Method, device, equipment and medium for automatically controlling sulfur content in mixed coal gas

Abstract

The application discloses a kind of automatic control method, device, equipment and medium of sulfur content in mixed gas.The method comprises: using multiple configuration gas, according to the preset proportioning quantity, mixed configuration is obtained mixed gas;At least one configuration gas real-time parameter of each configuration gas is collected, and according to configuration gas real-time parameter, the sulfur content in mixed gas is estimated;If it is determined that sulfur content does not satisfy low sulfur content emission condition, then according to at least one configuration gas real-time parameter of each configuration gas, the sulfur dioxide contribution degree of each configuration gas to the mixed gas is calculated;According to each sulfur dioxide contribution degree, the proportioning quantity of each configuration gas when generating mixed gas is determined again, to obtain the mixed gas that satisfies low sulfur content emission condition.By the technical scheme of the application, the sulfur content in mixed gas can be automatically adjusted and controlled, and the control of sulfur dioxide content in flue gas generated by mixed gas combustion is realized, and the accuracy of sulfur content control in mixed gas is improved.

Description

Technical Field

[0001] This invention relates to the field of sulfur content control, and more particularly to an automatic control method, apparatus, equipment and medium for sulfur content in mixed coal gas. Background Technology

[0002] Existing mixed gas systems in metallurgical enterprises are mainly composed of blast furnace gas, coke oven gas, and converter gas. Among them, coke oven gas has the highest sulfur content, followed by blast furnace gas, and converter gas has the lowest. With the implementation of ultra-low emission standards for flue gas from steel rolling mills and the promotion and application of source gas desulfurization technology, mixed gas furnaces in metallurgical enterprises have begun to implement source gas desulfurization to centrally control the sulfur content in sulfur-containing emissions from mixed gas heating furnaces in steel rolling systems.

[0003] Existing technologies for flue gas desulfurization in mixed gas furnaces employ source control, namely gas desulfurization. Mixed gas desulfurization mainly refers to desulfurizing blast furnace gas and coke oven gas, and then mixing them with converter gas at a certain flow ratio to produce mixed gas with low sulfur content.

[0004] The existing technology has the following problems: Since the sulfur content in coal gas fluctuates, it is necessary to monitor the total sulfur content in the mixed coal gas. However, due to the changes in the proportion of its blending gases, the flue gas coefficient of the mixed coal gas is prone to change. Therefore, it is difficult to adjust the sulfur content in the sulfur-containing emissions in the flue gas based on the total sulfur content in the mixed coal gas. As a result, it is impossible to achieve the goal of controlling the sulfur content in the flue gas produced by the combustion of the mixed coal gas through automatic control of the sulfur content in the mixed coal gas. Summary of the Invention

[0005] This invention provides an automatic control method, apparatus, equipment, and medium for the sulfur content in mixed coal gas, which can solve the problem in the prior art that the sulfur content in the flue gas produced by the combustion of mixed coal gas cannot be controlled by automatically controlling the sulfur content in the mixed coal gas.

[0006] Firstly, an automatic control method for the sulfur content in mixed coal gas is provided, the method comprising:

[0007] Multiple types of gas are mixed according to a preset ratio to obtain mixed gas; wherein, the ratio is the hourly flow rate of each gas into the mixed gas furnace.

[0008] Collect at least one real-time parameter of each of the configured gases, and estimate the sulfur content in the mixed gas based on the real-time parameters of the configured gases; wherein, the sulfur content in the mixed gas is the sulfur dioxide content in the flue gas produced after the mixed gas is burned;

[0009] If it is determined that the sulfur content does not meet the low sulfur emission conditions, then the contribution of each of the configured gases to the sulfur dioxide of the mixed gas is calculated based on the real-time parameters of at least one of the configured gases.

[0010] Based on the contribution of each sulfur dioxide, the proportion of each gas in the mixed gas is re-determined to obtain mixed gas that meets the low sulfur emission requirements.

[0011] Secondly, the present invention provides an automatic control device for the sulfur content in mixed coal gas, the device comprising:

[0012] A mixed gas generation module is used to mix various types of gas according to a preset ratio to obtain mixed gas; wherein, the ratio is the hourly flow rate of each type of gas fed into the mixed gas furnace.

[0013] The mixed gas sulfur content calculation module is used to collect real-time parameters of at least one of the configured gases and estimate the sulfur content in the mixed gas based on the real-time parameters of the configured gases; wherein, the sulfur content in the mixed gas is the sulfur dioxide content in the flue gas produced after the mixed gas is burned;

[0014] The sulfur dioxide contribution calculation module is used to calculate the sulfur dioxide contribution of each of the configured gases to the mixed gas based on at least one of the real-time parameters of each configured gas if it is determined that the sulfur content does not meet the low sulfur emission conditions.

[0015] The proportioning reset module is used to redetermine the proportion of each gas in the production of mixed gas based on the contribution of each sulfur dioxide, so as to obtain mixed gas that meets the conditions for low sulfur emission.

