CN216472839U

CN216472839U - Float glass melting furnace and combustion control system of zero furnace thereof

Info

Publication number: CN216472839U
Application number: CN202122827533.5U
Authority: CN
Inventors: 周林灿; 黄俊波; 吕鑫; 郑滔; 谈小平
Original assignee: Hubei Sanxia New Building Materials Co ltd
Current assignee: Hubei Sanxia New Building Materials Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-05-10
Anticipated expiration: 2031-11-17

Abstract

The utility model discloses a float glass melting furnace and a combustion control system of a zero furnace thereof. Wherein, float glass melting furnace includes the melting furnace body, the zero number small furnace of setting in melting furnace body both sides, all be equipped with combustor and petroleum coke conveyer pipe and pure oxygen conveyer pipe in two zero number small furnaces and all communicate, melting furnace body both sides still all are equipped with the flue, flue and the pipe intercommunication of discharging fume, still include heat exchanger, all connect the both ends mouth intercommunication that is equipped with heat exchanger and discharges fume the pipe and heat exchanger's inner tube on two rows of tobacco pipes, two heat exchangers still connect respectively to set up on two pure oxygen conveyer pipes and the input port and the delivery outlet intercommunication of pure oxygen conveyer pipe and heat exchanger's outer tube. In the technical scheme of the float glass melting furnace, the flue and the smoke exhaust pipe are additionally arranged in the front area of the glass melting furnace, smoke in a small zero furnace is timely led out, the quality of glass liquid is ensured, and meanwhile, the heat exchanger is adopted to recycle waste heat in the smoke exhaust pipe for preheating fuel, so that the combustion effect is enhanced, and the energy waste is reduced.

Description

Float glass melting furnace and combustion control system of zero furnace thereof

Technical Field

The utility model relates to the technical field of glass production and processing equipment, in particular to a float glass melting furnace and a combustion control system of a zero-number furnace thereof.

Background

When the float glass melting furnace is designed, due to position limitation and protection of an L-shaped hanging wall, a distance of 3-4m exists between the first small furnace and the feeding port, and flame radiation does not exist in the distance, namely heat is not transferred to batch materials. As can be seen from the theory of heat transfer, the main way to obtain energy by melting batch materials in a glass melting furnace is by radiant heat from the combustion flame in the furnace, and since there is no flame covering in this section, i.e. the melting area of the glass melting furnace is not effectively utilized, a small furnace with a size of zero is usually arranged in this section.

Referring to fig. 2, the conventional glass melting furnace includes a melting furnace body 1 and heat accumulating chambers 1c at both sides of the melting furnace body 1, a plurality of small furnaces 1b, i.e., a first small furnace, a second small furnace, a third small furnace, etc., are disposed between each heat accumulating chamber 1c and the melting furnace body 1, a charging opening 1a is disposed at the front end of the melting furnace body 1, a tin bath 1d is disposed at the rear end of the melting furnace body 1, and zero small furnaces 3 are disposed at both sides of the front area of the melting furnace.

The blackness of the batch materials in the front area of the melting furnace is much larger than that of the molten glass, and the heat absorption capacity of the batch materials is larger than that of the molten glass, so that the heat transfer efficiency is higher, the small zero-size furnace is reasonably utilized, the melting efficiency of the batch materials can be effectively improved, and the flying of the batch materials is reduced. In general, a small zero-grade furnace generally adopts natural gas as fuel, and the effect is remarkable. However, the fuel is changed into the petroleum coke, so that the whole control of the whole melting furnace combustion system is more convenient, the heat value generated by the combustion of the petroleum coke powder is larger, and the most reasonable control effect can be achieved under the condition of ensuring the balance of the combustion efficiency.

