High-intelligence and high-automation process logic conversion control method

Abstract

The invention discloses a high-intelligence and high-automation process logic conversion control method, which is used for realizing SIS interlocking protection among systems and testing each valve, and defines that only one state may occur in a process disposal process, process selection, oven baking, oven stopping, airtightness, cooling, feeding, operation, operation stopping and maintenance in STD conversion. Through logic limitation of the SIS system, synchronous operation of a plurality of process scenes is avoided, and the method has the technical characteristics that the safety of the SIS system and the process can be effectively guaranteed, logic control participates in automatic control, and the possibility of artificial judgment errors is reduced.

Description

Technical Field

[0001] The invention relates to a highly intelligent and automated process logic conversion control method, belonging to the field of petrochemical industry. Background Art

[0002] Petrochemical and coal chemical processes are important components of the energy and raw materials industry. Among them, coal gasification process and heavy oil gasification process, as a part of energy development, have played a pivotal role in the current stage of long-chain development of chemicals. Taking coal gasification process as an example, the relatively mature processes in the industry and with a large market share are mainly represented by GE Texaco water-coal slurry pressurized gasification process, AP / Shell pulverized coal gasification process, Yankuang Guotuo opposed water-coal slurry pressurized gasification process and fixed-bed coal gasification process; taking heavy oil gasification process as an example, it is currently in the market development stage. Domestically and internationally, it is increasingly showing a trend of large-scale refining and chemical integration due to environmental protection and crude oil indicators. The industrial chain of chemical products is extending and developing in depth, high-end, multi-variety and long-chain. On this basis, heavy oil gasification process has once again shown strong vitality, represented by Shell / AP heavy oil gasification process, GE heavy oil gasification process and Yankuang Guotuo heavy oil gasification process. The gasifier, the core equipment of each gasification technology, has relatively high requirements for the automatic control system. Both operation and control must adopt advanced SIS system and DCS system. From the perspective of system safety, the logic control is completed by an independent SIS system, and the loop control is completed by the DCS system. The gasifier system is highly dependent on the instrumentation and control system. At present, the automatic control systems of domestic coal gasification processes and heavy oil gasification processes generally use control systems with low automation and intelligence levels, and have not achieved automatic judgment, confirmation and execution of the process from production preparation to start-up operation. Summary of the invention

[0003] In order to solve the above-mentioned problems of the prior art, the present invention provides a highly intelligent and highly automated process logic conversion control method with technical characteristics that can effectively ensure the safety of the SIS system and the process, improve the participation of logic control in automatic control, and reduce the possibility of human judgment errors.

[0004] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0005] The invention discloses a highly intelligent and highly automated process logic conversion control method, including an oxygen supply system, a coal slurry supply system, a gasification gas cooling system, a gasifier liquid level control system, a burner cooling water system, and a low-pressure ammonia gas blowing system, including SIS interlock protection and valve testing between various systems; the SIS interlock protection includes: UZ-X001 feed oil feed pump protection interlock:

[0006] When the lubricating oil pressure of the feed oil pump is less than LL (0.3MPa), the feed oil feed pump 31811-P1001 stops; when the lubricating oil pressure of the feed oil pump is greater than LL (0.3MPa), the feed oil feed pump 31811-P1001 is allowed to start;

[0007] UZ-0002 oxygen main nitrogen pressure equalization reflux protection interlock:

[0008] When the pressure difference before and after the oxygen main pipe nitrogen equalizing pressure valve XZV10019 is less than L (a preset value, which can be set according to actual needs, and the following other numerical comparisons are also set values), the interlock closes the oxygen main pipe nitrogen equalizing pressure valve XZV10019; when the pressure difference before and after the oxygen main pipe nitrogen equalizing pressure valve XZV10019 is greater than H (a preset value, which can be set according to actual needs), the reset interlock opens the oxygen main pipe nitrogen equalizing pressure valve XZV10019;

