Glass preparation system and glass preparation method

Abstract

The present invention relates to the technical field of glass preparation, and specifically to a glass preparation system and a glass preparation method. The glass preparation system includes a heat source supply furnace, an air distribution device, a closable air intake valve, a glass kiln and a reprocessing device, wherein the air distribution device is connected to the air intake valve through an air intake pipe, the heat source supply furnace includes a plasma generator, and the air inlet of the heat source supply furnace is connected to the air distribution device, and the plasma generator is used to ionize the gas transported by the air distribution device to form a heat source gas. The glass kiln is connected to the air outlet of the heat source supply furnace and melts the glass production raw materials through the heat source gas. The glass kiln is connected to the air distribution device through a flue gas pipe, and a closed gas circulation route can be formed between the air distribution device, the heat source supply furnace and the glass kiln. The glass preparation system according to the present invention can recycle the gas used to melt the glass production raw materials and the gas generated when melting the production raw materials, thereby reducing waste gas emissions.

Description

Technical Field

[0001] The present invention relates to the technical field of glass preparation, and in particular to a glass preparation system and a glass preparation method. Background Art

[0002] In traditional glass production kiln firing, natural gas is mainly used as fuel. This combustion process requires sufficient air and oxygen, and is mixed with the material for combustion. The natural gas combustion process produces a variety of waste gases, such as SO2, CO, CO2, NO X Some of these waste gases are directly discharged, and some are discharged after dust removal or purification, all of which cause different degrees of pollution to the environment. In addition, the efficiency of waste heat utilization of waste gas generated by kilns in the prior art is not high. Summary of the invention

[0003] The purpose of the present invention is to at least solve the problem that waste gas generated during glass preparation may cause environmental pollution. This purpose is achieved through the following technical solutions:

[0004] A first aspect of the present invention provides a glass preparation system, comprising:

[0005] Closable intake valve;

[0006] An air distribution device, the air distribution device is connected to the air intake valve through an air intake duct;

[0007] A heat source supply furnace, the heat source supply furnace comprising a plasma generator, and the air inlet of the heat source supply furnace is connected to the air distribution device, the plasma generator is used to ionize the air delivered by the air distribution device to form a heat source gas;

[0008] A glass kiln, wherein the glass kiln is provided with a feed port, the glass kiln is connected to the gas outlet of the heat source supply furnace and melts the glass production raw materials entering from the feed port through the heat source gas, and the glass kiln is connected to the air distribution device through a flue gas duct, and a closed gas circulation route can be formed among the air distribution device, the heat source supply furnace and the glass kiln;

[0009] A reprocessing device is connected to the discharge port of the glass kiln.

[0010] The glass preparation system according to the present invention uses a plasma generator as a part of the heat source supply furnace, so that the glass preparation system can use ionization heating technology to melt glass raw materials. Compared with the traditional combustion furnace, the use of the plasma generator can greatly reduce the generation of harmful exhaust gas. At the same time, since the air distribution device is connected to the heat source supply furnace, the heat source supply furnace is connected to the glass kiln, and the glass kiln is connected to the air distribution device through the flue gas duct, and since the air distribution device is connected to the closable air intake valve, a closed gas circulation route can be formed between the air distribution device, the heat source supply furnace and the glass kiln. The glass preparation system can recycle the gas used to melt the glass production raw materials and the gas generated when melting the glass production raw materials, reducing the demand for fresh gas and further reducing exhaust gas emissions.

[0011] In addition, the glass preparation system according to the present invention may also have the following additional technical features:

[0012] In some embodiments of the present invention, the glass preparation system further includes a heat exchange device, which is connected to the flue gas duct and exchanges heat with the gas in the flue gas duct.

[0013] In some embodiments of the present invention, the glass preparation system also includes a waste heat power generation device and a diversion pipe, the first end of the diversion pipe is connected to an end of the flue gas pipe close to the glass kiln, the second end of the diversion pipe is connected to an end of the flue gas pipe close to the air distribution device, and the waste heat power generation device is arranged on the diversion pipe.

[0014] In some embodiments of the present invention, the glass preparation system further includes a gas recovery device, which is connected to the branch pipe and recovers recoverable gas in the branch pipe.

