CN113511799A - Heat value control system and heat value control method of glass melting furnace combustion system - Google Patents
Heat value control system and heat value control method of glass melting furnace combustion system Download PDFInfo
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- CN113511799A CN113511799A CN202110741665.8A CN202110741665A CN113511799A CN 113511799 A CN113511799 A CN 113511799A CN 202110741665 A CN202110741665 A CN 202110741665A CN 113511799 A CN113511799 A CN 113511799A
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- gas fuel
- value
- gas
- mixed gas
- conveying unit
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 43
- 239000011521 glass Substances 0.000 title claims abstract description 38
- 238000002844 melting Methods 0.000 title claims abstract description 32
- 230000008018 melting Effects 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 204
- 239000000446 fuel Substances 0.000 claims abstract description 136
- 239000011261 inert gas Substances 0.000 claims abstract description 52
- 230000001105 regulatory effect Effects 0.000 claims abstract description 44
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 13
- 238000005265 energy consumption Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 15
- 230000001276 controlling effect Effects 0.000 claims description 6
- 230000020169 heat generation Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/24—Automatically regulating the melting process
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Melting And Manufacturing (AREA)
Abstract
The invention discloses a heat value control system and a heat value control method of a glass melting furnace combustion system, wherein the system comprises an inert gas conveying unit, a gas fuel conveying unit and a high-heat-value gas conveying unit which are connected in parallel through pipelines; a mixed gas fuel main pipe regulating valve and a pressure transmitter are sequentially arranged on a mixed gas fuel main pipe line where the units are intersected, the downstream of the mixed gas fuel main pipe line is divided into a plurality of branch pipelines, and the branch pipelines are respectively connected with a burner in a small furnace combustion system; the downstream pipelines of the inert gas conveying unit, the gas fuel conveying unit and the high-calorific-value gas conveying unit and the upstream of the mixed gas fuel main pipeline are respectively connected with a chromatograph; also includes a calculation control unit. The invention solves the problem of accurate control of the combustion of the melting furnace, makes the combustion of the melting furnace easy to control, and achieves the purposes of reducing energy consumption, saving cost and improving product quality.
Description
Technical Field
The invention relates to the technical field of combustion systems of glass melting furnaces, in particular to a heat value control system and a heat value control method of a combustion system of a glass melting furnace.
Background
At present, a glass melting furnace mainly adopts gas fuel for heating, the combustion of the glass melting furnace is controlled by flow and pressure in the prior art, and as shown in figures 5-6, modules of the prior art comprise: the system comprises a main pipe regulating valve, a pressure transmitter, a branch pipe regulating valve, a branch pipe flowmeter and a control system; the system flow of the prior art is as follows: the gas fuel enters from the main pipe, passes through the main pipe flow meter and the main pipe regulating valve and then is sent to the combustion system of each pair of small furnaces, passes through the branch pipe flow meter and the branch pipe regulating valve and then is sent to the combustor in the combustion system of each pair of small furnaces, and the gas fuel is sent to the combustor according to a fixed flow value. However, the conventional control method cannot accurately control the production of the melting furnace under the condition of inconsistent fuel quality.
Disclosure of Invention
The invention aims to provide a heat value control system and a heat value control method of a glass melting furnace combustion system aiming at the defects in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a heat value control system of a glass melting furnace combustion system, which comprises an inert gas conveying unit, a gas fuel conveying unit and a high-heat-value gas conveying unit which are connected in parallel through pipelines; a mixed gas fuel main pipe regulating valve and a pressure transmitter are sequentially arranged on a mixed gas fuel main pipe line where the inert gas conveying unit, the gas fuel conveying unit and the high-calorific-value gas conveying unit are intersected, the downstream of the mixed gas fuel main pipe line is divided into a plurality of branch pipelines, and the branch pipelines are respectively connected with a burner in a small furnace combustion system;
the downstream pipelines of the inert gas conveying unit, the gas fuel conveying unit and the high-calorific-value gas conveying unit and the upstream of the mixed gas fuel main pipeline are respectively connected with a chromatograph;
the device also comprises a calculation control unit which is respectively connected with the inert gas conveying unit, the gas fuel conveying unit, the high-heat-value gas conveying unit, the mixed gas fuel main pipe regulating valve, the pressure transmitter and a plurality of small furnace combustion systems;
the computing control unit comprises a first control system and a second control system; the control system comprises a heat value generating unit, a mixed gas fuel mixing proportion generating unit, a kiln total heat generating unit, a mixed gas fuel total volume generating unit, a control unit, a gas fuel, high-heat-value gas and an inert gas flow generating unit; the control system comprises a mixed gas fuel optimal combustion pressure generating unit, a mixed gas fuel flow generating unit required by each pair of small furnaces and the control unit.