In the glass melting furnace, the regenerators and the small furnaces on two sides of the melting furnace work alternately, namely when the regenerator and the small furnace on one side are burnt, the regenerator and the small furnace on the other side are used as flues, and after the regenerators work reversely, the regenerators can preheat fuel. However, the small zero furnaces on the two sides of the melting furnace work synchronously, and because the front area of the melting furnace is not provided with a regenerative chamber, namely a flue, smoke cannot be discharged in time, the soot is easy to settle into the batch, the quality of molten glass is affected, and in addition, the fuel cannot be preheated by utilizing the heat accumulation residual temperature, and the combustion effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a float glass melting furnace and a combustion control system of a zero-number furnace thereof aiming at the prior technical situation, so that the quality of molten glass is ensured, the combustion effect is enhanced, and the energy waste is reduced.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a float glass melting furnace comprises a melting furnace body and small zero furnaces arranged at two sides of the melting furnace body, wherein burners are arranged in the small zero furnaces and communicated with a petroleum coke conveying pipe and a pure oxygen conveying pipe, a petroleum coke control main disc and a pure oxygen control main disc are respectively arranged on the petroleum coke conveying pipe and the pure oxygen conveying pipe, both sides of the melting furnace body are provided with flues, each flue is positioned right above the small furnace with zero at the same side, the flues are communicated with a smoke exhaust pipe, the melting furnace also comprises a heat exchanger, the heat exchanger comprises an inner pipe and an outer pipe sleeved on the inner pipe, the two ends of the outer pipe are connected with the outer wall of the inner pipe in a sealing mode, the two ends of the outer pipe are respectively provided with an input port and an output port, the two exhaust pipes are connected with two ports of the inner pipe which is provided with the heat exchanger and the exhaust pipe which is communicated with the heat exchanger, and the two heat exchangers are further connected with the input port and the output port which are arranged on the two pure oxygen conveying pipes and are communicated with the outer pipe of the heat exchanger.

Furthermore, a temperature sensor and a heater are sequentially arranged on the pure oxygen conveying pipe between the combustor and the heat exchanger, the temperature sensor is used for detecting the temperature of pure oxygen gas conveyed to the combustor, and the heater is used for actively heating the temperature of the pure oxygen gas conveyed to the combustor.

Furthermore, in the heat exchanger, a spiral partition plate is axially arranged in a cavity between the outer pipe and the inner pipe, so that the cavity between the outer pipe and the inner pipe is spiral.

Furthermore, the outer pipe is made of a heat-insulating material, and the inner pipe is made of a stainless steel material.

Furthermore, a plurality of ash blocking plates are alternately arranged in the flue from top to bottom, and the ash blocking plates are used for reducing return ash in the flue and the smoke exhaust pipe to the smelting furnace body.

The utility model provides a burning control system of float glass melting furnace zero-number furnace, including control mainboard and with control mainboard electric connection's combustor, petroleum coke control master, pure oxygen control master, heater and temperature sensor, the combustor all communicates with petroleum coke conveyer pipe and pure oxygen conveyer pipe, is equipped with petroleum coke control master and pure oxygen control master on petroleum coke conveyer pipe and the pure oxygen conveyer pipe respectively, lies in on the pure oxygen conveyer pipe to be equipped with temperature sensor and heater between combustor and the heat exchanger in proper order.

The utility model has the beneficial effects that:

1. the flue and the smoke exhaust pipe are additionally arranged in the front area of the glass melting furnace, smoke in the small zero furnace is timely led out, the quality of molten glass is guaranteed, meanwhile, the heat exchanger is adopted to recycle waste heat in the smoke exhaust pipe for preheating fuel, the combustion effect is enhanced, and energy waste is reduced;

2. the pure oxygen conveying pipe is additionally provided with the temperature sensor and the heater, and when the temperature of the pure oxygen conveyed to the combustor is too low, the pure oxygen is actively heated, so that the combustion effect is ensured.

Drawings

FIG. 1 is a schematic structural view (in cross-section) of a float glass furnace of the present invention;

FIG. 2 is a schematic view (plan) of a prior art float glass furnace;

FIG. 3 is a schematic view of the connection structure of the combustion control system of the float glass furnace zero.

