CN118108394A - Glass preparation system and glass preparation method - Google Patents

Abstract

The invention relates to the technical field of glass preparation, in particular to a glass preparation system and a glass preparation method. The glass preparation system comprises a heat source supply furnace, an air distribution device, a closable air inlet valve, a glass kiln and a reprocessing device, wherein the air distribution device is communicated with the air inlet valve through an air inlet pipeline, the heat source supply furnace comprises a plasma generation device, an air inlet of the heat source supply furnace is communicated with the air distribution device, and the plasma generation device is used for ionizing gas conveyed by the air distribution device to form heat source gas. The glass kiln is communicated with the air outlet of the heat source supply furnace and melts glass production raw materials through heat source gas, the glass kiln is communicated with the air distribution device through a flue gas pipeline, and a closed gas circulation route can be formed among the air distribution device, the heat source supply furnace and the glass kiln. The glass preparation system provided by the invention can recycle the gas used for melting the glass production raw material and the gas generated during melting the production raw material, thereby reducing the exhaust emission.

Description

Glass preparation system and glass preparation method

Technical Field

The invention relates to the technical field of glass preparation, in particular to a glass preparation system and a glass preparation method.

Background

In conventional glass production kiln firing, natural gas is mainly used as a fuel. This combustion process requires sufficient air and oxygen and is mixed with the material for combustion. Various waste gases, such as SO ₂、CO、CO₂、NO_X and the like, are generated in the combustion process of the natural gas, and part of the waste gases are directly discharged, and part of the waste gases are discharged after dust removal or purification treatment, SO that different degrees of pollution are caused to the environment. In addition, the waste heat utilization efficiency of waste gas generated by the kiln in the prior art is not high.

Disclosure of Invention

The invention aims to at least solve the problem that waste gas generated in the glass preparation process causes environmental pollution. The aim is achieved by the following technical scheme:

a first aspect of the present invention provides a glass manufacturing system comprising:

a closable intake valve;

The air distribution device is communicated with the air inlet valve through an air inlet pipeline;

A heat source supply furnace comprising a plasma generating device, wherein an air inlet of the heat source supply furnace is communicated with the air distribution device, and the plasma generating device is used for ionizing the air distribution device to convey the heat source gas;

the glass kiln is provided with a feed inlet, the glass kiln is communicated with an air outlet of the heat source supply furnace and melts glass production raw materials entering from the feed inlet through the heat source gas, the glass kiln is communicated with the air distribution device through a flue gas pipeline, and a closed gas circulation route can be formed among the air distribution device, the heat source supply furnace and the glass kiln;

and the reprocessing device is communicated with the discharge port of the glass kiln.

The glass manufacturing system according to the present invention enables the glass manufacturing system to melt glass raw materials using an ionization heating technique by using a plasma generating device as a part of a heat source supply furnace. The use of the plasma generating device can greatly reduce the harmful exhaust gas generated compared with the conventional combustion furnace. Meanwhile, the air distribution device is communicated with the heat source supply furnace, the heat source supply furnace is communicated with the glass kiln, the glass kiln is communicated with the air distribution device through a flue gas pipeline, and the air distribution device is communicated with the closable air inlet valve, so that a closed gas circulation route can be formed among the air distribution device, the heat source supply furnace and the glass kiln, and the glass preparation system can recycle gas used for melting glass raw materials and gas generated during melting glass raw materials, thereby reducing the requirement of fresh gas and further reducing exhaust emission.

In addition, the glass preparation system according to the invention may also have the following additional technical features:

In some embodiments of the invention, the glass manufacturing system further comprises a heat exchange device connected to the flue gas duct and exchanging heat with the gas in the flue gas duct.

In some embodiments of the invention, the glass preparation system further comprises a waste heat power generation device and a diversion pipeline, wherein a first end of the diversion pipeline is communicated with one end of the flue gas pipeline, which is close to the glass kiln, and a second end of the diversion pipeline is communicated with one end of the flue gas pipeline, which is close to the air distribution device, and the waste heat power generation device is arranged on the diversion pipeline.