[0015] In some embodiments of the present invention, the glass preparation system further comprises a reversing valve, which is disposed at the first end and allows gas to pass through the diversion pipeline.

[0016] In some embodiments of the present invention, the reprocessing device includes a molding unit and an annealing unit connected to the molding unit and annealing the molded glass. The molding unit is connected to the discharge port of the glass kiln, and the annealing unit is connected to the flue gas duct passing through the heat exchange device. The gas in the flue gas duct that has undergone heat exchange and cooling enters the annealing unit for annealing.

[0017] In some embodiments of the present invention, the heat source supply furnace further comprises a furnace body, wherein the furnace body has the air inlet and the air outlet, and a conveying channel for connecting the air inlet and the air outlet;

[0018] The plasma generating device includes an electrode assembly, and the electrode assembly includes a first electrode rod and a second electrode rod arranged at an interval on the furnace body, the first electrode rod and the second electrode rod are located on a first straight line, and the first straight line is perpendicular to the extension direction of the conveying channel; the first electrode rod has a first working end, and the second electrode rod has a second working end, the first working end and the second working end are arranged inside the conveying channel, and a discharge distance can be maintained between the first working end and the second working end.

[0019] In some embodiments of the present invention, the heat source supply furnace further includes a constraint mechanism, and the constraint mechanism includes:

[0020] Air supply components, the number of which is two and which are respectively arranged at the two ends of the conveying channel, the two air supply components each having an air supply member arranged around the conveying channel as the center, and the air supply members of the two air supply components are arranged in opposite directions;

[0021] An air supply component is arranged outside the furnace body and is used to supply air to the air supply component.

[0022] A second aspect of the present invention provides a glass preparation method, which is applied to the above-mentioned glass preparation system and comprises the following steps:

[0023] Melting glass production raw materials in the circulating heat source gas;

[0024] The melted liquid glass is molded;

[0025] The glass after the forming process is annealed in the heat source gas after heat exchange.

[0026] In some embodiments of the present invention, the glass production raw materials include silica sand and limestone, and the circulating ionized heated gas is carbon dioxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0028] Figure 1 Schematically shows a schematic diagram of a glass preparation system according to an embodiment of the present invention;

[0029] Figure 2 Schematically shows a schematic structural diagram of a heat source supply furnace according to an embodiment of the present invention;

[0030] Figure 3 The present invention is a flow chart of a method for preparing glass according to an embodiment of the present invention.

[0031] The reference numerals are as follows:

[0032] 100. Glass preparation system;

[0033] 10. heat source supply furnace; 11. electrode assembly; 111. first electrode rod; 112. second electrode rod; 12. furnace body; 121. air inlet; 122. air outlet; 13. restraint mechanism; 131. air supply assembly; 132. air supply assembly; 1321. air supply member;

[0034] 20. Air distribution device; 30. Air intake valve; 40. Glass kiln; 41. Feed inlet; 42. Buffer chamber; 421. Heat supply channel; 50. Reprocessing device; 51. Molding unit; 52. Annealing unit; 60. Heat exchange device; 70. Waste heat power generation device; 71. Diversion pipe; 711. First end; 712. Second end; 80. Gas recovery device; 90. Air intake pipe; 91. Flue gas pipe; 911. Reversing valve; 92. Heat recovery pipe. DETAILED DESCRIPTION

[0035] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0036] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0037] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0038] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0039] like Figure 1 to Figure 2 As shown, according to an embodiment of the present invention, a glass preparation system 100 is proposed, comprising a heat source supply furnace 10, an air distribution device 20, a closable air intake valve 30, a glass furnace 40 and a reprocessing device 50, wherein the air distribution device 20 is connected to the air intake valve 30 through an air intake pipe 90, the heat source supply furnace 10 comprises a plasma generator, and the air inlet 121 of the heat source supply furnace 10 is connected to the air distribution device 20, and the plasma generator is used to ionize the gas transported by the air distribution device 20 to form a heat source gas. The glass furnace 40 is provided with a feed port 41, and glass production raw materials are put in from the feed port 41. The glass kiln 40 is connected to the gas outlet 122 of the heat source supply furnace 10 and melts the glass production raw materials entering from the feed port 41 through the heat source gas, and the glass kiln 40 is connected to the air distribution device 20 through the flue gas duct 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 connected from the discharge port of the glass kiln 40, and the reprocessing device 50 performs molding and annealing on the liquid glass.

