JPS6041510Y2 - Downward ventilation type water-cooled cupola - Google Patents

Description

[Detailed description of the invention] This furnace replaces the inner wall steel plate of the iron plate jacket structure of the known top-blown water-cooled cupola with a wooden pipe body P of the first cross section, and has a flue and a large number of blades necessary for downward ventilation. The opening T is penetrated through the outer shell iron plate 3 in the cross section of FIG. 3, and the furnace lid 6 is attached to the large diameter pipe small volume M3.
Limestone 7 is filled into the gap between the outer envelope 3 and P, and then iron material C and carbon-containing combustible material are introduced from the furnace lid 6, ignited, air is blown from the tuyere T, and water is passed through P to cool it: downward ventilation type. It is a water-cooled cupola.

The upper and lower surfaces of the medium-wound M2 forged large-diameter pipe incorporated in P have two functions necessary for downward ventilation [M2: Fig. 2] The first function is to prevent the charge C from the furnace lid 6 from flowing due to gravity. The space formed between this bottom cone and the lower surface of the second middle volume M2 dominates the flue corridor and leads to the flue. .

This corridor causes the furnace temperature reversal phenomenon ``A'' in which the temperature of the lower part of the middle truncated cone rises from the temperature of the lower part of the upper truncated cone.

This 'A'A' phenomenon is an effect in which carbon combustibles are deposited at the bottom of the packed bed of the spark C, where the truncated cone, that is, carbon grains that become raw due to several incomplete combustions in the packed bed, is heated.

The implementation situation is the bottom of the uppermost truncated cone: that is, the upper middle volume M2
The bottom surface of the middle truncated cone: that is, the corner surface of the middle winding, was kept at 1200°C [the temperature at which water and C turned into water gas] at 1600°C.
The temperature was raised to above C [however, the height of the middle cone must be 75 cm or more].

Therefore, if metal oxide is charged into the middle truncated cone from the middle tuyere T1 or a separately installed injection device port, it will be converted into reduced hot water by the high-temperature spark C.

In the lower truncated cone, the downward flame flow expands from the narrow cross-sectional center pigeonhole hole to the large slope of the lower truncated cone and decelerates while cooling down, so the vaporized metal carried by the flame is precipitated. There is a separation function in which the slag becomes molten metal, aggregates small droplets, separates it from the flame flow, flows into the slag 8 at the bottom of the lower truncated cone, and takes it out of the furnace from the outlet 9. In other words, the dust collector can be omitted.

The second function of the middle winding M2 is that the upper surface of each M2 attacks the floor surface of the truncated cone and causes the generated sparks C to stay there.

When this C is blown up into the sky with air from the tuyere opening on the floor, the mixed gaseous oxides [H2O, CO2, SO2, NO
[etc.] is cyclically converted into a water gas and an S-N circle is liberated.

In the example, soot from lime was made smokeless by blowing steam, and a tin can that had been used for a long time was melted into a truncated cone.

In particular, the amount of water vapor blown to the lower part of the truncated cone for water gasification will cause the coke weight ratio to be greater than 1. → In the case of water-containing material input, the drying device and hot air device are omitted.

In order to operate this furnace at 2000°C, it is necessary to set the height of the M2 furnace to 75 cm or more and inject powdered coal onto the top surface of M2; alternatively, the extrusion device must be installed from the outer shell 3 into the space above the second stage pigeon. It also penetrates and extrudes high-melting point substances and high-temperature reducing oxides, and sprays C on the top surface of M2.

Now, water cooling the M2 forged is new.

The water cooling flow path of P is shown in Figure 1 - The water injection of water supply valve V1 is large volume M1.
From there, it is divided into a large number of assembled small-diameter pipes 2, evaporated, and filled with M2'm, transferred to a steam distillation M2, and discharged from a steam valve V2.

P is a large, complex shape that can be assembled on-site and becomes a high-pressure steam iron that withstands various shocks.

The limestone 7 filled in the space between the outer envelope 3 and the outer envelope 3 provides basic operation and can protect the P from erosion.

This reactor, like the well-known top-blown water-cooled cupola, is capable of day blowing and can be expected to last for more than one cycle.

This furnace can omit the dehydration/drying equipment, hot air equipment, dust collector, desulfurization equipment (fixing the CaS slag with lime at >1430°C), etc. It is a rare earth oxide that converts other metal compounds into rings: It is also a non-polluting gas generating furnace.

[Brief explanation of the drawing]

Figure 1 is a secondary cross-sectional view of the wood pipe body P. The large winding Mi of the large diameter pipe M is
(with water supply valve V□), 2 medium volume M2 [one similar-shaped volume is connected with several small bent pipes B], small volume M3 [with steam valve V2]
etc., assembled using 2 small diameter pipes. FIG. 2 is a plan view of FIG. 1 M2. Figure 3 is a cross-sectional view of the main furnace assembled: 3 is a P outer shell iron plate that penetrates the cupola T and the flue, and the furnace lid 6 and the heating chamber 8 with the tap 9 are assembled. A state diagram when C is introduced.

Claims (1)

[Scope of utility model registration request] Water supply valves V1 are attached to 11 large diameter pipes M, with water supply valves V1 attached to the lowest stage, two middle volumes M2 of M are attached to the 2nd and 3rd stages, and steam valves V2 are attached to 31 small volumes of M. A steam flow water pipe body P assembled with two small diameter pipes and connected to each other, with the
Then, wrap P with iron plate 3; Next, insert multiple tuyeres T and flue into P from the outside of outer wrap 3, and wrap refractory material 7 with three
and P, attach the furnace lid 6 to M3, and incorporate the retention area 8 with outlet 9 on the bottom surface of P; open the furnace lid 6, put in the molten pig iron material C such as coke, iron material, limestone, etc., and close the furnace lid 6. It is characterized by igniting, blowing air from the tuyere T, and passing water through the tuyere T: A downward draft type water-cooled cupola.