CN219264282U - Yellow phosphorus tail gas combustion system of double-beam lime kiln - Google Patents

Abstract

The utility model discloses a yellow phosphorus tail gas combustion system of a double-beam lime kiln, belonging to the technical field of lime kilns; yellow phosphorus tail gas generated by the double-beam lime kiln is led into a gas pipeline in the combustor through a tail gas pipeline; the gas external burner is positioned at the inlet end of the gas pipeline and is connected with the tail end of the tail gas pipeline; an adjusting valve for adjusting the feeding amount of yellow phosphorus tail gas is arranged on the gas external burner; the tail end of the gas pipeline is provided with a gas inner burner; the air flat ring surrounds the burner in the gas, and an air pipeline is communicated with the air flat ring and is used for providing oxygen for yellow phosphorus tail gas combustion; the outlet end of the steam pipeline is communicated between the gas external burner and the inlet end of the gas pipeline; the outlet end of the steam pipeline is provided with a closing valve; the utility model realizes the comprehensive utilization of the yellow phosphorus tail gas, saves energy and reduces emission, reduces the pollution of the yellow phosphorus tail gas to the environment, and has better social benefit, environmental protection benefit and economic benefit.

Description

Yellow phosphorus tail gas combustion system of double-beam lime kiln

Technical Field

The utility model relates to the technical field of lime kilns, in particular to a yellow phosphorus tail gas combustion system of a double-beam lime kiln.

Background

The double-beam lime shaft kiln is mainly used for limestone calcining equipment, and yellow phosphorus tail gas cannot be utilized due to the original kiln type burner structure.

The kiln burner designed in the prior art cannot utilize yellow phosphorus tail gas. The CO content of the yellow phosphorus tail gas is 80-90%, the traditional treatment mode of the yellow phosphorus tail gas is point lamp, namely, the yellow phosphorus tail gas is directly burnt and discharged after simple water treatment, so that the comprehensive utilization of resources can not be realized, and the environment is seriously polluted. The burning temperature of the yellow phosphorus tail gas can reach about 920 ℃ at most, the flame length is about 250mm, the width is about 30mm, and the yellow phosphorus tail gas has a wider heat radiation area.

In summary, yellow phosphorus tail gas is the best recycling way for fuel resource utilization. Lime is produced by adopting a lime kiln, the theoretical decomposition temperature of the lime is 800-1000 ℃, the actual firing temperature of the lime is 900 ℃, and the kiln temperature is about 1000 ℃, so that yellow phosphorus tail gas can be used as a substitute fuel for the lime kiln combustion process under specific and certain conditions. Realizes the comprehensive utilization of the yellow phosphorus tail gas, saves energy and reduces emission, reduces the pollution of the yellow phosphorus tail gas to the environment, and has better social benefit, environmental protection benefit and economic benefit.

Disclosure of Invention

Aiming at the problems in the background technology, the utility model provides a yellow phosphorus tail gas combustion system of a double-beam lime kiln. The system realizes the comprehensive utilization of the yellow phosphorus tail gas, saves energy and reduces emission, reduces the pollution of the yellow phosphorus tail gas to the environment, and has better social benefit, environmental protection benefit and economic benefit.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the yellow phosphorus tail gas combustion system of the double-beam lime kiln comprises a burner, a steam pipeline and an air pipeline; a gas pipeline, a gas inner burner and an air flat ring are arranged in the combustor;

yellow phosphorus tail gas generated by the double-beam lime kiln is led into a gas pipeline in the combustor through a tail gas pipeline; the gas external burner is positioned at the inlet end of the gas pipeline and is connected with the tail end of the tail gas pipeline; an adjusting valve for adjusting the feeding amount of yellow phosphorus tail gas is arranged on the gas external burner;

the tail end of the gas pipeline is provided with a gas inner burner; the air flat ring surrounds the burner in the gas, and an air pipeline is communicated with the air flat ring and is used for providing oxygen for yellow phosphorus tail gas combustion;

the outlet end of the steam pipeline is communicated between the gas external burner and the inlet end of the gas pipeline; the outlet end of the steam pipeline is provided with a closing valve; the shut-off valve is normally in a closed state.