[0040] According to the glass preparation system 100 of the present invention, by using a plasma generator as a part of the heat source supply furnace 10, the glass preparation system 100 can use ionization heating technology to melt glass raw materials. Compared with the traditional combustion furnace, the use of the plasma generator can greatly reduce the harmful exhaust gas generated. At the same time, since the air distribution device 20 is connected to the heat source supply furnace 10, the heat source supply furnace 10 is connected to the glass furnace 40, and the glass furnace 40 is connected to the air distribution device 20 through the flue gas pipeline 91, and since the air distribution device 20 is connected to the closable air intake valve 30, a closed gas circulation route can be formed between the air distribution device 20, the heat source supply furnace 10 and the glass furnace 40. The glass preparation system 100 can recycle the heat source gas used to melt the glass production raw materials and the gas generated when melting the glass production raw materials, reducing the demand for fresh gas and further reducing exhaust gas emissions. The closed gas circulation route can be formed because the heat source supply furnace 10 uses a plasma generator as a heat source, so that the plasma generator can continuously ionize the gas in the gas circulation route.

[0041] It is understandable that the raw materials for glass production include silica sand, sodium carbonate, limestone, dolomite, feldspar, impurity adjusters, recycled glass or colorants, among which silica sand is the main raw material for making glass, and its main component is silicon dioxide, which is responsible for forming the basic structure of glass; sodium carbonate is used to lower the melting point of silica sand, thereby reducing the energy required in the production process, and it also contributes to the clarity of the glass; limestone is used to improve the durability and stability of glass, and it is mainly composed of calcium carbonate; dolomite is similar to limestone and is also used to enhance the stability and durability of glass; feldspar helps to lower the melting point of silica sand and improve the strength of glass; impurity adjusters, such as sodium sulfate, are used to eliminate bubbles and impurities in the glass; recycled glass is broken or discarded glass. For example, in order to prepare glass that meets customer needs during the production process, the glass after production is often cut. The cut glass is broken glass, which can be added to new raw materials to save energy and raw materials; colorants can be added as needed, such as iron oxide, copper oxide, cobalt oxide, etc., which are used to make colored glass.

[0042] Furthermore, sodium carbonate, limestone, dolomite or feldspar generates carbon dioxide gas when decomposed by heat.

[0043] It is understandable that the temperature in the glass furnace 40 is between 1700° C. and 2000° C., at which temperature the glass production raw materials will melt into uniform liquid glass.

[0044] In some embodiments, the glass preparation system 100 further includes a heat exchange device 60, which is connected to the flue gas duct 91 and exchanges 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 heat energy in the gas can be recovered, thereby improving the energy utilization rate of the glass preparation system 100.

[0045] Specifically, the heat exchange device 60 can be a flue gas-water heat exchanger. Flue gas enters the heat exchanger through the flue gas duct 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, causing the water temperature to rise. The heated water can be used in the factory's hot water system or as industrial hot water, and can also be used to drive a steam turbine to generate electricity. This heat exchanger can adopt a shell and tube design, in which the flue gas flows through the tube and the water flows outside the tube to exchange heat through the tube wall.

[0046] In some embodiments, the glass preparation system 100 further includes a waste heat power generation device 70 and a shunt pipe 71, wherein a first end 711 of the shunt pipe 71 is connected to an end of the flue gas pipe 91 close to the glass furnace 40, and a second end 712 of the shunt pipe 71 is connected to an end of the flue gas pipe 91 close to the air distribution device 20, and the waste heat power generation device 70 is disposed on the shunt pipe 71. The waste heat power generation device 70 generates electricity using high-temperature gas in the flue gas pipe 91, thereby reducing dependence on external power supply and reducing energy costs.

[0047] It is understandable that the waste heat power generation device 70 is electrically connected to the plasma generator, and the waste heat power generation device 70 outputs electricity to the plasma generator for use by the plasma generator, which can reduce dependence on external power supply. At the same time, since the glass kiln 40 is made of heat-resistant bricks, and the cost of heat-resistant bricks is extremely high, the glass kiln 40 cannot be stopped once it is started, unless the refractory bricks have reached the end of their service life. The plasma generator is supplied with electricity to ionize and heat the gas. In the event of a power outage in the external power grid, the plasma generator can still rely on the electricity supplied by the waste heat power generation device 70 to work, so that it does not immediately stop and cause damage to the glass kiln 40.