In some embodiments of the invention, the glass manufacturing system further comprises a gas recovery device that communicates with the split flow conduit and recovers recoverable gas in the split flow conduit.

In some embodiments of the invention, the glass manufacturing system further comprises a diverter valve disposed at the first end and allowing gas to pass through the diverter line.

In some embodiments of the invention, the reprocessing device comprises a forming unit and an annealing unit which is communicated with the forming unit and anneals formed glass, wherein the forming unit is communicated with a discharge hole of the glass kiln, the annealing unit is communicated with a flue gas pipeline passing through the heat exchange device, and heat exchange and cooling gas in the flue gas pipeline enters the annealing unit for annealing.

In some embodiments of the present invention, the heat source supply furnace further includes a furnace body having the air inlet and the air outlet, and a conveying passage for communicating the air inlet and the air outlet;

The plasma generating device comprises an electrode assembly, wherein the electrode assembly comprises a first electrode rod and a second electrode rod which are arranged on the furnace body at intervals, the first electrode rod and the second electrode rod are positioned on a first straight line, and the first straight line is perpendicular to the extending direction of the conveying channel; the first electrode rod is provided with a first working end, the second electrode rod is provided with a second working end, the first working end and the second working end are arranged in the conveying channel, and a discharge distance can be kept between the first working end and the second working end.

In some embodiments of the invention, the heat source supply furnace further comprises a restraint mechanism comprising:

the two air supply assemblies are respectively arranged at two ends of the conveying channel, each air supply assembly is provided with an air supply piece which is arranged around the conveying channel as a center, and the directions of the air supply pieces of the two air supply assemblies are opposite;

the air supply assembly is arranged outside the furnace body and used for supplying air to the air supply assembly.

The second aspect of the present invention provides a glass manufacturing method, which is applied to the glass manufacturing system, and comprises the following steps:

melting a glass production raw material in the circulated heat source gas;

shaping the melted liquid glass;

and annealing the glass after the forming treatment in the heat-exchanged heat source gas.

In some embodiments of the invention, the glass production raw material comprises silica sand and limestone, and the gas heated by cyclic ionization is carbon dioxide.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 schematically illustrates a schematic view of a glass manufacturing system according to an embodiment of the present invention;

Fig. 2 schematically shows a schematic structural view of a heat source supply furnace according to an embodiment of the present invention;

fig. 3 is a flow chart of a glass manufacturing method according to an embodiment of the present invention.

The reference numerals are as follows:

100. A glass preparation system;

10. A heat source supply furnace; 11. an electrode assembly; 111. a first electrode rod; 112. a second electrode rod; 12. a furnace body; 121. an air inlet; 122. an air outlet; 13. a restraint mechanism; 131. an air supply assembly; 132. an air supply assembly; 1321. an air supply member;

20. An air distribution device; 30. an air inlet valve; 40. a glass kiln; 41. a feed inlet; 42. a buffer chamber; 421. a heat transfer channel; 50. a reprocessing device; 51. a molding unit; 52. an annealing unit; 60. a heat exchange device; 70. a waste heat power generation device; 71. a shunt pipeline; 711. a first end; 712. a second end; 80. a gas recovery device; 90. an air intake duct; 91. a flue gas duct; 911. a reversing valve; 92. and (5) backheating the pipeline.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Accordingly, the example term "below … …" may include both upper and lower orientations.