Description of the labeling: 1. the melting furnace comprises a melting furnace body, a charging hole, a small furnace, a regenerator, a 1d, a tin bath, a No. 2 small furnace, a burner, a 4 petroleum coke conveying pipe, a 5 pure oxygen conveying pipe, a 6 flue, a 7 flue, a smoke exhaust pipe, an 8 outer pipe, a 9 inner pipe, a 10 baffle, a 11 temperature sensor, a 12 heater, a 13 ash baffle.

Detailed Description

The utility model will be further explained with reference to the drawings.

Referring to fig. 1, a float glass melting furnace includes a melting furnace body 1, and small zero furnaces 2 disposed at both sides of the melting furnace body 1, wherein burners 3 are disposed in the small zero furnaces 2, the burners 3 are communicated with a petroleum coke delivery pipe 4 and a pure oxygen delivery pipe 5, and the petroleum coke delivery pipe 4 and the pure oxygen delivery pipe 5 are respectively provided with a petroleum coke control main disc and a pure oxygen control main disc.

The two sides of the melting furnace body 1 are also provided with flues 6, each flue 6 is positioned right above the same-side small zero furnace 2, and the flues 6 are communicated with a smoke exhaust pipe 7.

Preferably, a plurality of ash baffles 13 are alternately arranged in the flue 6 from top to bottom, and the ash baffles 13 are used for reducing the return ash in the flue 6 and the smoke exhaust pipe 7 to the smelting furnace body 1.

Still include the heat exchanger, the heat exchanger includes inner tube 9 and the outer tube 8 of cover on inner tube 9, and 8 both ends of outer tube and 9 outer walls sealing connection of inner tube and 8 both ends of outer tube are equipped with input port and delivery outlet respectively.

The two smoke discharge pipes 7 are respectively connected with a heat exchanger, the smoke discharge pipes 7 are communicated with two ports of an inner pipe 9 of the heat exchanger, the two heat exchangers are respectively connected with two pure oxygen conveying pipes 5, and the pure oxygen conveying pipes 5 are communicated with an input port and an output port of an outer pipe 8 of the heat exchanger.

Preferably, in the heat exchanger, the cavity between outer tube 8 and inner tube 9 is equipped with heliciform baffle 10 along the axial, makes the cavity between outer tube 8 and the inner tube 9 be the heliciform, and when pure oxygen body passed through this cavity, the flow path was the heliciform, on the one hand, will make the air current be spiral air current, does benefit to pure oxygen body and petroleum coke and mixes, on the other hand, will increase the relative area of contact of pure oxygen body and flue gas, improves the heat transfer effect.

More preferably, the outer tube 8 is made of a heat-insulating material to reduce heat loss, and the inner tube 9 is made of a stainless steel material to improve the heat exchange rate.

Wherein, a temperature sensor 11 and a heater 12 are sequentially arranged on the pure oxygen conveying pipe 5 between the burner 3 and the heat exchanger, the temperature sensor 11 is used for detecting the temperature of the pure oxygen gas conveyed to the burner 3, and the heater 12 is used for actively heating the temperature of the pure oxygen gas conveyed to the burner 3.

Referring to fig. 3, the combustion control system of float glass melting furnace No. zero furnace includes a control main board, and a burner 3, a petroleum coke control main disc, a pure oxygen control main disc, a heater 12 and a temperature sensor 11 electrically connected to the control main board, wherein the burner 3 is communicated with a petroleum coke conveying pipe 4 and a pure oxygen conveying pipe 5, the petroleum coke conveying pipe 4 and the pure oxygen conveying pipe 5 are respectively provided with the petroleum coke control main disc and the pure oxygen control main disc, and the temperature sensor 11 and the heater 12 are sequentially arranged on the pure oxygen conveying pipe 5 between the burner 3 and the heat exchanger.