[0016] Thirdly, the present invention provides an electronic device, the electronic device comprising:

[0017] At least one processor; and

[0018] A memory communicatively connected to the at least one processor; wherein,

[0019] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the automatic control method for sulfur content in mixed gas according to any embodiment of the present invention.

[0020] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the automatic control method for sulfur content in mixed gas according to any embodiment of the present invention.

[0021] The technical solution of this invention controls the amount of each compound gas in the mixed coal gas by predicting the sulfur dioxide content in the flue gas after combustion, thereby controlling the sulfur content in the mixed coal gas. Specifically, it includes: using multiple compound gases to mix and configure the mixed coal gas according to a preset ratio; then collecting real-time parameters of at least one compound gas; estimating the sulfur content in the mixed coal gas based on the real-time parameters; if it is determined that the sulfur content does not meet the low sulfur emission conditions, calculating the contribution of each compound gas to the sulfur dioxide in the mixed coal gas based on the real-time parameters of at least one compound gas; and finally, re-determining the ratio of each compound gas when generating the mixed coal gas based on the sulfur dioxide contribution, so as to obtain mixed coal gas that meets the low sulfur emission conditions. This solves the problem that the prior art cannot control the sulfur content in the flue gas generated by the combustion of mixed coal gas by automatically controlling the sulfur content in the mixed coal gas, realizing the automatic adjustment and control of the sulfur content in the mixed coal gas, thereby achieving the control of the sulfur content in the flue gas generated by the combustion of mixed coal gas and improving the accuracy of sulfur content control in the mixed coal gas.

[0022] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a flowchart of an automatic control method for sulfur content in mixed coal gas according to Embodiment 1 of the present invention;

[0025] Figure 2 This is a flowchart of an automatic control method for sulfur content in mixed coal gas according to Embodiment 2 of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of an automatic control device for sulfur content in mixed gas according to Embodiment 3 of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of an electronic device for implementing the automatic control method for sulfur content in mixed coal gas according to an embodiment of the present invention. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] Example 1

[0031] Figure 1 This is a flowchart of an automatic control method for sulfur content in mixed coal gas provided in Embodiment 1 of the present invention. This embodiment is applicable to the automatic control of sulfur content in mixed coal gas. The method can be executed by an automatic control device for sulfur content in mixed coal gas. The automatic control device for sulfur content in mixed coal gas can be implemented in hardware and / or software. The automatic control device for sulfur content in mixed coal gas can be configured in a terminal or server with automatic control function for sulfur content in mixed coal gas.

[0032] like Figure 1 As shown, the method includes:

[0033] S110. Using multiple types of gas, mixed gas is prepared by mixing them according to a preset ratio to obtain mixed gas.

[0034] The specified proportion refers to the hourly flow rate of each gas being fed into the mixed gas furnace.

[0035] The configured gas includes at least one of blast furnace gas, coke oven gas, and converter gas; furthermore, among the configured gases, the coke oven gas has the highest sulfur content, and the converter gas has the lowest sulfur content.

[0036] In this embodiment, for example, if the ratio of the mixed gas is 3:3:1, that is, the 7 cubic meters / hour flow rate of the mixed gas fed into the mixed gas furnace includes 3 cubic meters / hour of blast furnace gas, 3 cubic meters / hour of coke oven gas and 1 cubic meter / hour of converter gas.

[0037] S120. Collect at least one real-time parameter of each of the configured gases, and estimate the sulfur content in the mixed gas based on the real-time parameters of the configured gases.

[0038] The sulfur content in the mixed gas is the sulfur dioxide content in the flue gas produced after the mixed gas is burned.

[0039] The real-time parameters of the configured gases include: pressure, temperature, flow rate, total sulfur content, component ratio, and calorific value parameters for each configured gas. Furthermore, the pressure parameter can be used to determine the current pressure of each configured gas, the temperature parameter can be used to determine the combustion temperature of each configured gas, the flow rate parameter can be used to determine the current hourly flow rate of each configured gas, the total sulfur content parameter can be used to determine the sulfur content per unit volume of each configured gas, the component ratio can be used to determine the specific composition of each configured gas, and the calorific value parameter can be used to determine the amount of heat provided by combustion per unit volume of each configured gas. For example, the component ratio of the blast furnace gas can be: 6-12% carbon dioxide, 28-33% carbon monoxide, 1-4% hydrogen, 55-60% nitrogen, 0.2-0.5% hydrocarbons, and a small amount of sulfur dioxide, etc.

[0040] In this embodiment, at least one real-time parameter of each of the configured gases is collected, and the sulfur content in the mixed gas is estimated based on the real-time parameters of the configured gases. This includes: real-time collection of the component ratio of different gas components in each configured gas, the measured value of the total sulfur content, and the hourly flow rate; calculating the amount of flue gas produced per unit cubic meter of gas combustion for each configured gas based on the component ratio; and estimating the sulfur content in the mixed gas based on the measured value of the total sulfur content of each configured gas, the hourly flow rate, and the amount of flue gas produced per unit cubic meter of gas combustion.