As shown in fig. 1 to 2, according to an embodiment of the present invention, there is provided a glass manufacturing system 100 including a heat source supply furnace 10, a wind distribution device 20, a closable air inlet valve 30, a glass kiln 40, and a reprocessing device 50, wherein the wind distribution device 20 communicates with the air inlet valve 30 through an air inlet pipe 90, the heat source supply furnace 10 includes a plasma generation device, and an air inlet 121 of the heat source supply furnace 10 communicates with the wind distribution device 20, and the plasma generation device is used to ionize a gas delivered by the wind distribution device 20 to form a heat source gas. The glass kiln 40 is provided with a feed inlet 41, and glass production raw materials are put in from the feed inlet 41. The glass kiln 40 is communicated with the air outlet 122 of the heat source supply furnace 10 and melts the glass production raw material entering from the feed inlet 41 through the heat source gas, the glass kiln 40 is communicated with the air distribution device 20 through the flue gas pipeline 91, a closed gas circulation route can be formed among the air distribution device 20, the heat source supply furnace 10 and the glass kiln 40, finally, the reprocessing device 50 is communicated from the discharge port of the glass kiln 40, and the reprocessing device 50 carries out forming and annealing treatment on liquid glass.

The glass manufacturing system 100 according to the present invention enables the glass manufacturing system 100 to melt glass raw materials using an ionization heating technique by using a plasma generating device as a part of the heat source supply furnace 10. The use of the plasma generating device can greatly reduce the harmful exhaust gas generated compared with the conventional combustion furnace. Meanwhile, since the air distribution device 20 is communicated with the heat source supply furnace 10, the heat source supply furnace 10 is communicated with the glass kiln 40, the glass kiln 40 is communicated with the air distribution device 20 through the flue gas pipeline 91, and the air distribution device 20 is communicated with the closable air inlet valve 30, a closed gas circulation route can be formed among the air distribution device 20, the heat source supply furnace 10 and the glass kiln 40, and the glass preparation system 100 can recycle heat source gas used for melting glass production raw materials and gas generated during melting glass production raw materials, so that the requirements for fresh gas are reduced, and the exhaust emission is further reduced. The closed gas circulation path may be formed because the heat source supply furnace 10 uses a plasma generating device as a heat source, so that the plasma generating device can continuously ionize the gas in the gas circulation path.

It is understood that the glass production raw materials comprise silica sand, sodium carbonate, limestone, dolomite, feldspar, impurity regulator, regenerated glass or colorant, wherein the silica sand is the main raw material for manufacturing glass, and the main component is silicon dioxide which is responsible for forming the basic structure of the glass; sodium carbonate is used for reducing the melting point of the silica sand, so that the energy required in the production process is reduced, and meanwhile, the sodium carbonate is also beneficial to the definition of glass; limestone is used to improve the durability and stability of glass and consists essentially of calcium carbonate; dolomite, like limestone, also serves to enhance the stability and durability of the glass; feldspar is helpful for reducing the melting point of the silica sand and improving the strength of the glass; impurity modifiers, such as sodium sulfate, for eliminating bubbles and impurities in the glass; recycled glass is broken or discarded glass, for example, in order to produce glass meeting customer requirements during production, the produced glass is often cut, and the cut glass is broken glass which can be added to new raw materials to save energy and raw materials; colorants such as iron oxide, copper oxide, cobalt oxide, etc. may be added as needed for the manufacture of colored glass.

Further, sodium carbonate, limestone, dolomite or feldspar may produce carbon dioxide gas after being decomposed by heating.

It will be appreciated that the temperature in the glass kiln 40 is between 1700 c and 2000 c, at which temperature the glass manufacturing raw materials melt into a uniform liquid glass.

In some embodiments, the glass manufacturing system 100 further includes a heat exchange device 60, the heat exchange device 60 being coupled to the flue gas duct 91 and exchanging heat with the flue gas in the flue gas duct 91. By combining the high temperature gas in the flue gas duct 91 with the heat exchange device 60, the thermal energy in the gas can be recovered, improving the energy utilization of the glass manufacturing system 100.