[0048] Specifically, the glass preparation system 100 also includes a gas recovery device 80, which is connected to the shunt pipe 71 and recovers the recyclable gas in the shunt pipe 71. By recovering the reusable gas, the gas recovery device 80 enhances the recycling of resources and reduces waste. It is mentioned above that carbon dioxide gas is mainly produced in the glass preparation process, so the gas recovery device 80 of this embodiment can mainly recover carbon dioxide. Then the gas recovery device 80 can be a carbon dioxide capture unit. The flue gas cooled by the waste heat power generation device 70 enters the carbon dioxide capture unit. The absorption method is usually used to capture carbon dioxide. Common absorbents include amine compounds such as monoethanolamine (MEA). The flue gas contacts the absorbent in the absorption tower, and carbon dioxide is absorbed by the absorbent. The absorbent that absorbs carbon dioxide is sent to the desorption tower. In the desorption tower, the absorbent is heated to release carbon dioxide from the absorbent. The released carbon dioxide is stored or used for other industrial purposes after compression and purification, such as enhancing oil and gas recovery, carbonation in the beverage industry, or producing synthetic fuels. The regenerated absorbent circulates back to the absorption tower to continue to capture carbon dioxide.

[0049] Specifically, the glass preparation system 100 also includes a reversing valve 911, which is arranged at the first end 711 of the shunt pipe 71, and the reversing valve 911 can allow the heat source gas to pass through the shunt pipeline. The reversing valve 911 can control the flow direction of the heat source gas in the shunt pipe 71, which is crucial for adjusting and optimizing the flow of the heat source gas. The setting of the reversing valve 911 can more effectively manage the waste heat utilization and heat source gas recovery, and optimize the energy utilization of the entire glass preparation system 100. For example, in the early stage of glass production, the reversing valve 911 is closed to allow the flue gas to circulate inside to first meet the production needs. When the flue gas temperature is sufficient to meet the production needs in the middle and late stages of production, the reversing valve 911 is opened, and the waste heat can be used to generate electricity or capture carbon dioxide in the flue gas. The glass preparation system 100 adjusts the flow of the heat source gas according to demand, which helps to reduce environmental pollution.

[0050] In some embodiments, the reprocessing device 50 includes a molding unit 51 and an annealing unit 52 connected to the molding unit 51 and annealing the molded glass. The molding unit 51 is connected to the discharge port of the glass kiln 40, and the annealing unit 52 is connected to the flue gas duct 91 passing through the heat exchange device 60. The flue gas that has undergone heat exchange and cooling in the flue gas duct 91 enters the annealing unit 52 through the heat recovery duct 92 for annealing.

[0051] It is understood that the specific temperature range of annealing 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 glass, the temperature at which annealing starts is generally between 520°C and 600°C. This temperature is slightly lower than the softening point of the glass. Then, the temperature will slowly decrease, usually in the range of 400°C to 500°C, 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 coming out of the heat exchange device 60 can generally reach between 500°C and 800°C, so the flue gas coming out of the heat exchange device 60 can 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 set on the cold water inlet pipe of the heat exchanger. The control valve can speed up or slow down the flow rate of the water flow in the water pipe of the heat exchanger to adjust the temperature of the flue gas coming out of the heat exchanger, thereby meeting the required annealing temperature.

[0052] Specifically, the annealing unit 52 includes an annealing tunnel, a smoke input component, a temperature control component and a smoke exhaust component. The main body of the annealing unit 52 is a long tunnel-like structure with evenly distributed brackets inside for carrying the glass products to be annealed. One end of the tunnel is connected to the molding unit 51 of the glass preparation system 100, and the other end is provided with a final finished product outlet. A smoke input component is provided at one end (usually the entrance end) of the annealing tunnel for introducing the smoke after cooling by the heat exchange device 60 into the annealing tunnel. The smoke input component includes a pipe, a valve and a distributor for controlling the flow and distribution of the smoke. A temperature sensor is installed inside the annealing tunnel for monitoring the temperature in the tunnel. The temperature control device adjusts the flow and temperature of the smoke according to temperature feedback to maintain the constant temperature required for annealing. A smoke exhaust component is provided at the other end of the annealing tunnel for discharging the used smoke out of the tunnel, which can be connected to an environmental protection treatment facility. The smoke exhaust component can include a fan and a valve.