[0041] Furthermore, based on the proportion of each component, the amount of flue gas produced by combustion per cubic meter of gas in each configuration is calculated, including:

[0042] Based on the proportions of each component, the amount of flue gas produced by the combustion of each of the configured gases per cubic meter is calculated using a preset formula; wherein the preset formula is:

[0043] n i =3.12(wH2+w CO +11.46w CH4 +19.8wCnHm +w1+w2+...+w k ;

[0044] Where, n i w represents the amount of flue gas produced by the combustion of a unit cubic meter of gas in the i-th configuration. H2 w represents the volume percentage of H2 in the i-th configuration. CO Let wC be the volume percentage of CO in the i-th configuration. H4 w represents the volume percentage of CH4 in the i-th configuration. CnHm Let w be the volume percentage of CnHm in the i-th configuration. k Let be the volume percentage of the k-th gas in the i-th configuration.

[0045] For example, if the current composition of the blast furnace gas is: 12% carbon dioxide, 28% carbon monoxide, 4% hydrogen, 55% nitrogen, 0.1% methane, and 9% other hydrocarbons, then the amount of flue gas produced per unit cubic volume of the current blast furnace gas combustion is:

[0046] n1=3.12(4%+28%)+11.46*0.1%+19.8*9%+12%+55%.

[0047] Furthermore, based on the measured total sulfur content of each of the configured gases, the hourly flow rate, and the amount of flue gas produced by the combustion of each unit cubic meter of gas, the sulfur content in the mixed gas is estimated, including:

[0048] Based on the measured total sulfur content of each of the configured gases, the hourly flow rate, and the amount of flue gas produced by combustion per unit cubic meter of gas, the sulfur content of the mixed gas is calculated according to a preset formula; wherein, the preset formula is:

[0049] (SO2) (初始) =2(S1×V1+S2×V2+S3×V3) / (n1×V1+n2×V2+n3×V3);

[0050] Among them, (SO2) (初始) Let n be the sulfur content of the mixed gas, Si be the measured total sulfur content of the i-th configuration gas, Vi be the hourly flow rate of the i-th configuration gas, and n be the total sulfur content of the mixed gas. i Let be the amount of flue gas produced by the combustion of a unit cubic meter of gas in the i-th configuration.

[0051] S130. If it is determined that the sulfur content does not meet the low sulfur emission conditions, then the contribution of each of the configured gases to the sulfur dioxide of the mixed gas is calculated based on the real-time parameters of at least one of the configured gases.

[0052] The low sulfur emission conditions can be set manually; for example, the low sulfur emission conditions can be (SO2). (低硫量) =90%.

[0053] Specifically, based on at least one real-time parameter of each of the configured gases, the contribution of each configured gas to the sulfur dioxide concentration of the mixed gas is calculated, including: based on at least one real-time parameter of each of the configured gases, the contribution of each configured gas to the sulfur dioxide concentration of the mixed gas is calculated using a preset formula; wherein, the preset formula is: Mi = 2Si / n i ;

[0054] Where Mi represents the contribution of the i-th configuration gas to the sulfur dioxide content of the mixed gas, Si represents the measured total sulfur content of the i-th configuration gas, and n i Let be the amount of flue gas produced by the combustion of a unit cubic meter of gas with the i-th configuration gas; wherein, the sulfur dioxide contribution of the mixed gas can be: the contribution of each configuration gas to the sulfur dioxide content in the flue gas produced by the combustion of the mixed gas; that is, the greater the sulfur dioxide contribution, the greater the influence of the flue gas produced by the configuration gas on the sulfur dioxide content in the flue gas produced by the mixed gas.

[0055] In this embodiment, if it is determined that the sulfur content does not meet the low sulfur emission conditions, the method further includes: transmitting the calculation result of the current sulfur content to the display device for display, and issuing a high sulfur content alarm to remind relevant personnel to pay attention.

[0056] Accordingly, if it is determined that the sulfur content meets the low sulfur emission conditions, then according to the new proportion, a mixed gas that meets the low sulfur emission conditions is generated, and the currently calculated sulfur content result is transmitted to the display device for display.

[0057] S140. Based on the contribution of each sulfur dioxide, redetermine the proportion of each gas in the mixed gas when generating the mixed gas, so as to obtain mixed gas that meets the conditions for low sulfur emission.

[0058] Specifically, if the sulfur content of the current mixed gas is high, while ensuring the calorific value and pressure of the mixed gas, it is necessary to reduce the proportion of the gas with the highest sulfur dioxide contribution to obtain a new mixed gas with reduced sulfur content.

