Operating guide system of coal gasification plant and apparatus and method therefor

Patent metadata

Field	Value
Publication number	US-11859144-B2
Application number	US-202015931583-A
Country	US
Kind code	B2
Filing date	May 14, 2020
Priority date	May 20, 2019
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

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.

First claim

What is claimed is:

1. An operating guide system of a plant utilizing coal gasification, the operating guide system comprising:
an input interface;
a screen;
a processor; and
a storage, connected with the processor by a bus, storing one or more programs configured to be executed by the processor, the one or more programs including instructions for:
receiving, by the input interface, an input selecting a fuel having basic attributes information and slag attributes information;
determining, before the plant is started, gasification suitability type information of the selected fuel, based on a first comparison between the basic attributes information of the selected fuel and a first predetermined reference value and a second comparison between the slag attributes information of the selected fuel and a second predetermined reference value;
storing the gasification suitability type information;
generating performance analysis information of the plant by analyzing, while the plant is operated using the selected fuel, gasifier performance information and synthesis gas cooler performance information of the plant;
generating an operation guide information indicating operation control values for the operation of the plant based on the generated performance analysis of the plant; and
displaying, on the screen, the operation guide information with the operation control values,
wherein the basic attributes information includes coal heating amount (MJ/kg, MAF), volatile matter (wt %, MF), Cl+F (wt %, AR), Fe 2 O 3 (wt %, ash), Na 2 O+K 2 O (wt %, ash), S/A ratio (w/w, ash), and ash (wt %, MF) of the selected fuel.

2. The operating guide system of claim 1 , wherein the one or more programs further include instruction for:
generating an action guide information providing abnormality prevention control values for controlling the plant which are used in preventing an abnormal operation predicted in the plant based on the performance analysis information of the plant.

3. The operating guide system of claim 1 , wherein the determining gasification suitability type information comprising:
outputting the determined gasification suitability type information by classifying the selected fuel into one of a plurality of fuel types, the plurality fuel types including a first fuel type being a coal which may be used without being added with flux or another coal, a second fuel type being a coal which may be used when the flux is added, a third fuel type being a coal which may be used when mixed with another coal, and a fourth fuel type being a coal which is not suitable for the gasification.

4. The operating guide system of claim 1 , wherein the determining gasification suitability type information comprising:
when the selected fuel includes coal and flux, determining the gasification suitability type information based on a flux input ratio provided by the input.

5. The operating guide system of claim 1 , wherein the determining gasification suitability type information:
when the selected fuel includes a primary coal and a secondary coal to be mixed with the primary coal, determining the gasification suitability type information while increasing a mixing ratio of the secondary coal by a predetermined ratio.

6. The operating guide system of claim 1 , wherein the one or more programs further include instructions for:
deriving operating conditions information, the derived operating conditions including upper limit and lower limit temperatures of slag and upper limit and lower limit temperatures of gasifier for the selected fuel.

7. The operating guide system of claim 6 , wherein the driving operating conditions information comprises:
deriving the upper limit and lower limit temperatures of slag by analyzing a crystal phase and solid-liquid equilibrium temperature of slag of the selected fuel and,
deriving the upper limit and lower limit temperatures of gasifier temperature based on the derived upper limit and lower limit temperatures of slag.

8. The operating guide system of claim 1 , wherein the one or more programs further include instructions for:
generating a start-up table comprising a supply fuel input amount and main control factor state values for each step of a start-up process, the start-up process comprising coal burner stages of start, ready, and load up, and
displaying, on the screen, the supply fuel input amount and the main control factor state values for each step of the start-up process.

9. The operating guide system of claim 8 , wherein the generating the start-up table comprises:
generating 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.

10. The operating guide system of claim 1 ,
wherein the one or more programs further includes instructions for:
generating, when an event for a plant stop occurs, a stop guide information for stopping the plant, the stop guide information including control values requiring a user input for each step of a plurality of stops for the plant stop.

11. An operating guide system of a plant utilizing coal gasification, the operating guide system comprising:
an input interface;
a screen;
a processor; and
a storage, connected with the processor by a bus, storing one or more programs configured to be executed by the processor, the one or more programs including instructions for:
receiving, by the input interface, an input selecting a fuel having basic attributes information and slag attributes information;
determining, before the plant is started, gasification suitability type information of the selected fuel, based on a first comparison between the basic attributes information of the selected fuel and a first predetermined reference value and a second comparison between the slag attributes information of the selected fuel and a second predetermined reference value;
storing the gasification suitability type information;
generating performance analysis information of the plant by analyzing, while the plant is operated using the selected fuel, gasifier performance information and synthesis gas cooler performance information of the plant;
generating an operation guide information indicating operation control values for the operation of the plant based on the generated performance analysis of the plant; and
displaying, on the screen, the operation guide information with the operation control values,
wherein the slag attributes information includes coal conversion temperature (° C.), total slag thickness (mm), liquidus slag thickness (mm), average slag viscosity (poise), and muffle length versus slag thickness {%) of the selected fuel.

12. An operating guide system of a plant utilizing coal gasification, the operating guide system comprising:
an input interface;
a screen;
a processor; and
a storage, connected with the processor by a bus, storing one or more programs configured to be executed by the processor, the one or more programs including instructions for:
receiving, by the input interface, an input selecting a fuel having basic attributes information and slag attributes information;
determining, before the plant is started, gasification suitability type information of the selected fuel, based on a first comparison between the basic attributes information of the selected fuel and a first predetermined reference value and a second comparison between the slag attributes information of the selected fuel and a second predetermined reference value;
storing the gasification suitability type information;
generating performance analysis information of the plant

Assignees

• Doosan Enerbility Co Ltd
• Korea Western Power Co Ltd

Inventors

• Kim Bong Keun
• Yoo Jeong Seok
• Kim Sung Hee
• Oh Jong Ho
• Kim Jun Seok

Classifications

• C10J3/723 Primary

  Controlling or regulating the gasification process · CPC title

• G01N33/222 Primary

  Solid fuels, e.g. coal · CPC title

• G05B23/0283 Primary

  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) · CPC title

• C10J2300/06

  Modeling or simulation of processes · CPC title

• C10J3/00 Primary

  Production of combustible gases containing carbon monoxide from solid carbonaceous fuels (destructive distillation processes C10B) · CPC title