Further, an inert gas flowmeter and an inert gas regulating valve are sequentially arranged on an upstream pipeline of the inert gas conveying unit; a gas fuel flow meter and a gas fuel regulating valve are sequentially arranged on an upstream pipeline of the gas fuel conveying unit; and an upstream pipeline of the high-heating-value gas conveying unit is sequentially provided with a high-heating-value gas flowmeter and a high-heating-value gas regulating valve.
Further, the inert gas flow meter, the inert gas regulating valve, the gas fuel flow meter, the gas fuel regulating valve, the high-calorific-value gas flow meter and the high-calorific-value gas regulating valve are respectively and electrically connected with the calculation control unit.
Furthermore, each branch pipeline of the mixed gas fuel main pipeline connected with the combustor is sequentially connected with a branch gas flowmeter and a branch gas regulating valve.
Furthermore, the branch pipe gas flow meters and the branch pipe gas regulating valves are respectively electrically connected with the calculation control unit.
The second aspect of the invention provides a heat value control method of a glass melting furnace combustion system, which is based on the heat value control system and comprises the following steps:
the method comprises the following steps that firstly, the calorific value of all single component gases is prestored in a calorific value generation unit, and the calorific values of gas fuel, high calorific value gas, inert gas and mixed gas can be respectively calculated according to the result obtained by a chromatograph; calculating and determining the mixing proportion of the gas fuel, the high-calorific-value gas and the inert gas according to the prestored requirements of different glass products on the calorific value of the mixed gas fuel; determining the total heat required by the melting furnace according to the pre-stored requirements of different glass productivity under the structure of the melting furnace on energy consumption; the total volume generating unit of the mixed gas fuel calculates the total volume of the mixed gas fuel through the total heat required by the melting furnace and the heat value of the mixed gas fuel;
calculating and determining the flow requirements of the gas fuel, the high-heat-value gas and the inert gas according to the total volume of the mixed gas fuel required by the melting furnace and the mixing proportion of the gas fuel, the high-heat-value gas and the inert gas, and controlling the opening degrees of the inert gas regulating valve, the gas fuel regulating valve and the high-heat-value gas regulating valve;
step two, the optimal combustion pressure generating unit of the mixed gas fuel prestores the optimal combustion pressure of the mixed gas fuel under different components, and the optimal combustion pressure is determined according to the components of the mixed gas fuel obtained by a chromatograph; adjusting the opening of a mixed gas fuel main pipe adjusting valve according to the optimal combustion pressure and the actual value of the pressure transmitter;
determining the fuel flow of the mixed gas required by each pair of small furnaces according to the pre-stored combustion requirements of different glass products on each pair of small furnaces; and adjusting the opening of each pair of small furnace branch pipe adjusting valves according to the mixed gas fuel flow required by each pair of small furnaces and the actual value of each pair of small furnace branch pipe flow meters.
Furthermore, the mixed gas fuel mixing ratio generating unit prestores the requirements of different glass products on the calorific value of the mixed gas fuel, inputs the specification of the glass product through one key, and calculates the mixing ratio of the gas fuel, the high calorific value gas and the inert gas according to the calculated calorific values of the gas fuel, the high calorific value gas and the inert gas.