[0059] The technical solution of this invention involves using multiple configuration gases and mixing them according to a preset ratio to obtain mixed coal gas. Then, real-time parameters of at least one configuration gas are collected, and the sulfur content in the mixed coal gas is estimated based on these parameters. If the sulfur content does not meet the low-sulfur emission conditions, the contribution of each configuration gas to sulfur dioxide in the mixed coal gas is calculated based on the real-time parameters of at least one configuration gas. Finally, based on the sulfur dioxide contribution, the ratio of each configuration gas in the mixed coal gas production is re-determined to obtain mixed coal gas that meets the low-sulfur emission conditions. This achieves automatic adjustment and control of the sulfur content in the mixed coal gas, thereby controlling the sulfur content in the flue gas generated from the combustion of the mixed coal gas and improving the accuracy of sulfur content control in the mixed coal gas.

[0060] Example 2

[0061] Figure 2 This is a flowchart of an automatic control method for sulfur content in mixed coal gas provided in Embodiment 2 of the present invention. This embodiment is a refinement based on the above embodiment. Specifically, this embodiment refines the method of redetermining the proportion of each configured gas in the generation of mixed coal gas according to the contribution of each sulfur dioxide, so as to obtain mixed coal gas that meets the conditions for low sulfur emission.

[0062] like Figure 2 As shown, the method includes:

[0063] S210. Using multiple types of gas, a mixed gas is prepared by mixing them according to a preset ratio; wherein, the ratio is the hourly flow rate of each gas in the mixed gas furnace.

[0064] S220. Collect at least one real-time parameter of each of the configured gases, and estimate the sulfur content in the mixed gas based on the real-time parameters of the configured gases.

[0065] S230. If it is determined that the sulfur content does not meet the low sulfur emission conditions, then the contribution of each of the configured gases to the sulfur dioxide of the mixed gas is calculated based on the real-time parameters of at least one of the configured gases.

[0066] S240. Among all the configuration gases, obtain the target configuration gas with the highest sulfur dioxide contribution, the first associated configuration gas with a medium sulfur dioxide contribution, and the second associated configuration gas with the lowest sulfur dioxide contribution.

[0067] For example, if the sulfur dioxide contribution of coke oven gas in the current mixed gas is calculated to be 50%, the sulfur dioxide contribution of blast furnace gas is 30%, and the sulfur dioxide contribution of converter gas is 20%, then the coke oven gas is selected as the target configuration gas, the blast furnace gas as the first associated configuration gas, and the converter gas as the second associated configuration gas.

[0068] S250. The threshold flow rate of the target configuration gas is calculated by a preset formula, and the proportion of the target configuration gas is adjusted according to the threshold flow rate to obtain a new proportion.

[0069] Wherein, the threshold flow rate of the target configuration gas is the maximum value of V1 calculated by a preset formula;

[0070] The preset formula is as follows:

[0071] (SO2) (阈值) =2(S1×V1+S2×V2+S3×V3) / (n1×V1+n2×V2+n3×V3);

[0072] Among them, (SO2) (阈值) Let Si be the preset threshold for the sulfur content of the mixed gas, Si be the measured total sulfur content of the i-th configuration gas, Vi be the hourly flow rate of the i-th configuration gas, and n be the value of n. i The amount of flue gas produced by the combustion of a unit cubic meter of gas in the i-th configuration; further, the (SO2) (阈值) It can be 85%; in this embodiment, by using (SO2) (阈值) Set to a fixed value, calculate the combination of multiple V1V2V3 flow solutions that satisfy the preset threshold for each configuration gas, select the solution with the largest V1 value as the threshold flow rate of the target configuration gas, and use the flow rates of the first associated configuration gas and the second associated configuration gas corresponding to this solution as the new proportions to readjust the current mixed gas.

[0073] S260. Determine whether the gas to be mixed meets the preset mixing standard based on the new proportion.

[0074] When the gas to be mixed meets the preset mixing standard, execute S270;

[0075] If the gas to be mixed does not meet the preset mixing standard, execute S280.

[0076] The preset mixing standard is: whether the gas to be mixed, obtained based on the new proportion, meets the preset calorific value and pressure requirements; wherein the calorific value and pressure requirements are the mixing requirements standards for the overall mixed gas.

[0077] Furthermore, the calorific value requirement can be: the calorific value of the mixed gas to be generated must meet the requirements of a preset formula; wherein, the preset formula is: Q 混 = (V1×Q1+V2×Q1rV3×Q3) / V 混 , wherein, the Q 混Qi represents the calorific value of the mixed gas, and Qi represents the calorific value parameter corresponding to each gas configuration.

[0078] The gas pressure requirement can be: the gas pressure of the gas to be mixed needs to meet a preset fluctuation range, i.e., P 混 =P 设 ±ΔkPa; where P 混 P is the gas pressure of the mixed coal gas. 设 The system presets the air pressure threshold, and Δk is the allowable fluctuation range of air pressure, which can be manually preset and adjusted.

[0079] S270. According to the new proportions, generate mixed coal gas that meets the low sulfur emission requirements.

[0080] The low-sulfur emission condition of the mixed gas can be: the sulfur dioxide content in the flue gas produced after the combustion of the mixed gas meets a preset threshold condition.

[0081] Furthermore, if it is determined that the sulfur content meets the low sulfur emission conditions, then according to the new proportion, a mixed gas that meets the low sulfur emission conditions is generated, and the currently calculated sulfur content result is transmitted to the display device for display.