In particular, the heat exchange device 60 may be a flue gas-water heat exchanger. The flue gas enters the heat exchanger through a flue gas pipe 91 and exchanges heat with cold water flowing through the other side of the heat exchanger. The heat energy in the flue gas is absorbed by the water, resulting in an increase in water temperature. The water thus heated may be used in a hot water system of a factory or as industrial hot water, and may also be used to drive a steam turbine for power generation. The heat exchanger may be of shell-and-tube design, wherein flue gas flows through the tubes and water flows outside the tubes, exchanging heat through the tube walls.

In some embodiments, the glass manufacturing system 100 further includes a waste heat power generation device 70 and a split flow pipe 71, wherein a first end 711 of the split flow pipe 71 is connected to an end of the flue gas pipe 91 near the glass kiln 40, a second end 712 of the split flow pipe 71 is connected to an end of the flue gas pipe 91 near the air distribution device 20, and the waste heat power generation device 70 is disposed on the split flow pipe 71. The waste heat power generation device 70 generates power by using the high temperature gas in the flue gas duct 91, reduces the dependence on external power supply, and reduces the energy cost.

It will be appreciated that the waste heat power generation device 70 is electrically connected to the plasma generation device, and the waste heat power generation device 70 outputs power to the plasma generation device for use by the plasma generation device, so that dependence on external power supply can be reduced. Meanwhile, since the glass kiln 40 is made of refractory bricks and the cost of the refractory bricks is extremely high, the glass kiln 40 cannot be stopped once it is opened unless the refractory bricks reach the service life. The plasma generating device is supplied with power to ionize the heating gas, and can also work by means of the power supplied by the waste heat generating device 70 under the condition that an external power grid is powered off, so that the glass kiln 40 is not damaged due to the fact that a horse stops firing.

Specifically, the glass manufacturing system 100 further includes a gas recovery device 80, the gas recovery device 80 communicating with the split flow pipe 71 and recovering the recoverable gas in the split flow pipe 71. By recycling the reusable gas, the gas recycling device 80 enhances recycling of the resource and reduces waste. In the above description, since carbon dioxide gas is mainly generated during the glass manufacturing process, the gas recovery device 80 of the present embodiment may mainly recover carbon dioxide, and then the gas recovery device 80 may be a carbon dioxide capturing unit, and the flue gas cooled by the waste heat generating device 70 enters the carbon dioxide capturing unit, and carbon dioxide is captured by using an absorption method, and a common absorbent includes amine compounds such as Monoethanolamine (MEA). The flue gas contacts with the absorbent in the absorption tower, and carbon dioxide is absorbed by the absorbent. The absorbent having absorbed carbon dioxide is sent to a desorber. In the desorber, the absorbent is heated to release carbon dioxide from the absorbent. The carbon dioxide released is stored after compression and purification or used for other industrial purposes such as enhanced oil and gas recovery, carbonation in the beverage industry or production of synthetic fuels. The regenerated absorbent is recycled back to the absorber to continue capturing carbon dioxide.

Specifically, the glass manufacturing system 100 further includes a diverter valve 911, the diverter valve 911 being disposed at a first end 711 of the diverter conduit 71, the diverter valve 911 allowing the heat source gas to pass through the diverter conduit. The reversing valve 911 may control the flow direction of the heat source gas in the bypass line 71, which is critical to regulating and optimizing the heat source gas flow. Providing the reversing valve 911 allows for more efficient management of waste heat utilization and heat source gas recovery, optimizing the energy utilization of the entire glass manufacturing system 100. For example, the reversing valve 911 is closed at the initial stage of glass production to circulate the flue gas therein, thereby first satisfying the production demand. When the temperature of the flue gas is enough to meet the production requirement in the middle and later stages of production, the reversing valve 911 is opened, and the waste heat can be utilized to generate electricity or capture carbon dioxide in the flue gas. The glass manufacturing system 100 adjusts the flow of the heat source gas as desired to help reduce environmental pollution.