Furthermore, the total heat generation unit of the kiln prestores the requirements of different glass productivity on energy consumption under the structure of the kiln, and the total heat required by the melting kiln can be obtained by inputting the glass productivity through one key.
Further, the total heat required by each pair of small furnaces under different glass productivity of the kiln structure is prestored in the mixed gas fuel flow generating unit required by each pair of small furnaces, the total heat requirement of each pair of small furnaces can be correspondingly obtained by inputting the glass productivity through one key, and then the mixed gas fuel flow required by each pair of small furnaces is calculated according to the heat value of the mixed gas fuel.
By adopting the technical scheme, compared with the prior art, the invention has the following technical effects:
the invention solves the problem of accurate control of the combustion of the melting furnace, makes the combustion of the melting furnace easy to control, and achieves the purposes of reducing energy consumption, saving cost and improving product quality.
Drawings
FIG. 1 is a schematic diagram of a heating value control system of the present invention;
FIG. 2 is a schematic illustration of the steps of the heating value control method of the present invention;
FIG. 3 is a block diagram of a control system according to the present invention;
FIG. 4 is a block diagram of a second control system according to the present invention;
FIG. 5 is a schematic diagram of a prior art system;
fig. 6 is a schematic block diagram of a prior art process.
Detailed Description
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
Example 1
Referring to fig. 1 and 3-4, the present embodiment provides a calorific value control system of a combustion system of a glass melting furnace, including an inert gas delivery unit, a gaseous fuel delivery unit and a high calorific value gas delivery unit connected in parallel by pipes; a mixed gas fuel main pipe regulating valve and a pressure transmitter are sequentially arranged on a mixed gas fuel main pipe line where the inert gas conveying unit, the gas fuel conveying unit and the high-calorific-value gas conveying unit are intersected, the downstream of the mixed gas fuel main pipe line is divided into a plurality of branch pipelines, and the branch pipelines are respectively connected with a burner in a small furnace combustion system;
the downstream pipelines of the inert gas conveying unit, the gas fuel conveying unit and the high-calorific-value gas conveying unit and the upstream of the mixed gas fuel main pipeline are respectively connected with a chromatograph;
the device also comprises a calculation control unit which is respectively connected with the inert gas conveying unit, the gas fuel conveying unit, the high-heat-value gas conveying unit, the mixed gas fuel main pipe regulating valve, the pressure transmitter and a plurality of small furnace combustion systems;
the calculation control unit comprises a first control system and a second control system; the control system comprises a heat value generating unit, a mixed gas fuel mixing proportion generating unit, a kiln total heat generating unit, a mixed gas fuel total volume generating unit, a control unit, a gas fuel, high-heat-value gas and an inert gas flow generating unit; the control system comprises a mixed gas fuel optimal combustion pressure generating unit, a mixed gas fuel flow generating unit required by each pair of small furnaces and a control unit.
In the embodiment, an inert gas flowmeter and an inert gas regulating valve are sequentially arranged on an upstream pipeline of the inert gas conveying unit; the upstream pipeline of the gas fuel conveying unit is sequentially provided with a gas fuel flow meter and a gas fuel regulating valve; the upstream pipeline of the high-calorific-value gas conveying unit is sequentially provided with a high-calorific-value gas flowmeter and a high-calorific-value gas regulating valve;
the inert gas flowmeter, the inert gas regulating valve, the gas fuel flowmeter, the gas fuel regulating valve, the high-heat-value gas flowmeter and the high-heat-value gas regulating valve are respectively and electrically connected with the calculation control unit.
In the embodiment, each branch pipeline of the mixed gas fuel main pipeline connected with the burner is sequentially connected with a branch gas flowmeter and a branch gas regulating valve; the branch pipe gas flowmeters and the branch pipe gas regulating valves are respectively and electrically connected with the calculation control unit.