Further, the device also comprises a heat conduction oil system; the heat conduction oil system mainly comprises a circulating oil pipe, a radiator, a circulating pump, a heat conduction oil tank and a heat conduction oil expansion tank; the circulating oil pipe partially bypasses between the inner wall and the outer wall of the burner and is used for taking away heat at the periphery of the burner;

both ends of the radiator and both ends of the circulating pump are connected to the circulating oil pipe, wherein the radiator is used for radiating heat conduction oil, and the circulating pump is used for providing power for circulation of the heat conduction oil; the bottom port of the heat conduction oil tank is connected to the circulating oil pipe, and the top port of the heat conduction oil tank is connected with the heat conduction oil expansion tank.

The beneficial effects generated by adopting the technical scheme are as follows:

the utility model has simple manufacturing structure, and other systems are kept unchanged by using the burner; the double-beam kiln can utilize the yellow phosphorus tail gas as fuel to replace other fuels, realize the comprehensive utilization of the yellow phosphorus tail gas, save energy and reduce emission, reduce the pollution of the yellow phosphorus tail gas to the environment, and have better social benefit, environmental protection benefit and economic benefit.

Drawings

Fig. 1 is a schematic diagram of a heat transfer oil system according to an embodiment of the utility model.

FIG. 2 is a schematic view of a burner configuration according to an embodiment of the present utility model.

In the figure, 1, a burner, 2, a circulating oil pipe, 3, a radiator, 4, a circulating pump, 5, a heat conduction oil tank, 6, a heat conduction oil expansion tank, 1-1, the inner wall of the burner, 1-2, an inlet and an outlet of heat conduction oil, 1-3, an air inlet, 1-4 gas inlets, 1-6, a gas pipeline in the burner, 1-7, a gas burner, 1-8 and an air flat ring.

Detailed Description

The utility model will be further described with reference to the drawings and detailed description.

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly described below, and it will be apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

The yellow phosphorus tail gas combustion system of the double-beam lime kiln comprises a combustor 1, a steam pipeline and an air pipeline; a gas pipeline, a gas inner burner and an air flat ring are arranged in the combustor;

yellow phosphorus tail gas generated by the double-beam lime kiln is led into a gas pipeline in the combustor through a tail gas pipeline; the gas external burner is positioned at the inlet end of the gas pipeline and is connected with the tail end of the tail gas pipeline; an adjusting valve for adjusting the feeding amount of yellow phosphorus tail gas is arranged on the gas external burner;

the tail end of the gas pipeline is provided with a gas inner burner; the air flat ring surrounds the burner in the gas, and an air pipeline is communicated with the air flat ring and is used for providing oxygen for yellow phosphorus tail gas combustion;

the outlet end of the steam pipeline is communicated between the gas external burner and the inlet end of the gas pipeline; the outlet end of the steam pipeline is provided with a closing valve; the valve is normally closed, and when the burner is coked or blocked, yellow phosphorus tail gas in the gas pipeline is purged by utilizing steam, so that the normal operation of the burner is ensured.

Further, the device also comprises a heat conduction oil system; the heat conduction oil system mainly comprises a circulating oil pipe, a radiator, a circulating pump, a heat conduction oil tank and a heat conduction oil expansion tank; the circulating oil pipe partially bypasses between the inner wall and the outer wall of the burner and is used for taking away heat at the periphery of the burner;

both ends of the radiator and both ends of the circulating pump are connected to the circulating oil pipe, wherein the radiator is used for radiating heat conduction oil, and the circulating pump is used for providing power for circulation of the heat conduction oil; the bottom port of the heat conduction oil tank is connected to the circulating oil pipe, and the top port of the heat conduction oil tank is connected with the heat conduction oil expansion tank.

The following is a more specific example:

referring to fig. 1 and 2, the present embodiment mainly includes: the burner comprises a burner body, a heat conducting oil inlet and outlet, an air inlet, a gas inlet, a steam inlet, a gas pipeline in the burner, a gas burner and an air flat ring. The main characteristics are that: the burner is applied to a double-beam lime kiln, yellow phosphorus tail gas generated by incomplete combustion of a boiler can be used as fuel, the yellow phosphorus tail gas is sent to a pressurizing station for pressurization to 7-15 kPa through simple purification treatment, then the yellow phosphorus tail gas is sent to the burner, and an adjusting valve is arranged at each air inlet pipe position through a gas pipeline in the burner as shown in fig. 2, so that independent adjustment of each burner can be realized. Air enters the burner body through the air inlet, and is sent to the burner through the air flat ring to replace other fuels to produce lime by using yellow phosphorus tail gas, so that a new channel for recycling and comprehensively utilizing the yellow phosphorus tail gas is opened up, and the pollution of the yellow phosphorus tail gas to the environment can be reduced, thereby realizing the comprehensive utilization of the yellow phosphorus tail gas, saving energy and reducing emission, and having better social benefit, environmental protection benefit and economic benefit.