In some embodiments, the reprocessing device 50 includes a forming unit 51 and an annealing unit 52 that communicates with the forming unit 51 and anneals the formed glass, the forming unit 51 communicates with a discharge port of the glass kiln 40, and the annealing unit 52 communicates with a flue gas duct 91 passing through the heat exchange device 60, and flue gas in the flue gas duct 91 subjected to heat exchange and temperature reduction enters the annealing unit 52 for annealing through a backheating duct 92.

It will be appreciated that the specific temperature range of the anneal depends on the type and thickness of the glass. Different types of glass, such as soda lime glass, borosilicate glass, etc., have different transition temperatures. For common soda lime glasses, the temperature at which annealing begins is typically between 520 ℃ and 600 ℃. This temperature is slightly below the softening point of the glass. The temperature is then slowly reduced, typically in the range 400-500 ℃, to allow the stress to be gradually released. Finally, the glass will continue to cool to room temperature. In this embodiment, the temperature of the flue gas exiting the heat exchanger 60 may generally reach between 500 ℃ and 800 ℃, so that the flue gas exiting the heat exchanger 60 may be used to anneal the glass. The working efficiency of the heat exchange device 60 can be adjusted according to the required annealing temperature, for example, when the heat exchange device 60 is a flue gas-water heat exchanger, a control valve is arranged on a cold water inlet pipe of the heat exchanger, and the control valve can speed up or slow down the flow rate of water flow in a water pipe of the heat exchanger to adjust the temperature of flue gas from the heat exchanger so as to meet the required annealing temperature.

Specifically, the annealing unit 52 includes an annealing tunnel, a fume input assembly, a temperature control assembly, and a fume exhaust assembly, and the annealing unit 52 has a main body with a long tunnel-like structure and a uniformly distributed support inside for carrying the glass product to be annealed. One end of the tunnel is connected to the forming unit 51 of the glass manufacturing system 100 and the other end is provided with a final finished product outlet. One end (typically the inlet end) of the annealing tunnel is provided with a flue gas inlet assembly for introducing flue gas cooled by the heat exchange device 60 into the annealing tunnel. The flue gas input assembly comprises a pipeline, a valve and a distributor, and is used for controlling the flow and distribution of the flue gas. And a temperature sensor is arranged in the annealing tunnel and is used for monitoring the temperature in the tunnel. The temperature control device adjusts the flow and the temperature of the flue gas according to the temperature feedback so as to maintain the constant temperature required by annealing. The other end of the annealing tunnel is provided with a smoke exhaust assembly for exhausting the used smoke out of the tunnel, and the smoke exhaust assembly can be connected to an environment-friendly treatment facility and can comprise a fan and a valve.

As shown in fig. 2, in some embodiments, the heat source supply furnace 10 further includes a furnace body 12, the furnace body 12 having an air inlet 121 and an air outlet 122, and a conveying passage for communicating the air inlet 121 and the air outlet 122. The plasma generating device comprises an electrode assembly 11, the electrode assembly 11 comprises a first electrode rod 111 and a second electrode rod 112 which are arranged on a furnace body 12 at intervals, the first electrode rod 111 and the second electrode rod 112 are positioned on a first straight line, the first straight line is perpendicular to the extending direction of a conveying channel, the first electrode rod 111 is provided with a first working end, the second electrode rod 112 is provided with a second working end, the first working end and the second working end are arranged in the conveying channel, and the first working end and the second working end can keep a discharge distance. The plasma generating device is used for providing an efficient heat source for glass smelting, so that the energy utilization efficiency is improved. At the same time, plasma technology can provide accurate temperature control, helping to improve the quality of the glass.