Example 2
Referring to fig. 2 to 4, the present example provides a method for controlling a calorific value of a combustion system of a glass melting furnace based on the calorific value control system of example 1, comprising the steps of:
the method comprises the following steps that firstly, the heat value generating unit prestores the heat values of all single component gases, and the heat values of gas fuel, high-heat-value gas, inert gas and mixed gas can be respectively calculated according to the results obtained by a chromatograph; the mixed gas fuel mixing proportion generating unit prestores the requirements of different glass products on the heat value of the mixed gas fuel, inputs the specification of the glass product by one key, and calculates the mixing proportion of the gas fuel, the high heat value gas and the inert gas according to the calculated heat values of the gas fuel, the high heat value gas and the inert gas; the total heat generation unit of the kiln prestores the requirements of different glass productivity on energy consumption under the structure of the kiln, and the total heat required by the melting kiln can be obtained by inputting the glass productivity through one key; the total volume generating unit of the mixed gas fuel calculates the total volume of the mixed gas fuel through the total heat required by the melting furnace and the heat value of the mixed gas fuel;
calculating and determining the flow requirements of the gas fuel, the high-heat-value gas and the inert gas according to the total volume of the mixed gas fuel required by the melting furnace and the mixing proportion of the gas fuel, the high-heat-value gas and the inert gas, and controlling the opening degrees of the inert gas regulating valve, the gas fuel regulating valve and the high-heat-value gas regulating valve;
step two, the optimal combustion pressure generating unit of the mixed gas fuel prestores the optimal combustion pressure of the mixed gas fuel under different components, and the optimal combustion pressure is determined according to the components of the mixed gas fuel obtained by a chromatograph; adjusting the opening of the mixed gas fuel main pipe adjusting valve according to the optimal combustion pressure and the actual value of the pressure transmitter;
step three, pre-storing the total heat required by each pair of small furnaces under different glass productivity of the kiln structure in a mixed gas fuel flow generating unit required by each pair of small furnaces, inputting the glass productivity by a key to correspondingly obtain the total heat requirement of each pair of small furnaces, and then calculating the mixed gas fuel flow required by each pair of small furnaces according to the heat value of the mixed gas fuel; and adjusting the opening of each pair of small furnace branch pipe adjusting valves according to the mixed gas fuel flow required by each pair of small furnaces and the actual value of each pair of small furnace branch pipe flow meters.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. A heat value control system of a glass melting furnace combustion system is characterized by comprising an inert gas conveying unit, a gas fuel conveying unit and a high-heat-value gas conveying unit which are connected in parallel through pipelines; a mixed gas fuel main pipe regulating valve and a pressure transmitter are sequentially arranged on a mixed gas fuel main pipe line where the inert gas conveying unit, the gas fuel conveying unit and the high-calorific-value gas conveying unit are intersected, the downstream of the mixed gas fuel main pipe line is divided into a plurality of branch pipelines, and the branch pipelines are respectively connected with a burner in a small furnace combustion system;
the downstream pipelines of the inert gas conveying unit, the gas fuel conveying unit and the high-calorific-value gas conveying unit and the upstream of the mixed gas fuel main pipeline are respectively connected with a chromatograph;
the device also comprises a calculation control unit which is respectively connected with the inert gas conveying unit, the gas fuel conveying unit, the high-heat-value gas conveying unit, the mixed gas fuel main pipe regulating valve, the pressure transmitter and a plurality of small furnace combustion systems;
the computing control unit comprises a first control system and a second control system; the control system comprises a heat value generating unit, a mixed gas fuel mixing proportion generating unit, a kiln total heat generating unit, a mixed gas fuel total volume generating unit, a control unit, a gas fuel, high-heat-value gas and an inert gas flow generating unit; the control system comprises a mixed gas fuel optimal combustion pressure generating unit, a mixed gas fuel flow generating unit required by each pair of small furnaces and the control unit.
2. The heating value control system according to claim 1, wherein an inert gas flow meter and an inert gas regulating valve are provided in this order on an upstream pipeline of the inert gas delivery unit; a gas fuel flow meter and a gas fuel regulating valve are sequentially arranged on an upstream pipeline of the gas fuel conveying unit; and an upstream pipeline of the high-heating-value gas conveying unit is sequentially provided with a high-heating-value gas flowmeter and a high-heating-value gas regulating valve.
