CN202813374U - Magnesium reduction furnace combustion system - Google Patents

Abstract

A combustion system for a magnesium reduction furnace, comprising a furnace, a gas input module, an air input module, an exhaust gas discharge module, a first temperature controller, a second temperature controller and a pressure transmitter. The burner, the flame port of the regenerative burner faces into the furnace, and the regenerative burner is equipped with an igniter; the gas input module and the air input module respectively deliver gas and air to the regenerative burner on the side of the furnace and its igniter, gas and air burn in the furnace after passing through the regenerative burner on this side and its igniter to generate exhaust gas; the exhaust gas is discharged out of the furnace through the regenerative burner on the other side of the furnace, and then The exhaust gas is discharged to the outside of the combustion system of the magnesium reduction furnace by the exhaust gas discharge module; the regenerative burners on both sides of the furnace perform the process of burning gas and exhausting exhaust gas in turn; the utility model provides a combustion system of the magnesium reduction furnace, which The thermal efficiency is high, the waste of fuel is reduced, and the production cost can be reduced.

Description

Combustion system of a magnesium reduction furnace

technical field

The utility model relates to a combustion system, in particular to a combustion system for a magnesium reduction furnace.

Background technique

The reduction and smelting of magnesium using a combustion system is a conventional method, but the reduction and smelting of magnesium usually requires a relatively high temperature, so a large amount of fuel must be burned. However, the existing combustion system of the magnesium reduction furnace consumes a lot of energy and has low thermal efficiency, resulting in A large amount of fuel is wasted, which keeps production costs high.

Utility model content

The purpose of the utility model is to provide a magnesium reduction furnace combustion system, which has high thermal efficiency, reduces waste of fuel, and can reduce production costs.

The combustion system of the above-mentioned magnesium reduction furnace includes a furnace, a gas input module, an air input module, an exhaust gas discharge module, a first temperature controller, a second temperature controller and a pressure transmitter. Nozzle, the flame outlet of the regenerative burner faces into the furnace, and the regenerative burner is equipped with an igniter;

The gas input module includes a gas input source and a valve, and the gas input source is connected to the regenerative burner and its igniter through the valve;

The air input module includes a blower and a valve, and the blower is connected to each regenerative burner and its igniter through the valve;

The exhaust gas discharge module includes an induced fan and a valve, and the induced fan is connected to each regenerative burner through the valve;

The gas input module and the air input module respectively deliver gas and air to the regenerative burner and its igniter on one side of the furnace, and the gas and air pass through the regenerative burner and its igniter on this side and then enter the furnace. Burn and generate waste gas; the waste gas is discharged to the outside of the furnace through the regenerative burner on the other side of the furnace, and then discharged to the outside of the combustion system of the magnesium reduction furnace by the waste gas discharge module;

The regenerative burners on both sides of the furnace burn gas and discharge waste gas in turn.

Preferably, a filter, a pressure gauge and a flow gauge are also provided on the channel connecting the gas input source to the regenerative burner and its igniter.

Preferably, the channel connecting the gas input source with the regenerative burner and its igniter is also provided with a gas low pressure switch, a gas high pressure switch, a release solenoid valve, a gas safety solenoid valve and a gas leak detection device.

Preferably, a gas valve is provided on the passage connecting the gas input module to the regenerative burner, and an air valve is provided on the passage connecting the air input module to the regenerative burner;

The gas valve adjusts the degree of opening and closing of the air valve through a lever system, so as to adjust the amount of air delivered to the regenerative burner.

Preferably, the combustion system of the magnesium reduction furnace of the present invention includes a heat preservation pipe, which is arranged around the outer wall of the furnace; the waste gas discharge module is connected to the heat preservation pipe, and the waste gas discharged from the waste gas discharge module passes through the heat preservation pipe and then discharged.

Preferably, the insulation pipe includes a first insulation pipe and a second insulation pipe, the first insulation pipe is arranged around the outer wall on the left side of the furnace, the second insulation pipe is arranged around the outer wall on the right side of the furnace, and the exhaust gas discharge module is connected to the The first insulation pipe and the second insulation pipe are connected;

When the right side of the furnace is ignited, the waste gas discharge module is connected with the first heat preservation pipe, and the waste gas discharged from the waste gas discharge module passes through the first heat preservation pipe and then discharged;

When the left side of the furnace is ignited, the waste gas discharge module communicates with the second heat preservation pipe, and the waste gas discharged from the waste gas discharge module passes through the second heat preservation pipe and then is discharged.