[0053] like Figure 2As shown, in some embodiments, the heat source supply furnace 10 also includes a furnace body 12, the furnace body 12 has an air inlet 121 and an air outlet 122, and a conveying channel for connecting the air inlet 121 and the air outlet 122. The plasma generating device includes an electrode assembly 11, the electrode assembly 11 includes a first electrode rod 111 and a second electrode rod 112 arranged at intervals on the furnace body 12, the first electrode rod 111 and the second electrode rod 112 are located on a first straight line, the first straight line is perpendicular to the extension direction of the conveying channel, the first electrode rod 111 has a first working end, the second electrode rod 112 has a second working end, the first working end and the second working end are arranged inside the conveying channel, and the first working end and the second working end can maintain a discharge distance. Using a plasma generating device provides an efficient heat source for glass melting, thereby improving energy utilization efficiency. At the same time, plasma technology can provide precise temperature control, which helps to improve the quality of glass.

[0054] Specifically, in addition to the first electrode rod 111 and the second electrode rod 112, the electrode assembly 11 also includes a delivery mechanism, which is used to drive the movement of the first electrode rod 111 and the second electrode rod 112 to achieve the first electrode rod 111 and the second electrode rod 112 to move closer to or farther away from each other. Further, the delivery mechanism includes a clamping portion and a driving portion, wherein the clamping portion is used to clamp the first electrode rod 111 and / or the second electrode rod 112 located outside the furnace body 12, and the driving portion is used to drive the clamping portion to move along the first straight line. In this embodiment, the delivery mechanism is configured as two parts, each of which includes a clamping portion and a driving portion. For ease of description, the two parts are respectively referred to as the first part and the second part. Among them, the first part is used to drive the first electrode rod 111 to move, and the second part is used to drive the second electrode rod 112 to move.

[0055] The first part of the delivery mechanism includes a first driving part and a first clamping part, and the second part of the delivery mechanism includes a second driving part and a second clamping part. The first driving part is arranged on the furnace body 12, and the first clamping part is arranged at the output end of the first driving part 31. The second driving part and the support column of the furnace body 12 are arranged on the same mounting base, and the second clamping part is arranged at the output end of the second driving part. In this embodiment, the first driving part and the second driving part are both configured as hydraulic cylinders, and the first driving part and the second driving part move synchronously 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.

[0056] Specifically, the heat source supply furnace 10 further includes a constraint mechanism 13, which includes an air supply assembly 132 and an air supply assembly 131. There are two air supply assemblies 132, which are respectively arranged at both ends of the conveying channel. Both air supply assemblies 132 have air supply members 1321 arranged around the conveying channel as the center, and the air supply members 1321 of the two air supply assemblies 132 are arranged in opposite directions. The air supply assembly 131 is arranged outside the furnace body 12 and is used to supply air to the air supply assembly 132. The constraint mechanism 13 effectively constrains the heat source gas so that the airflow and heat in the conveying channel do not escape, thereby improving the utilization efficiency of the heat source supply furnace 10.

[0057] It is understandable that, since a closed gas circulation circuit is to be formed between the air distribution device 20, the heat source supply furnace 10 and the glass furnace 40, seals are provided between the air distribution device 20 and the air inlet duct 90, between the air distribution device 20 and the air inlet 121 of the heat source supply furnace 10, between the heat source supply furnace 10 and the glass furnace 40, between the glass furnace 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 feed inlet 41 and the discharge port of the glass furnace 40 are made of sealing materials that can withstand high temperatures for a long time.

[0058] It is understandable that the smoke duct 91 may also be directly connected to the air intake duct 90 , and this embodiment has the same effect as the embodiment in which the smoke duct 91 is directly connected to the air distribution device 20 .