Specifically, the combustion control method of the float glass melting furnace zero furnace comprises the following steps: the control main board sends an instruction to the petroleum coke control main board and the pure oxygen control main board to control the supply of petroleum coke and pure oxygen in the burner 3, the pure oxygen is preheated by the heat exchanger in the conveying process, meanwhile, the burner 3 ignites the mixture of the petroleum coke and the oxygen to burn in the small zero-gauge furnace 2, and when the temperature of the pure oxygen conveyed to the burner 3 detected by the temperature sensor 11 is lower than the set temperature, the heater 12 actively heats the temperature of the pure oxygen conveyed to the burner 3 to be higher than the set temperature.

Overall, the advantages of the utility model are: the flue 6 and the smoke exhaust pipe 7 are additionally arranged in the front area of the glass melting furnace, smoke in the small zero furnace 2 is timely led out, the quality of molten glass is guaranteed, meanwhile, the heat exchanger is adopted to recycle waste heat in the smoke exhaust pipe 7 and is used for preheating fuel, the combustion effect is enhanced, and energy waste is reduced; the pure oxygen delivery pipe 5 is additionally provided with a temperature sensor 11 and a heater 12, and when the temperature of the pure oxygen delivered to the combustor 3 is too low, the pure oxygen is actively heated, so that the combustion effect is ensured.

It should be understood that the above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the utility model, therefore, all equivalent changes in the principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a float glass melting furnace, includes the melting furnace body, sets up the small furnace No. zero in melting furnace body both sides, all is equipped with combustor and petroleum coke conveyer pipe and pure oxygen conveyer pipe in the small furnace No. two and all communicates, is equipped with petroleum coke control master and pure oxygen control master on petroleum coke conveyer pipe and the pure oxygen conveyer pipe respectively, its characterized in that: melting furnace body both sides still all are equipped with the flue and each flue is located homonymy No. zero small stove directly over, the flue and the pipe intercommunication of discharging fume still include heat exchanger, heat exchanger includes that inner tube and cover establish the outer tube on the inner tube, and the outer tube both ends are equipped with input port and delivery outlet respectively with inner tube outer wall sealing connection and outer tube both ends, all connects the both ends mouth intercommunication that is equipped with heat exchanger and discharges fume the pipe with heat exchanger's inner tube on two exhaust pipes, and two heat exchangers still connect respectively to set up on two pure oxygen conveyer pipes and the input port and the delivery outlet intercommunication of pure oxygen conveyer pipe and heat exchanger's outer tube.

2. A float glass melter as defined in claim 1 wherein: the pure oxygen conveying pipe is provided with a temperature sensor and a heater which are sequentially arranged between the combustor and the heat exchanger, the temperature sensor is used for detecting the temperature of pure oxygen gas conveyed to the combustor, and the heater is used for actively heating the temperature of the pure oxygen gas conveyed to the combustor.

3. A float glass melter as defined in claim 1 wherein: in the heat exchanger, a spiral clapboard is arranged in a cavity between the outer pipe and the inner pipe along the axial direction, so that the cavity between the outer pipe and the inner pipe is spiral.

4. A float glass melter as claimed in claim 1 or 3 in which: the outer pipe is made of a heat-insulating material, and the inner pipe is made of a stainless steel material.

5. A float glass melter as defined in claim 1 wherein: and a plurality of ash blocking plates are alternately arranged in the flue from top to bottom, and are used for reducing ash returning in the flue and the smoke exhaust pipe to the smelting furnace body.

6. The utility model provides a burning control system of float glass melting furnace zero number stove which characterized in that: including control mainboard and with control mainboard electric connection's combustor, petroleum coke control master, pure oxygen control master, heater and temperature sensor, the combustor all communicates with petroleum coke conveying pipe and pure oxygen conveyer pipe, is equipped with petroleum coke control master and pure oxygen control master on petroleum coke conveying pipe and the pure oxygen conveyer pipe respectively, lies in on the pure oxygen conveyer pipe to be equipped with temperature sensor and heater between combustor and the heat exchanger in proper order.