The utility model has multiple beneficial effects:

First, the regenerative burner emits less exhaust gas, has high thermal efficiency, reduces environmental pollution, and saves energy;

Second, there is a first thermostat, as long as the setting value is appropriate, when the temperature in the furnace does not reach the self-ignition value of the gas, keeping the igniter always in the ignition state can ensure that the gas can be ignited; and when the temperature in the furnace If the temperature far exceeds the self-ignition value of the gas, stopping the igniter can also ensure the combustion of the gas;

Third, the second thermostat adjusts the gas input according to the temperature in the furnace at any time, so it can ensure the constant temperature in the furnace;

Fourth, too much pressure in the furnace will easily lead to explosion, and too little pressure may reduce the working efficiency, so the pressure in the furnace is adjusted at all times through the pressure transmitter to ensure the stable operation of the system;

Fifth, the exhaust gas is discharged through the insulation pipe, which plays a role in insulating the furnace, reducing the heat loss in the furnace, thereby saving fuel and making full use of the heat of the exhaust gas;

Sixth, because when the furnace is ignited on the left side, the temperature on the left side is obviously higher than that on the right side, which leads to uneven heat distribution in the furnace, resulting in a large difference in the quality of magnesium reduction (the same is true when the furnace is ignited on the right side) and when the left side of the furnace of the present invention is ignited, waste gas is sent to the second insulation pipe on the right side of the furnace, and the right side of the furnace is insulated to reduce the temperature difference on both sides of the furnace and reduce the difference in magnesium reduction quality (the furnace The same applies when firing on the right).

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

The embodiment of the utility model is shown in Figure 1, including a furnace 1, a gas input module 2, an air input module 3 and a waste gas discharge module 4, and the two sides of the furnace 1 are provided with a regenerative burner 1A, and the regenerative burner 1A is equipped with an igniter 1B, and the burner port of the regenerative burner 1A faces into the furnace 1; the gas input module 2 and the air input module 3 respectively deliver gas and air to the regenerative burner 1A on the side of the furnace 1, After the gas and air pass through the regenerative burner 1A on this side, they burn in the furnace 1 and generate exhaust gas; the exhaust gas is discharged to the outside of the furnace 1 through the regenerative burner 1A on the other side of the furnace 1, and then the exhaust gas is discharged from the module 4. Discharge it to the outside of the combustion system; the regenerative burners 1A on both sides of the furnace 1 take turns to perform the process of burning gas and discharging exhaust gas.

Wherein, the gas input module 2 includes a gas input source and a valve, and the gas input source is connected to the regenerative burner 1A and its igniter 1B through the valve; the gas input source is connected to the regenerative burner 1A and its ignition A filter, a pressure gauge, a flow meter, a gas low pressure switch, a gas high pressure switch, a release solenoid valve, a gas safety solenoid valve and a gas leak detection device are also provided on the passage connected to the device 1B.

The air input module 3 includes a blower 3A and a valve, and the blower 3A is connected to each regenerative burner 1A and its igniter 1B through the valve; the waste gas discharge module 4 includes an induced draft fan 4A and a valve, and the induced draft fan 4A passes through the valve It is connected to each regenerative burner 1A; and both the blower 3A and the induced draft fan 4A are connected to the regenerative burner 1A through a three-way valve.

The combustion system also includes a first temperature controller and a second temperature controller. When the temperature in the furnace 1 is lower than the set value, the first temperature controller controls the igniter 1B to be in a continuous ignition state; when the temperature in the furnace 1 When it is greater than or equal to the set value, the first thermostat controls the igniter 1B to be in the state of stopping ignition.

And, when the temperature in the furnace 1 is lower than the set value, the second thermostat controls the gas input module 2 to increase the input amount of gas; when the temperature in the furnace 1 is lower than the set value, the second thermostat controls the gas input Module 2 reduces the input of gas; the setting values of the first thermostat and the second thermostat are not specified the same, and should be set according to specific conditions.

And the combustion system also includes a pressure transmitter P, when the pressure in the furnace 1 is less than the set value, the pressure transmitter P controls the exhaust gas discharge module 4 to reduce the discharge of exhaust gas; when the pressure in the furnace 1 is greater than the set value , the pressure transmitter P controls the exhaust gas discharge module 4 to increase the discharge of exhaust gas.

Furthermore, a gas valve 5 is provided on the passage connecting the gas input module 2 to the regenerative burner 1A, and an air valve 6 is provided on the passage connecting the air input module 3 to the regenerative burner 1A; The gas valve 5 adjusts the degree of opening and closing of the air valve 6 through a lever system, so as to adjust the amount of air delivered to the regenerative burner 1A.

When the combustion system is working, the gas input module 2 sends gas to the regenerative burner 1A and its igniter 1B on one side, and at the same time, the air input module 3 also sends air to the regenerative burner 1A and its igniter 1B. The igniter 1B, and then the gas is ignited by the igniter 1B; the exhaust gas generated by the gas combustion is discharged from the regenerative burner 1A on the other side, and is pumped out of the system by the induced draft fan 4A.

