therefore, the equipment that implements this h-method can be simplified and easily adapted to existing equipment.
'CJ3, above 4 lines ii1' 134 cut out 1'' 3
Alternatively, it is preferable that the input irg 4 be installed near the cut-off valve 6, but the
If you add fi, you can set it to 75-1:.

According to the present invention, the following excellent effects can be achieved.

(1) Optimal amount of red-hot coke (cooled by 11 circulating gas) can be heated, resulting in energy saving.

(2) The sensible heat of the red-hot coke discharged from the cold lJI basin can be kept constant and covered with the circulating gas 4, thereby minimizing pulsation to the boiler and recovering the heat at I/lJ1.

(3) Automate the transfer of circulating waste to the cold 7J+13 and simplify the operation).

(4) By keeping the cut coke at a constant temperature, heat retention occurs in the discharge system.

[Brief explanation of drawings]

Fig. 1 is a schematic system diagram showing the ffi ring sludge system of a conventional coke dry extinguishing equipment, and Fig. 2 is a detailed diagram showing the ffi ring sludge system of the conventional coke dry extinguishing equipment. The schematic system diagram, Figure 3, is a graph showing the relationship between coke polishing and circulating gas. In the figure, 1 is the cooling tower, 0 is the red-hot coke moving bed, 3 is the cutting Ll, 9 is the boiler, and 10 is the Circulating gas 3[1”a,
12 Li rAj ii'x ili'l Oll
fi,'l 34;L'6a II if, -14 is for the arithmetic and control unit.

Claims (1)

[Claims] The red-hot coke moves from the top to the bottom of the cooling tower in a countercurrent direction to cool it and extinguish it. In the method of introducing circulating gas in coke dry extinguishing equipment, the coke is collected and introduced into a remelting cooling tower.
Circulating gas introduction system for coke dry extinguishing equipment characterized by controlling the amount of circulating gas for cooling so as to match the preset coke cutting temperature 911 method.