# US 2020/0369971 A1 · Operating guide system of coal gasification plant and apparatus and method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0369971 A1 - Document ID: US20200369971A1 - Status: Published application - Kind: A1 - Application number: 15/931,583 - Filed: 2020-05-14 - Published: 2020-11-26 - Earliest claimed: 2019-05-20 - Assignees: Doosan Heavy Industries Construction Co., Ltd; Korea Western Powor Co., Ltd. - Applicants: Doosan Heavy Industries & Construction Co., Ltd.; Korea Western Powor Co., Ltd - Inventors: Bong Keun KIM; Jeong Seok YOO; Sung Hee KIM; Jong Ho OH; Jun Seok KIM - Web page: https://patentgrep.com/patent/US20200369971A1 ## CPC - C10J 3/723: {Controlling or regulating the gasification process} - C10J 3/726: {Start-up} - G01N 33/222: {Solid fuels, e.g. coal} - G05B 23/0283: {Predictive maintenance, e.g. involving the monitoring of a system and, based on the monitoring results, taking decisions on the maintenance schedule of the monitored system; Estimating remaining useful life [RUL] (preventive maintenance, i.e. planning maintenance according to the available resources without monitoring the system G06Q10/06)} - C10J 2300/06: Modeling or simulation of processes - C10J 2300/093: Coal - C10J 2300/0959: Oxygen - C10J 2300/0976: as steam - Y02E 20/16: Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT] - Y02E 20/18: Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS] - C10J: PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES (synthesis gas from liquid or gaseous hydrocarbons C01B; underground gasification of minerals E21B43/295); CARBURETTING AIR OR OTHER GASES - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) - G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract An operating guide system of a plant utilizing coal gasification includes a performance analyzer for analyzing performance of the plant by analyzing gasifier performance and synthesis gas cooler performance during an operation of the plant; an operation guide generator for generating an operation guide indicating control values for the operation of the plant based on the performance analysis of the plant; an action guide generator for generating an action guide indicating control values for controlling the plant to prevent an abnormal situation predicted in the plant based on the performance analysis of the plant; and a fuel determiner for determining gasification suitability of an analysis target fuel selected by a user before the plant is started, the gasification suitability including basic suitability and suitability of slag behavior. ## Claims ### Claim 1 An operating guide system of a plant utilizing coal gasification, the operating guide system comprising: a performance analyzer for analyzing performance of the plant by analyzing gasifier performance and synthesis gas cooler performance during an operation of the plant; and an operation guide generator for generating an operation guide indicating control values for the operation of the plant based on the performance analysis of the plant. ### Claim 2 (depends on 1) The operating guide system of claim 1, further comprising an action guide generator for generating an action guide indicating control values for controlling the plant to prevent an abnormal situation predicted in the plant based on the performance analysis of the plant. ### Claim 3 (depends on 1) The operating guide system of claim 1, further comprising a fuel determiner for determining gasification suitability of an analysis target fuel selected by a user before the plant is started, the gasification suitability including basic suitability and suitability of slag behavior. ### Claim 4 (depends on 3) The operating guide system of claim 3, wherein the fuel determiner is configured to determine the gasification suitability of the analysis target fuel by determining the basic suitability and the suitability of slag behavior based on whether the analysis target fuel satisfies a predetermined reference value of basic attributes and a predetermined reference value of slag attributes. ### Claim 5 (depends on 3) The operating guide system of claim 3, wherein the fuel determiner is configured to output the determined gasification suitability by classifying whether the analysis target fuel is coal which may be used without flux or mixed coal, coal which may be used when the flux is input, coal which requires the mixed coal, or coal which is not suitable for the gasification. ### Claim 6 (depends on 3) The operating guide system of claim 3, wherein the fuel determiner is configured to determine the gasification suitability based on a flux input ratio input by the user, when the analysis target fuel comprises coal and flux. ### Claim 7 (depends on 3) The operating guide system of claim 3, wherein the fuel determiner is configured to determine the gasification suitability while increasing a mixing ratio of target coal at a predetermined ratio, when the primary coal and at least one target coal added to the primary coal are selected by the user. ### Claim 8 (depends on 3) The operating guide system of claim 3, further comprising an operating condition deriver for deriving operating conditions when the fuel is selected, the derived operating conditions including upper limit and lower limit temperatures of slag and upper limit and lower limit temperatures of gasifier. ### Claim 9 (depends on 8) The operating guide system of claim 8, wherein the operating condition deriver is configured to derive the slag temperature limits by analyzing the crystal phase and solid-liquid