[0082] S280. Obtain the calorific values ​​of the first associated configuration gas and the second associated configuration gas respectively, and execute S290.

[0083] S290. Based on the calorific value of the first associated configuration gas and the second associated configuration gas and the threshold flow rate of the target configuration gas, the current ratio of the first associated configuration gas and the second associated configuration gas is adjusted according to a preset rule until the preset mixing standard of the gas to be mixed is met.

[0084] The preset rule is as follows: The flow rate of the gas with the higher calorific value among the associated gas configurations is selected to adjust the calorific value of the mixed gas; the flow rate of the gas with the lower calorific value among the associated gas configurations is selected to adjust the gas pressure of the mixed gas. For example, if the calorific value of the first associated gas configuration is greater than the calorific value of the second associated gas configuration, and the current Q of the gas to be mixed... 混 P is less than the preset calorific value requirement. 混 If the pressure exceeds the preset threshold requirement, the calorific value of the gas to be mixed is increased by increasing the hourly flow rate of the first associated configuration gas, and the gas pressure of the gas to be mixed is reduced by decreasing the hourly flow rate of the second associated configuration gas, until the preset mixing standard of the gas to be mixed is met.

[0085] In this embodiment, optionally, adjusting the current ratio of the first associated configuration gas and the second associated configuration gas according to preset rules until the preset mixing standard of the gas to be mixed is met further includes:

[0086] If the number of times the current ratio of the first associated gas and the second associated gas is adjusted reaches the threshold number, the adjustment will stop. At the same time, the calculated sulfur content of the current mixed gas will be presented to the display device for display, and an over-high value alarm will be generated to remind the staff to intervene manually.

[0087] In actual production and daily life, situations may arise where the proportions of the components of each gas configuration cannot meet the currently set sulfur content threshold. In such cases, a threshold number of automatic adjustment times can be set. For example, the threshold number can be set to 3 times. When the current ratio of the first associated gas and the second associated gas configuration in the above operation is adjusted three times, the system determines that the current proportions of the components of each gas configuration cannot meet the currently preset sulfur content requirement of the mixed gas. Therefore, the adjustment is stopped, and the current sulfur content calculation result of the mixed gas is presented to the display device for display. At the same time, an over-high value alarm is generated to remind the staff to manually adjust each gas configuration.

[0088] The technical solution of this invention involves mixing various gases according to a preset ratio to obtain a mixed coal gas. Then, real-time parameters of at least one of the mixed gases are collected, and the sulfur content in the mixed coal gas is estimated based on these parameters. If the sulfur content does not meet the low-sulfur emission conditions, the contribution of each mixed gas to sulfur dioxide emissions is calculated based on the real-time parameters of at least one of the mixed gases. Then, among all the mixed gases, the target mixed gas with the highest sulfur dioxide contribution, the first associated mixed gas with a medium sulfur dioxide contribution, and the second associated mixed gas with the lowest sulfur dioxide contribution are identified. The threshold flow rate of the target mixed gas is then calculated using a preset formula, and the ratio of the target mixed gas is adjusted according to the threshold flow rate to obtain a new ratio. It then determines whether the gas to be mixed meets the preset mixing standard based on the new ratio. When the gas meets the preset mixing standard, it generates mixed gas that meets the low sulfur emission conditions according to the new ratio. When the gas does not meet the preset mixing standard, it obtains the calorific value of the first associated configuration gas and the second associated configuration gas respectively. Based on the calorific value of the first associated configuration gas and the second associated configuration gas and the threshold flow rate of the target configuration gas, it adjusts the current ratio of the first associated configuration gas and the second associated configuration gas according to the preset rules until the preset mixing standard of the gas to be mixed is met. This realizes the automatic adjustment and control of the sulfur content in the mixed gas, thereby realizing the control of the sulfur content in the flue gas generated by the combustion of the mixed gas and improving the accuracy of sulfur content control in the mixed gas.

[0089] Example 3

[0090] Figure 3This is a schematic diagram of an automatic control device for the sulfur content in mixed coal gas provided in Embodiment 3 of the present invention. Figure 3 As shown, the device includes:

[0091] The mixed gas generation module 310 is used to mix various types of gas according to a preset ratio to obtain mixed gas; wherein, the ratio is the hourly flow rate of each type of gas fed into the mixed gas furnace.

[0092] The mixed gas sulfur content calculation module 320 is used to collect real-time parameters of at least one of the configured gases and estimate the sulfur content in the mixed gas based on the real-time parameters of the configured gases.

[0093] The sulfur dioxide contribution calculation module 330 is used to calculate the sulfur dioxide contribution of each of the configured gases to the mixed gas based on at least one of the real-time parameters of each of the configured gases if it is determined that the sulfur content does not meet the low sulfur emission conditions.

[0094] The proportioning reset module 340 is used to redetermine the proportion of each gas in the generation of mixed gas according to the contribution of each sulfur dioxide, so as to obtain mixed gas that meets the low sulfur emission conditions.