[0059] Specifically, the seal between the air distribution device 20 and the air inlet duct 90 uses a flange connection with a high-temperature resistant gasket or sealing ring. The seal between the air distribution device 20 and the air inlet 121 of the heat source supply furnace 10 uses a flange interface or welding method, as well as a high-temperature resistant and chemically resistant sealing material. The seal between the heat source supply furnace 10 and the glass kiln 40 uses an expansion joint or a flexible connection to cope with thermal expansion and equipment movement. The seal between the glass kiln 40 and the flue gas duct 91 uses a high-temperature and 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 inlet duct 90, and a flange interface and a high-temperature sealing material can be used.

[0060] In some embodiments, the glass preparation system 100 further includes a double valve device, for example, a double valve device is provided at the feed port 41 of the glass furnace 40 and the finished product outlet of the annealing unit 52, which can prevent gas leakage in the closed gas pipeline during feeding or discharging. Specifically, the double valve device includes a main valve and an auxiliary valve, and a receiving cavity is provided 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 materials first enter the receiving cavity, and then the main valve is closed, and then the auxiliary valve is opened, and the glass production raw materials can enter the glass furnace 40.

[0061] It is understandable that because the glass kiln 40 requires uniform heating, a buffer chamber 42 is provided between the air outlet 122 of the heat source supply furnace 10 and the glass kiln 40, and then the buffer chamber 42 is connected to the side wall of the glass kiln 40 through multiple heat supply channels 421, so that the heating temperature inside the glass kiln 40 is consistent.

[0062] In some embodiments, the glass preparation system 100 further includes a control device, which is responsible for managing the entire glass preparation process, including steps such as melting, forming and annealing. The control device is connected to the temperature sensor, the delivery mechanism and the constraint mechanism 13 of the plasma generator, the reversing valve 911, etc. During the melting process, the control device is used to accurately adjust the temperature and flow rate of the circulating ionized heating gas to ensure the uniformity and efficiency of the glass melting process. The energy consumption and environmental parameters during the melting process are monitored by sensors, and the operating parameters are automatically adjusted to optimize energy utilization. During the forming process, the control device automatically adjusts the parameters of the forming unit 51 according to the properties of the molten glass, such as temperature, speed and pressure. The quality standards in the forming process, such as dimensional accuracy and surface quality, are monitored and adjusted in time to meet the product specifications. During the annealing process, the flue gas cooled by the heat exchange device 60 is annealed under control, and the control device adjusts the temperature and flow rate of the flue gas to ensure the uniformity and effectiveness of the annealing process. The temperature change of the glass during the annealing process is monitored by sensors, and automatically adjusted to reduce internal stress.

[0063] like Figure 3 As shown, this embodiment also proposes a glass preparation method, comprising the following steps:

[0064] Melting glass production raw materials in circulating ionized heat source gas;

[0065] The melted liquid glass is molded;

[0066] The formed glass is annealed in the heat source gas after heat exchange.

[0067] Specifically, the temperature of the heat source gas for ionization heating is 1700° C.-2000° C. The temperature of the heat source gas for annealing after heat exchange is 400° C.-600° C.

[0068] It is understood that the glass preparation method using the circulating ionized heat source gas to melt the raw materials can improve energy efficiency because the recycled gas reduces the overall energy consumption. By recycling the gas and using the flue gas after heat exchange for annealing, waste gas emissions and energy waste are further reduced.

[0069] It is understood that the glass preparation method also includes cooling and further post-processing. Cooling is to let the glass stand for a period of time after annealing to cool it to room temperature, at which time the glass is completely solidified, and then further post-processing is carried out on the conveyor belt, such as cutting, grinding, polishing, coating and other steps to achieve the requirements of the final product.

[0070] In some embodiments, the glass production raw materials include silica sand and limestone, and the circulating ionized and heated gas is carbon dioxide. Since the gas generated after the glass production raw materials are heated is mainly carbon dioxide, a portion of the carbon dioxide can be captured and stored for reuse, and the other portion of the carbon dioxide enters the plasma generator again for ionization heating.

[0071] It is understandable that the glass preparation method further includes the step of generating electricity from waste heat of the gas after heat exchange, wherein a part of the gas after heat exchange is used for annealing treatment, and the other part is used for generating electricity from waste heat.