equilibrium temperature of slag of the selected fuel and to derive the gasifier temperature limits based on the derived slag temperature limits. ### Claim 10 (depends on 1) The operating guide system of claim 1, further comprising a start guide generator configured to generate a start-up table comprising a supply fuel input amount and main control factor state values for each step of a start-up process comprising coal burner stages of start, ready, and load up, and a guide based on the starting of the plant; and to output the supply fuel input amount and the main control factor state values for each step of the start-up process, when the plant is started. ### Claim 11 (depends on 10) The operating guide system of claim 10, wherein the start guide generator is configured to generate the supply fuel input amount and the main control factor state values for each step of the start-up process in the reverse order of the start-up process based on the supply fuel input amount of 100% load. ### Claim 12 An operating guide system comprising: a fuel determiner for determining gasification suitability of a selected analysis target fuel when the analysis target fuel is selected, before a plant is started; an operation condition deriver for deriving operating conditions when the fuel is selected, the derived operating conditions including upper limit and lower limit temperatures of slag and upper limit and lower limit temperatures of gasifier; a start guide generator for generating a guide based on the starting of the plant; a performance analyzer for analyzing performance of the plant by analyzing gasifier performance and synthesis gas cooler performance during an operation of the plant; and an operation guide generator for generating an operation guide indicating control values for operating the plant based on the performance analysis of the plant. ### Claim 13 An operating guide method of a plant utilizing coal gasification, the operating guide method comprising: analyzing performance of the plant by analyzing gasifier performance and synthesis gas cooler performance during an operation of the plant; and generating an operation guide indicating control values for operating the plant based on the performance analysis of the plant. ### Claim 14 (depends on 13) The operating guide method of claim 13, further comprising, after the plant performance analyzing, generating an action guide indicating control values for controlling the plant to prevent an abnormal situation predicted in the plant based on the performance analysis of the plant. ### Claim 15 (depends on 13) The operating guide method of claim 13, further comprising, before the plant performance analyzing: determining, before the plant is started, gasification suitability of an analysis target fuel by determining basic suitability and suitability of slag behavior based on whether the analysis target fuel satisfies a predetermined reference value of basic attributes and a predetermined reference value of slag attributes when the analysis target fuel is selected; and outputting the determined gasification suitability by classifying whether the analysis target fuel is coal which may be used without flux or mixed coal, coal which may be used when the flux is input, coal which requires the mixed coal, or coal which is not suitable for the gasification. ### Claim 16 (depends on 15) The operating guide method of claim 15, wherein the gasification suitability determining comprises: determining gasification suitability based on a flux input ratio input by a user, when the analysis target fuel comprises coal and flux; or determining the gasification suitability while increasing a mixing ratio of target coal at a predetermined ratio, when the analysis target fuel comprises a primary coal selected by the user and at least one target coal added to the primary coal. ### Claim 17 (depends on 13) The operating guide method of claim 13, further comprising, before the plant performance analyzing: deriving operating conditions comprising upper limit and lower limit temperatures of slag and upper limit and lower limit temperatures of gasifier based on the selected fuel, when fuel to be input to the plant is selected; generating a start-up table comprising supply fuel input amount and main control factor state values for each step of a start-up process comprising coal burner stages of start, ready, and load up, when the plant is started; and generating a start guide based on the starting of the plant by outputting the supply fuel input amount and the main control factor state values for each step of the start-up process based on the start-up table. ### Claim 18 (depends on 17) The operating guide method of claim 17, wherein the slag temperature limits are derived by analyzing the crystal phase and solid-liquid equilibrium temperature of slag of the selected fuel, and wherein the gasifier temperature limits are derived based on the derived slag temperature limits. ### Claim 19 (depends on 17) The operating guide method of claim 17, wherein the supply fuel input amount and the main control factor state values of the start-up table are generated for each step of the start-up process in the reverse order of the start-up process based on the supply fuel input amount of 100% load. ### Claim 20 (depends on 13) The operating guide method of claim 13, further comprising, after the operation guide generating, generating a stop guide indicating control values for each step of a plurality of steps which stop the plant, when a stop event occurs during the operation of the plant.