The burner is applied to a double-beam lime kiln, yellow phosphorus tail gas can be used as fuel, and the yellow phosphorus tail gas is sent to a pressurizing station for pressurization to 7-15 kPa after simple purification treatment and then is sent to the burner. Each burner is controlled respectively, and kiln conditions can be adjusted better. The burner structurally realizes that yellow phosphorus tail gas is used as fuel, reduces pollution of the yellow phosphorus tail gas to the environment, and has the effect of protecting the environment.

The pressurized yellow phosphorus tail gas enters each burner after being pressurized, a manual adjusting valve is arranged at each burner outside the burner, the air inflow can be controlled, flame can be reasonably adjusted according to kiln conditions, a steam inlet pipeline is arranged beside each coal gas inlet, each steam inlet pipeline is provided with a shut-off valve, the shut-off valves are in a closed state under normal conditions, when the burner is coked, blocked and the like, steam supplied by a steam system is utilized to purge a yellow phosphorus furnace tail gas channel in the burner in time, and the normal operation of the burner is ensured.

Air enters the burner through the air inlet and is diffused around the burner through the air flat ring. An air flat ring is arranged on the outer side of each burner. The structure can ensure the full combustion of the coal gas and provide the heat required for the decomposition of the limestone.

The combustor body sets up conduction oil system, and conduction oil is imported and exported through the conduction oil that the body set up, and in the production in-process, conduction oil constantly circulates in this, stabilizes the body in certain temperature, the normal operating of protection combustor. The device realizes the comprehensive utilization of yellow phosphorus tail gas, saves energy and reduces emission, and has better social benefit, environmental protection benefit and economic benefit.

Around the burner, the gas is fully combusted. The outside conduction oil system that sets up of combustor body, conduction oil are got into by the import, and the export comes out, take away the heat, protection combustor body. Thereby ensuring the normal production of the double-beam kiln.

Claims (2)

1. The yellow phosphorus tail gas combustion system of the double-beam lime kiln comprises a combustor (1), and is characterized by further comprising a steam pipeline and an air pipeline; a gas pipeline (1-6), a gas inner burner and an air flat ring (1-8) are arranged in the combustor;

yellow phosphorus tail gas generated by the double-beam lime kiln is led into a gas pipeline in the combustor through a tail gas pipeline; the gas external burner is positioned at the inlet end of the gas pipeline and is connected with the tail end of the tail gas pipeline; an adjusting valve for adjusting the feeding amount of yellow phosphorus tail gas is arranged on the gas external burner;

the tail end of the gas pipeline is provided with a gas inner burner; the air flat ring surrounds the burner in the gas, and an air pipeline is communicated with the air flat ring and is used for providing oxygen for yellow phosphorus tail gas combustion;

the outlet end of the steam pipeline is communicated between the gas external burner and the inlet end of the gas pipeline; the outlet end of the steam pipeline is provided with a closing valve; the shut-off valve is normally in a closed state.

2. The dual beam lime kiln yellow phosphorus tail gas combustion system of claim 1, further comprising a heat transfer oil system; the heat conduction oil system mainly comprises a circulating oil pipe, a radiator, a circulating pump, a heat conduction oil tank and a heat conduction oil expansion tank; the circulating oil pipe partially bypasses between the inner wall and the outer wall of the burner and is used for taking away heat at the periphery of the burner;

both ends of the radiator and both ends of the circulating pump are connected to the circulating oil pipe, wherein the radiator is used for radiating heat conduction oil, and the circulating pump is used for providing power for circulation of the heat conduction oil; the bottom port of the heat conduction oil tank is connected to the circulating oil pipe, and the top port of the heat conduction oil tank is connected with the heat conduction oil expansion tank.

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