Specifically, the above-described electrode assembly 11 includes, in addition to the first electrode rod 111 and the second electrode rod 112, a delivery mechanism for driving movement of the first electrode rod 111 and the second electrode rod 112 to achieve mutual approaching or mutual approaching of the above-described first electrode rod 111 and second electrode rod 112. Further, the delivery mechanism includes a clamping portion for clamping the portion of the first electrode rod 111 and/or the second electrode rod 112 located outside the furnace body 12, and a driving portion for driving the clamping portion to move along the first straight line. In this embodiment, the delivery mechanism is provided in two parts, each comprising one gripping portion and one driving portion. For ease of description, the two parts will be referred to as a first part and a second part, respectively. Wherein the first part is used for driving the first electrode rod 111 to move, and the second part is used for driving the second electrode rod 112 to move.

The first portion of the delivery mechanism includes a first drive portion and a first clamp portion, and the second portion of the delivery mechanism includes a second drive portion and a second clamp portion. The first driving part is disposed on the furnace body 12, and the first clamping part is disposed at an output end of the first driving part 31. The second driving part and the supporting column of the furnace body 12 are arranged on the same mounting base surface, and the second clamping part is arranged at the output end of the second driving part. In the present embodiment, the first driving part and the second driving part are each provided as a hydraulic cylinder, and the first driving part and the second driving part are moved in synchronization to ensure the moving distance of the first electrode rod 111 and the second electrode rod 112, thereby improving the control accuracy of the temperature of the heat source supply furnace 10.

Specifically, the heat source supply furnace 10 further includes a constraint mechanism 13, where the constraint mechanism 13 includes two air supply assemblies 132 and air supply assemblies 131, the two air supply assemblies 132 are respectively disposed at two ends of the conveying channel, the two air supply assemblies 132 each have an air supply member 1321 disposed around the conveying channel as a center, the air supply members 1321 of the two air supply assemblies 132 are disposed opposite to each other, and the air supply assemblies 131 are disposed outside the furnace body 12 and are used for supplying air to the air supply assemblies 132. The restraint mechanism 13 effectively restrains the heat source gas, so that the air flow and the heat in the conveying channel are not dissipated, and the utilization efficiency of the heat source supply furnace 10 is improved.

It will be appreciated that, since a closed gas circulation line is formed between the air distribution device 20, the heat source supply furnace 10 and the glass kiln 40, seals are provided between the air distribution device 20 and the air intake duct 90, between the air distribution device 20 and the air intake 121 of the heat source supply furnace 10, between the heat source supply furnace 10 and the glass kiln 40, between the glass kiln 40 and the flue gas duct 91, and between the flue gas duct 91 and the air distribution device 20. Specifically, the seals at the inlet 41 and outlet of the glass kiln 40 are made of a sealing material capable of withstanding high temperatures for a long period of time.

It will be appreciated that the flue gas duct 91 may also be in direct communication with the air inlet duct 90, this embodiment being equally effective as the embodiment in which the flue gas duct 91 is in direct communication with the air distribution device 20.

Specifically, the seal between the air distribution device 20 and the air intake duct 90 uses a flange connection, in combination with a high temperature resistant gasket or seal. The sealing between the air distribution device 20 and the air inlet 121 of the heat source supply furnace 10 adopts a flange interface or a welding mode, and is made of sealing materials with high temperature resistance and chemical corrosion resistance. The seal between the heat source supply furnace 10 and the glass kiln 40 uses expansion joints or flexible connections to account for thermal expansion and equipment movement. The seal between the glass kiln 40 and the fume duct 91 uses a high temperature durable sealing material such as asbestos or ceramic fiber sealing tape. The seal between the flue gas duct 91 and the air distribution device 20 is similar to the seal of the air intake duct 90, and a flange interface and a high temperature sealing material may be used.

In some embodiments, the glass manufacturing system 100 further includes a double valve arrangement, for example, at both the feed port 41 of the glass kiln 40 and the finish outlet of the annealing unit 52, to prevent gas leakage in the gas lines that are closed during feeding or discharging. Specifically, the double valve device comprises a main valve and an auxiliary valve, and a containing cavity is arranged between the main valve and the auxiliary valve. Taking feeding as an example, when feeding is required, the main valve is opened, the glass production raw material is introduced into the accommodating chamber, then the main valve is closed, and the auxiliary valve is opened, so that the glass production raw material can be introduced into the glass kiln 40.