[0095] The technical solution of this invention involves using multiple configuration gases and mixing them according to a preset ratio to obtain mixed coal gas. Then, real-time parameters of at least one configuration gas are collected, and the sulfur content in the mixed coal gas is estimated based on these parameters. If the sulfur content does not meet the low-sulfur emission conditions, the contribution of each configuration gas to sulfur dioxide in the mixed coal gas is calculated based on the real-time parameters of at least one configuration gas. Finally, based on the sulfur dioxide contribution, the ratio of each configuration gas in the mixed coal gas production is re-determined to obtain mixed coal gas that meets the low-sulfur emission conditions. This achieves automatic adjustment and control of the sulfur content in the mixed coal gas, thereby controlling the sulfur content in the flue gas generated from the combustion of the mixed coal gas and improving the accuracy of sulfur content control in the mixed coal gas.

[0096] Based on the above embodiments, the mixed gas sulfur content calculation module 320 further includes:

[0097] The real-time acquisition unit is used to collect the component ratio of different gas components in each configuration gas, the measured value of total sulfur content, and the hourly flow rate in real time.

[0098] The flue gas volume calculation unit is used to calculate the flue gas volume generated by the combustion of each of the configured gas units per cubic meter of gas based on the proportion of each component.

[0099] The sulfur content estimation unit is used to estimate the sulfur content in the mixed gas based on the measured total sulfur content of each of the configured gases, the hourly flow rate, and the amount of flue gas produced by the combustion of each unit cubic meter of gas.

[0100] Based on the above embodiments, the flue gas volume calculation unit further includes:

[0101] A unit for calculating the amount of flue gas produced by the combustion of each of the configured gases per cubic meter, based on a preset formula according to the proportion of each component; wherein the preset formula is:

[0102] n i =3.12(w H2 +w CO +11.46w CH4 +19.8w CnHm +w1+w2+...+w k ;

[0103] Based on the above embodiments, the sulfur content prediction unit further includes:

[0104] The sulfur content calculation unit is used to calculate the sulfur content of the mixed gas based on the measured total sulfur content of each of the configured gases, the hourly flow rate, and the amount of flue gas produced by the combustion of each unit cubic meter of gas, according to a preset formula; wherein the preset formula is:

[0105] (SO2) (初始) =2(S1×V1+S2×V2+S3×V3) / (n1×V1+n2×V2+n3×V3);

[0106] Among them, (SO2) (初始) Let n be the sulfur content of the mixed gas, Si be the measured total sulfur content of the i-th configuration gas, Vi be the hourly flow rate of the i-th configuration gas, and n be the total sulfur content of the mixed gas. i Let be the amount of flue gas produced by the combustion of a unit cubic meter of gas in the i-th configuration.

[0107] Based on the above embodiments, the sulfur dioxide contribution calculation module 330 is further configured to: calculate the sulfur dioxide contribution of each of the configured gases to the mixed coal gas based on a preset formula, according to at least one real-time parameter of each of the configured gases; wherein the preset formula is: Mi=2Si / n i ;

[0108] Based on the above embodiments, the proportioning reset module 340 further includes:

[0109] The target configuration gas acquisition unit is used to acquire, from all configuration gases, the target configuration gas with the highest sulfur dioxide contribution, the first associated configuration gas with a medium sulfur dioxide contribution, and the second associated configuration gas with the lowest sulfur dioxide contribution.

[0110] A threshold flow calculation unit is used to calculate the threshold flow rate of the target configuration gas using a preset formula; wherein the threshold flow rate of the target configuration gas is the maximum value of V1 calculated using the preset formula.

[0111] The first proportion adjustment unit is used to adjust the proportion of the target configuration gas according to the threshold flow rate to obtain a new proportion.

[0112] The new proportion determination unit is used to determine whether the gas to be mixed meets the preset mixing standard based on the new proportion.

[0113] A low-sulfur mixed gas generation unit is used to generate mixed gas that meets low-sulfur emission conditions according to the new proportion when the gas to be mixed meets the preset mixing standard.

[0114] The calorific value acquisition unit is used to acquire the calorific values ​​of the first associated configuration gas and the second associated configuration gas respectively when the gas to be mixed does not meet the preset mixing standard.

[0115] The second proportion adjustment unit is used to adjust the current proportion of the first associated gas and the second associated gas according to preset rules based on the calorific value of the first associated gas and the second associated gas and the threshold flow rate of the target gas, until the preset mixing standard of the gas to be mixed is met.

[0116] Based on the above embodiments, the automatic control device for sulfur content in the mixed gas further includes: a repetitive adjustment module, used to adjust the current ratio of the first associated configuration gas and the second associated configuration gas according to preset rules until the preset mixing standard of the gas to be mixed is met, and then determine whether the sulfur content in the mixed gas exceeds a threshold based on the current ratio; if it does not exceed the threshold, then generate mixed gas that meets the low sulfur emission conditions according to the new ratio; if it exceeds the threshold, then return to perform the operation of adjusting the current ratio of the first associated configuration gas and the second associated configuration gas based on preset rules until the termination condition is met.