During the whole process, the regenerative burners 1A on both sides alternately burn gas, that is, when the regenerative burners 1A on one side burn gas, the regenerative burners 1A on the other side discharge exhaust gas; And during the whole working process, the first and second temperature controllers and the pressure transmitter P all monitor the combustion system.

In addition, the magnesium reduction furnace combustion system of the present invention also includes a first heat preservation pipe and a second heat preservation pipe. The first heat preservation pipe is arranged around the outer wall on the left side of the furnace 1, and the second heat preservation pipe is arranged around the outer wall on the right side of the furnace 1. The waste gas The discharge module 4 is connected with the first insulation pipe and the second insulation pipe through a three-way valve.

When the right side of the furnace 1 is ignited, the waste gas discharge module 4 is shut off from the second heat preservation pipe and communicated with the first heat preservation pipe, and the waste gas discharged from the waste gas discharge module 4 passes through the first heat preservation pipe and then discharged.

When the left side of the furnace 1 is ignited, the waste gas discharge module 4 is shut off from the first heat preservation pipe and communicated with the second heat preservation pipe, and the waste gas discharged from the waste gas discharge module 4 passes through the second heat preservation pipe and then discharged.

Improvements on the basis of the above embodiments are also considered as the scope of protection of the patent.

Claims (6)

1. magnesium reducing furnace combustion system, it is characterized in that: comprise burner hearth, combustion gas input module, air input module, waste gas discharge module, the first temperature controller, the second temperature controller and pressure transmitter, described burner hearth both sides are provided with heat-accumulating burner, the bocca of heat-accumulating burner is in burner hearth, and heat-accumulating burner is provided with igniter;

Described combustion gas input module comprises combustion gas input source and valve, and the combustion gas input source joins by valve and heat-accumulating burner and igniter thereof;

Described air input module comprises air blast and valve, and air blast joins by valve and each heat-accumulating burner and igniter thereof;

Described waste gas is discharged module and is comprised air-introduced machine and valve, and air-introduced machine joins by valve and each heat-accumulating burner;

Described combustion gas input module, air input module are delivered to combustion gas, air respectively heat-accumulating burner and the igniter thereof of burner hearth one side, combustion gas and air through the heat-accumulating burner of this side and igniter thereof after in the burner hearth internal combustion and produce waste gas; Described waste gas is expelled to outside the burner hearth through the heat-accumulating burner of burner hearth opposite side, discharges module by waste gas again it is expelled to outside the magnesium reducing furnace combustion system;

The heat-accumulating burner of described burner hearth both sides is carried out combustion gas, combustion gas in turn.

2. magnesium reducing furnace combustion system according to claim 1 is characterized in that: also be provided with filter, Pressure gauge and flowmeter on described combustion gas input source and the passage that heat-accumulating burner and igniter thereof link to each other.

3. magnesium reducing furnace combustion system according to claim 2 is characterized in that: also be provided with Low Pressure Gas Network switch, combustion gas high-voltage switch gear on described combustion gas input source and the passage that heat-accumulating burner and igniter thereof link to each other, diffuse magnetic valve, fuel gas safe electromagnetic valve and gas leakage device.

4. magnesium reducing furnace combustion system according to claim 1, it is characterized in that: the passage that described combustion gas input module links to each other with heat-accumulating burner is provided with burnt gas valve, and the passage that described air input module links to each other with heat-accumulating burner is provided with air door;

The switching degree that described burnt gas valve is regulated air door by lever system is regulated the air capacity that is delivered to heat-accumulating burner with this.

5. magnesium reducing furnace combustion system according to claim 1 is characterized in that: comprise insulating tube, insulating tube is around the hearth outer wall setting; Waste gas is discharged module and is joined with insulating tube, and the waste gas that waste gas is discharged the module discharge is discharged after by insulating tube.

6. magnesium reducing furnace combustion system according to claim 5, it is characterized in that: described insulating tube comprises the first insulating tube and the second insulating tube, the first insulating tube is around the outer wall setting in burner hearth left side, the second insulating tube is around the outer wall setting on burner hearth right side, and waste gas is discharged module and is connected with the first insulating tube, the second insulating tube by multiple-way valve;

When light a fire in the burner hearth right side, waste gas is discharged module and is communicated with the first insulating tube, and the waste gas of waste gas discharge module discharge is discharged after by the first insulating tube;

When light a fire in burner hearth left side, waste gas is discharged module and is communicated with the second insulating tube, and the waste gas of waste gas discharge module discharge is discharged after by the second insulating tube.

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