It will be appreciated that because uniform heating is required within the glass kiln 40, a buffer chamber 42 is provided between the air outlets 122 of the heat source supply furnace 10 and the glass kiln 40, and then the buffer chamber 42 is connected to the side walls of the glass kiln 40 through a plurality of heat supply channels 421, so that the heated temperature within the glass kiln 40 is uniform.

In some embodiments, the glass manufacturing system 100 further includes a control device responsible for managing the entire glass manufacturing process, including the steps of melting, shaping, and annealing, coupled to the temperature sensor, the delivery and confinement mechanisms 13 of the plasma generating device, the reversing valve 911, and the like. During the melting process, the temperature and the flow of the circulating ionization heating gas are accurately regulated by using a control device, so that the uniformity and the efficiency of the glass melting process are ensured. The energy consumption and environmental parameters in the melting process are monitored by the sensors, and the operating parameters are automatically adjusted to optimize the energy utilization. During the forming process, the control device automatically adjusts parameters of the forming unit 51, such as temperature, speed and pressure, according to the properties of the molten glass. Quality standards in the forming process, such as dimensional accuracy and surface quality, are monitored and timely adjusted to meet product specifications. During the annealing process, the flue gas cooled by the heat exchange device 60 is used for annealing treatment under control, and the control device adjusts the temperature and the flow rate of the flue gas so as to ensure the uniformity and the effectiveness of the annealing process. The temperature change of the glass during the annealing process is monitored by a sensor, and the glass is automatically adjusted to reduce the internal stress.

As shown in fig. 3, this embodiment also provides a glass preparation method, which includes the following steps:

melting a glass production raw material in a heat source gas of cyclic ionization;

shaping the melted liquid glass;

And annealing the glass after the molding treatment in heat-exchange heat source gas.

Specifically, the temperature of the ionization-heated heat source gas is 1700 ℃ to 2000 ℃. The annealing temperature of the heat-exchanged heat source gas is 400-600 ℃.

It will be appreciated that the glass manufacturing process uses a cyclically ionized heat source gas to melt the feedstock to increase energy utilization efficiency, as the cyclically used gas reduces overall energy consumption. And the gas is recycled and the heat-exchanged flue gas is utilized for annealing, so that the exhaust emission and the energy waste are further reduced.

It will be appreciated that the glass manufacturing process also includes cooling and further post-treatment. The cooling is to allow the glass to stand for a period of time after annealing, cool the glass to room temperature, solidify the glass completely at this time, and then carry out further post-treatment steps such as cutting, grinding, polishing, coating and the like on a conveyor belt so as to meet the requirements of the final product.

In some embodiments, the glass production raw material comprises silica sand and limestone, and the gas heated by cyclic ionization is carbon dioxide. Because the gas generated after the glass raw material is heated is mainly carbon dioxide, part of the carbon dioxide can be captured and stored for reuse, and the other part of the carbon dioxide enters the plasma generating device again for ionization heating.

It can be understood that the glass preparation method further comprises the step of generating electricity by waste heat of the gas subjected to heat exchange, wherein one part of the gas subjected to heat exchange is used for annealing treatment, and the other part of the gas is used for generating electricity by waste heat.

Specifically, the step of generating electricity from waste heat includes the step of first capturing the waste heat to capture the high temperature exhaust gas or liquid discharged from the industrial process using a heat exchanger or similar device. And step two, heat energy conversion is carried out to transfer the captured heat energy to a waste heat power generation system through a heat carrier (such as water or hot oil). The thermal energy is used to generate steam or heat other working media. And step three, the power generation process uses steam or hot gas generated by heat energy to drive the turbine to rotate. The turbine is connected with a generator, and rotates the generator to generate electric energy. And step four, waste heat is discharged, and the generated or gas is continuously returned to the heat source supply furnace 10 through a pipeline for ionization heating.