[0072] Specifically, the steps of waste heat power generation include step one, capturing waste heat using a heat exchanger or similar device to capture high-temperature exhaust gas or liquid discharged from an industrial process. Step two, thermal energy conversion transfers the captured thermal energy to the 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. Step three, the power generation process uses the steam or hot gas generated by the thermal energy to drive the turbine to rotate. The turbine is connected to a generator, which rotates the generator to generate electricity. Step four, the waste heat is discharged, and the gas after power generation continues to return to the heat source through a pipeline to supply the furnace 10 for ionization heating.

[0073] The glass preparation system 100 of this embodiment uses a plasma generator as a heat source, replacing traditional fossil fuels, reducing the demand for fossil fuels, and thus reducing carbon emissions at the source. At the same time, the closed gas circulation route further reduces energy consumption and carbon emissions, which is of great significance for achieving the goal of carbon neutrality in the industrial production process.

[0074] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A glass preparation system, characterized in that: include: Closable intake valve; An air distribution device, the air distribution device is connected to the air intake valve through an air intake duct; A heat source supply furnace, the heat source supply furnace comprising a plasma generating device, a furnace body and a restraining mechanism, the furnace body having an air inlet and an air outlet, and a conveying channel for connecting 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 arranged at intervals on the furnace body, wherein the first electrode rod and the second electrode rod are located on a first straight line, and the first straight line is perpendicular to the extending direction of the conveying channel; the first electrode rod has a first working end, and the second electrode rod has a second working end, wherein the first working end and the second working end are arranged inside the conveying channel, and a discharge distance can be maintained between the first working end and the second working end; The restraining mechanism comprises an air supply assembly and an air supply assembly, the number of the air supply assemblies is two, and they are respectively arranged at the two ends of the conveying channel, the two air supply assemblies each have an air supply member arranged around the conveying channel as the center, and the air supply members of the two air supply assemblies are arranged in opposite directions; the air supply assembly is arranged outside the furnace body, and is used to supply air to the air supply assembly; The air inlet of the heat source supply furnace is connected to the air distribution device, and the plasma generating device is used to ionize the gas delivered by the air distribution device to form heat source gas; A glass kiln, wherein the glass kiln is provided with a feed port, the glass kiln is connected to the gas outlet of the heat source supply furnace and melts the glass production raw materials entering from the feed port through the heat source gas, and the glass kiln is connected to the air distribution device through a flue gas duct, and a closed gas circulation route can be formed among the air distribution device, the heat source supply furnace and the glass kiln; A reprocessing device is connected to the discharge port of the glass kiln.

2. The glass preparation system according to claim 1, characterized in that: The glass preparation system further comprises a heat exchange device, which is connected to the flue gas pipeline and exchanges heat with the gas in the flue gas pipeline.

3. The glass preparation system according to claim 1, characterized in that: The glass preparation system also includes a waste heat power generation device and a diversion pipe, the first end of the diversion pipe is connected to an end of the flue gas pipe close to the glass kiln, the second end of the diversion pipe is connected to an end of the flue gas pipe close to the air distribution device, and the waste heat power generation device is arranged on the diversion pipe.

4. The glass preparation system according to claim 3, characterized in that: The glass preparation system further comprises a gas recovery device, which is connected to the branch pipeline and recovers the recoverable gas in the branch pipeline.

5. The glass preparation system according to claim 3, characterized in that: The glass preparation system further includes a reversing valve, which is disposed at the first end and allows gas to pass through the diversion pipeline.

6. The glass preparation system according to claim 2, characterized in that: The reprocessing device includes a molding unit and an annealing unit connected to the molding unit and annealing the molded glass. The molding unit is connected to the discharge port of the glass kiln, and the annealing unit is connected to the flue gas duct passing through the heat exchange device. The gas in the flue gas duct that has undergone heat exchange and cooling enters the annealing unit for annealing.

7. A glass preparation method, applied to the glass preparation system according to any one of claims 1 to 6, characterized in that: The steps include: Melting glass production raw materials in the circulating heat source gas; The melted liquid glass is molded; The glass after the forming process is annealed in the heat source gas after heat exchange.

8. The glass preparation method according to claim 7, characterized in that: The glass production raw materials include silica sand and limestone, and the heat source gas is carbon dioxide.

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