[0117] The automatic control device for sulfur content in mixed gas provided in this embodiment of the invention can execute the automatic control method for sulfur content in mixed gas provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0118] Example 4

[0119] Figure 4 A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0120] like Figure 4 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0121] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0122] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the automatic control method for the sulfur content in mixed gas.

[0123] Accordingly, the method includes:

[0124] Mixed gas is obtained by mixing various types of gas according to a preset ratio; wherein, the ratio is the hourly flow rate of each type of gas fed into the mixed gas furnace.

[0125] Collect real-time parameters of at least one of the configured gases, and estimate the sulfur content in the mixed gas based on the real-time parameters of the configured gases;

[0126] If it is determined that the sulfur content does not meet the low sulfur emission conditions, then the contribution of each of the configured gases to the sulfur dioxide of the mixed gas is calculated based on the real-time parameters of at least one of the configured gases.

[0127] Based on the contribution of each sulfur dioxide, the proportion of each gas in the mixed gas is re-determined to obtain mixed gas that meets the low sulfur emission requirements.

[0128] In some embodiments, the automatic control method for the sulfur content in the mixed gas can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the automatic control method for the sulfur content in the mixed gas described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the automatic control method for the sulfur content in the mixed gas by any other suitable means (e.g., by means of firmware).

[0129] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0130] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0131] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0132] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0133] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0134] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0135] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

Claims

1. An automatic control method for the sulfur content in mixed coal gas, characterized in that, include: Multiple types of gas are mixed according to a preset ratio to obtain mixed gas; wherein, the ratio is the hourly flow rate of each gas into the mixed gas furnace. Collect at least one real-time parameter of each of the configured gases, and estimate the sulfur content in the mixed gas based on the real-time parameters of the configured gases; wherein, the sulfur content in the mixed gas is the sulfur dioxide content in the flue gas produced after the mixed gas is burned; If it is determined that the sulfur content does not meet the low sulfur emission conditions, then the contribution of each of the configured gases to the sulfur dioxide of the mixed gas is calculated based on the real-time parameters of at least one of the configured gases. Based on the contribution of each sulfur dioxide, the proportion of each gas in the mixed gas is re-determined to obtain mixed gas that meets the low sulfur emission conditions. Specifically, based on the sulfur dioxide contribution of each gas, the proportion of each gas in the mixed gas production is re-determined to obtain mixed gas that meets the low sulfur emission conditions. This includes: identifying the target gas with the highest sulfur dioxide contribution, the first associated gas with a medium sulfur dioxide contribution, and the second associated gas with the lowest sulfur dioxide contribution from all gas configurations; calculating the threshold flow rate of the target gas using a preset formula; wherein the threshold flow rate of the target gas is the maximum value of V1 calculated using the preset formula; wherein the preset formula is: ;in, Let Si be the measured total sulfur content of the i-th configuration gas, Vi be the hourly flow rate of the i-th configuration gas, and ni be the amount of flue gas produced per cubic meter of combustion of the i-th configuration gas. The proportion of the target configuration gas is adjusted according to the threshold flow rate to obtain a new proportion. It is then determined whether the gas to be mixed meets a preset mixing standard based on the new proportion. When the gas to be mixed meets the preset mixing standard, a mixed gas meeting low sulfur emission conditions is generated according to the new proportion. When the gas to be mixed does not meet the preset mixing standard, the calorific values ​​of the first and second associated configuration gases are obtained. Based on the calorific values ​​of the first and second associated configuration gases and the threshold flow rate of the target configuration gas, the current proportion of the first and second associated configuration gases is adjusted according to preset rules until the preset mixing standard of the gas to be mixed is met.

2. The method according to claim 1, characterized in that, Collect real-time parameters of at least one of the configured gases, and estimate the sulfur content in the mixed gas based on the real-time parameters of the configured gases, including: Real-time data collection of the component proportions of different gas components in each configuration gas, measured values ​​of total sulfur content, and hourly flow rate; Based on the proportion of each component, the amount of flue gas produced by the combustion of each of the configured gases per cubic meter is calculated; Based on the measured total sulfur content of each of the configured gases, the hourly flow rate, and the amount of flue gas produced by the combustion of each unit cubic meter of gas, the sulfur content in the mixed gas is estimated.

3. The method according to claim 2, characterized in that, Based on the proportions of each component, the amount of flue gas produced by the combustion of each of the configured gases per cubic meter is calculated, including: Based on the proportions of each component, the amount of flue gas produced by the combustion of each of the configured gases per cubic meter is calculated using a preset formula; wherein the preset formula is: ； Where, n i w represents the amount of flue gas produced by the combustion of a unit cubic meter of gas in the i-th configuration. H2 w represents the volume percentage of H2 in the i-th configuration. CO w represents the volume percentage of CO in the gas for the i-th configuration. CH4 w represents the volume percentage of CH4 in the i-th configuration. CnHm Let w be the volume percentage of CnHm in the i-th configuration. k Let be the volume percentage of the k-th gas in the i-th configuration.