3. A heating value control system as claimed in claim 2, wherein the inert gas flow meter, the inert gas regulating valve, the gas fuel flow meter, the gas fuel regulating valve, the high heating value gas flow meter, and the high heating value gas regulating valve are electrically connected to the calculation control unit, respectively.
4. A heating value control system as claimed in claim 1, wherein a branch gas flow meter and a branch gas regulating valve are connected in sequence to each of the branch lines of the mixed gas fuel main line connected to the burner.
5. A heating value control system as claimed in claim 4, wherein a plurality of the branch gas flow meters and the branch gas regulating valves are electrically connected to the calculation control unit, respectively.
6. A method for controlling a calorific value of a combustion system of a glass melting furnace based on the calorific value control system according to any one of claims 1 to 5, comprising the steps of:
the method comprises the following steps that firstly, the calorific value of all single component gases is prestored in a calorific value generation unit, and the calorific values of gas fuel, high calorific value gas, inert gas and mixed gas can be respectively calculated according to the result obtained by a chromatograph; calculating and determining the mixing proportion of the gas fuel, the high-calorific-value gas and the inert gas according to the prestored requirements of different glass products on the calorific value of the mixed gas fuel; determining the total heat required by the melting furnace according to the pre-stored requirements of different glass productivity under the structure of the melting furnace on energy consumption; the total volume generating unit of the mixed gas fuel calculates the total volume of the mixed gas fuel through the total heat required by the melting furnace and the heat value of the mixed gas fuel;
calculating and determining the flow requirements of the gas fuel, the high-heat-value gas and the inert gas according to the total volume of the mixed gas fuel required by the melting furnace and the mixing proportion of the gas fuel, the high-heat-value gas and the inert gas, and controlling the opening degrees of the inert gas regulating valve, the gas fuel regulating valve and the high-heat-value gas regulating valve;
step two, the optimal combustion pressure generating unit of the mixed gas fuel prestores the optimal combustion pressure of the mixed gas fuel under different components, and the optimal combustion pressure is determined according to the components of the mixed gas fuel obtained by a chromatograph; adjusting the opening of a mixed gas fuel main pipe adjusting valve according to the optimal combustion pressure and the actual value of the pressure transmitter;
determining the fuel flow of the mixed gas required by each pair of small furnaces according to the pre-stored combustion requirements of different glass products on each pair of small furnaces; and adjusting the opening of each pair of small furnace branch pipe adjusting valves according to the mixed gas fuel flow required by each pair of small furnaces and the actual value of each pair of small furnace branch pipe flow meters.
7. A calorific value control method according to claim 6, wherein the mixed gas fuel mixture ratio generating unit prestores requirements of different glass products for the calorific value of the mixed gas fuel, and the specifications of the glass products are inputted by one key, and the mixture ratio of the gas fuel, the high calorific value gas and the inert gas is calculated from the calculated calorific values of the gas fuel, the high calorific value gas and the inert gas.
8. A calorific value control method according to claim 6 wherein the total heat generation unit of the kiln pre-stores the energy consumption requirements for different glass capacities of the kiln structure, and the total heat required by the melting furnace can be obtained by inputting the glass capacity by one key.
9. The method for controlling the calorific value of claim 6, wherein the total heat required by each pair of small furnaces under different glass productivity of the kiln structure is prestored in the mixed gas fuel flow generating unit, the total heat requirement of each pair of small furnaces can be correspondingly obtained by inputting the glass productivity through one key, and then the mixed gas fuel flow required by each pair of small furnaces is calculated according to the calorific value of the mixed gas fuel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110741665.8A CN113511799A (en) | 2021-06-30 | 2021-06-30 | Heat value control system and heat value control method of glass melting furnace combustion system |
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| CN202110741665.8A CN113511799A (en) | 2021-06-30 | 2021-06-30 | Heat value control system and heat value control method of glass melting furnace combustion system |
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