The glass manufacturing system 100 of the present embodiment uses a plasma generating device as a heat source, replaces conventional fossil fuel, and reduces the demand for fossil fuel, thereby reducing carbon emissions from the source. Meanwhile, the closed gas circulation route further reduces energy consumption and carbon emission, and has remarkable significance for achieving the aim of carbon neutralization in the industrial production process.

The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims (10)

1. A glass manufacturing system, comprising:

a closable intake valve;

The air distribution device is communicated with the air inlet valve through an air inlet pipeline;

A heat source supply furnace comprising a plasma generating device, wherein an air inlet of the heat source supply furnace is communicated with the air distribution device, and the plasma generating device is used for ionizing the gas conveyed by the air distribution device to form heat source gas;

the glass kiln is provided with a feed inlet, the glass kiln is communicated with an air outlet of the heat source supply furnace and melts glass production raw materials entering from the feed inlet through the heat source gas, the glass kiln is communicated with the air distribution device through a flue gas pipeline, and a closed gas circulation route can be formed among the air distribution device, the heat source supply furnace and the glass kiln;

and the reprocessing device is communicated with the discharge port of the glass kiln.

2. The glass manufacturing system of claim 1, further comprising a heat exchange device coupled to the flue gas duct and exchanging heat with a gas in the flue gas duct.

3. The glass manufacturing system of claim 1, further comprising a waste heat power generation device and a split flow pipe, wherein a first end of the split flow pipe is connected to an end of the flue gas pipe near the glass kiln, a second end of the split flow pipe is connected to an end of the flue gas pipe near the air distribution device, and the waste heat power generation device is arranged on the split flow pipe.

4. The glass manufacturing system of claim 3, further comprising a gas recovery device in communication with the split flow conduit and recovering recoverable gas in the split flow conduit.

5. The glass manufacturing system of claim 3, further comprising a diverter valve disposed at the first end and allowing gas to pass through the diverter line.

6. The glass preparation system according to claim 2, wherein the reprocessing device comprises a forming unit and an annealing unit which is communicated with the forming unit and anneals the formed glass, the forming unit is communicated with a discharge hole of the glass kiln, the annealing unit is communicated with the flue gas pipeline passing through the heat exchange device, and the gas in the flue gas pipeline subjected to heat exchange and temperature reduction enters the annealing unit for annealing.

7. The glass manufacturing system according to claim 1, wherein the heat source supply furnace further comprises a furnace body having the air inlet and the air outlet, and a conveyance passage for communicating the air inlet and the air outlet;

The plasma generating device comprises an electrode assembly, wherein the electrode assembly comprises a first electrode rod and a second electrode rod which are arranged on the furnace body at intervals, the first electrode rod and the second electrode rod are positioned on a first straight line, and the first straight line is perpendicular to the extending direction of the conveying channel; the first electrode rod is provided with a first working end, the second electrode rod is provided with a second working end, the first working end and the second working end are arranged in the conveying channel, and a discharge distance can be kept between the first working end and the second working end.

8. The glass manufacturing system of claim 7, wherein the heat source supply furnace further comprises a restraining mechanism comprising:

the two air supply assemblies are respectively arranged at two ends of the conveying channel, each air supply assembly is provided with an air supply piece which is arranged around the conveying channel as a center, and the directions of the air supply pieces of the two air supply assemblies are opposite;

the air supply assembly is arranged outside the furnace body and used for supplying air to the air supply assembly.

9. A glass manufacturing method applied to the glass manufacturing system according to any one of claims 1 to 8, comprising the steps of:

melting a glass production raw material in the circulated heat source gas;

shaping the melted liquid glass;

and annealing the glass after the forming treatment in the heat-exchanged heat source gas.

10. The method of claim 9, wherein the glass production raw material comprises silica sand and limestone, and the heat source gas is carbon dioxide.