4. The method according to claim 2, characterized in that, Based on the measured total sulfur content of each of the aforementioned gas configurations, the hourly flow rate, and the amount of flue gas produced per unit cubic meter of gas combustion, the sulfur content in the mixed gas is estimated, including: Based on the measured total sulfur content of each of the configured gases, the hourly flow rate, and the amount of flue gas produced by combustion per unit cubic meter of gas, the sulfur content of the mixed gas is calculated according to a preset formula; wherein, the preset formula is: ； Among them, (SO2) （初始） Let n be the sulfur dioxide content in the flue gas produced after the combustion of the mixed gas, Si be the measured total sulfur content of the i-th configuration gas, Vi be the hourly flow rate of the i-th configuration gas, and n be the total sulfur content of the mixed gas. i Let be the amount of flue gas produced by the combustion of a unit cubic meter of gas in the i-th configuration.

5. The method according to any one of claims 1-4, characterized in that, Based on at least one real-time parameter of each of the aforementioned gas configurations, calculate the contribution of each of the aforementioned gas configurations to the sulfur dioxide content of the mixed coal gas, including: Based on at least one real-time parameter of each of the configured gases, the contribution of each configured gas to sulfur dioxide in the mixed gas is calculated using a preset formula; wherein the preset formula is: ； Where Mi represents the contribution of the i-th configuration gas to the sulfur dioxide content in the flue gas produced after the combustion of the mixed gas, Si represents the measured total sulfur content of the i-th configuration gas, and n i Let be the amount of flue gas produced by the combustion of a unit cubic meter of gas in the i-th configuration.

6. The method according to claim 1, characterized in that, After adjusting the current ratio of the first associated configuration gas and the second associated configuration gas according to preset rules until the preset mixing standard of the gas to be mixed is met, the process further includes: Determine whether the sulfur content in the mixed gas exceeds a threshold based on the current proportion; If the threshold is not exceeded, then the mixed gas that meets the low sulfur emission conditions will be generated according to the new proportion. If the threshold is exceeded, the operation of adjusting the current ratio of the first associated configuration gas and the second associated configuration gas based on preset rules will be performed until the termination condition is met.

7. An automatic control device for the sulfur content in mixed coal gas, characterized in that, include: A mixed gas generation module is used to mix various types of gas according to a preset ratio to obtain mixed gas; wherein, the ratio is the hourly flow rate of each type of gas fed into the mixed gas furnace. The mixed gas sulfur content calculation module is used to collect real-time parameters of at least one of the configured gases and estimate the sulfur content in the mixed gas based on the real-time parameters of the configured gases. The sulfur dioxide contribution calculation module is used to calculate the sulfur dioxide contribution of each of the configured gases to the mixed gas based on at least one of the real-time parameters of each configured gas if it is determined that the sulfur content does not meet the low sulfur emission conditions. The proportioning reset module is used to redetermine the proportion of each gas in the production of mixed gas according to the contribution of each sulfur dioxide, so as to obtain mixed gas that meets the low sulfur emission conditions. The proportioning reset module includes: a target configuration gas acquisition unit, used to acquire, from all configuration gases, the target configuration gas with the highest sulfur dioxide contribution, a first associated configuration gas with a medium sulfur dioxide contribution, and a second associated configuration gas with the lowest sulfur dioxide contribution; and a threshold flow rate calculation unit, used to calculate the threshold flow rate of the target configuration gas using a preset formula; wherein the threshold flow rate of the target configuration gas is the maximum value of V1 calculated using the preset formula; wherein the preset formula is: ;in, Here, Si is a preset threshold for the sulfur content of the mixed gas, Vi is the measured total sulfur content of the i-th configuration gas, ni is the hourly flow rate of the i-th configuration gas, and ni is the amount of flue gas produced per cubic meter of combustion of the i-th configuration gas. A first proportion adjustment unit is used to adjust the proportion of the target configuration gas according to the threshold flow rate to obtain a new proportion. A new proportion judgment unit is used to determine whether the gas to be mixed meets a preset mixing standard based on the new proportion. A low-sulfur mixed gas generation unit is used to generate low-sulfur mixed gas when the gas to be mixed meets the preset... When the mixing standard is met, a mixed gas that meets the low sulfur emission conditions is generated according to the new ratio. The calorific value acquisition unit is used to acquire the calorific values ​​of the first associated configuration gas and the second associated configuration gas respectively when the gas to be mixed does not meet the preset mixing standard. The second ratio adjustment unit is used to adjust the current ratio of the first associated configuration gas and the second associated configuration gas according to the calorific values ​​of the first associated configuration gas and the second associated configuration gas and the threshold flow rate of the target configuration gas, according to a preset rule, until the preset mixing standard of the gas to be mixed is met.

8. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the automatic control method for the sulfur content in the mixed gas according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the automatic control method for the sulfur content in the mixed gas as described in any one of claims 1-6.

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