[0009] UZ-X003 single series oxygen pipeline nitrogen equalizing pressure reflux protection interlock: when the pressure difference before and after the oxygen main pipe nitrogen equalizing pressure valve XZV10019 is less than L (a preset value, which can be set according to actual needs), the interlock closes the oxygen main pipe nitrogen equalizing pressure valve XZV10019; when the pressure difference before and after the oxygen main pipe nitrogen equalizing pressure valve XZV10019 is greater than H (a preset value, which can be set according to actual needs), the interlock is reset to open the oxygen main pipe nitrogen equalizing pressure valve XZV10019;

[0010] UZ-X004 high-pressure steam pipeline nitrogen plug reflux protection interlock: when the high-pressure nitrogen pressure is less than LL (a preset value, which can be set according to actual needs), the interlock closes the high-pressure steam pipeline nitrogen equalizing pressure valve XZV10009; when the high-pressure nitrogen pressure is greater than L (a preset value, which can be set according to actual needs), the reset interlock opens the high-pressure steam pipeline nitrogen XZV10009;

[0011] UZ-X007 medium and high pressure nitrogen reflux protection interlock: When the medium and high pressure nitrogen pressure is less than LL (a preset value, which can be set according to actual needs), the following valves are prohibited from opening: main burner factory air nitrogen plug cut-off valve XZV10039; burner refinery gas nitrogen plug cut-off valve XZV10053;

[0012] UZ-X008 medium-pressure nitrogen reflux protection interlock: When the pressure difference between the medium-pressure nitrogen and the water scrubber outlet is less than LL (a preset value that can be set according to actual needs), the following valves are prohibited from opening: medium-pressure nitrogen upstream cut-off valve XZV10025; oxygen pipeline medium-pressure nitrogen blow-off valve XZV10023; high-pressure steam pipeline medium-pressure nitrogen blow-off valve XZV10024; auxiliary burner medium-pressure nitrogen cut-off valve XZV10042; water scrubber medium-pressure nitrogen upstream cut-off valve XZV10034; water scrubber medium-pressure nitrogen downstream cut-off valve XZV10035;

[0013] UZ-X011 oxygen valve equalizing pressure protection interlock: if the pressure difference before and after the upstream cut-off valve XZV10020 of the oxygen main pipe is less than 0.3MPa, the nitrogen plug valve XZV10019 of the oxygen main pipe is closed, and the downstream cut-off valve XZV10021 of the oxygen main pipe is opened, the valve XZV-00020 is allowed to be opened; if the pressure difference before and after the downstream cut-off valve XZV-00021 of the oxygen main pipe is less than 0.3MPa, and the nitrogen plug valve XZV10019 of the oxygen main pipe is closed, the valve XZV10021 is allowed to be opened; if the pressure difference before and after the oxygen cut-off valve XZV10020 of the oxygen preheater inlet is less than 0.3MPa, and the nitrogen equalizing pressure valve XZV10019 of the oxygen pipeline is closed, the valve XZV10020 is allowed to be opened;

[0014] UZ-X015 accident chilled water tank protection interlock: when the accident chilled water tank liquid level is less than LL or when the pressure difference between the accident chilled water tank and the gasifier is less than LL (the preset value, which can be set according to actual needs), the interlock closes the accident chilled water tank outlet cut-off valve XZV10021; when the accident chilled water tank liquid level is greater than LL (the preset value, which can be set according to actual needs) and when the pressure difference between the accident chilled water tank and the gasifier is greater than L (the preset value, which can be set according to actual needs), the accident chilled water tank outlet cut-off valve XZV10021 is released.

[0015] Preferably, the valve tests include: oxygen valve group test, medium-pressure nitrogen valve group test, high-pressure steam valve group test, similar valve group test, single valve test, oil channel valve test, extraction and venting main channel valve test, water washing tower medium-pressure nitrogen valve group test; the valve stroke test flag is true, true=1, and the valve stroke test flag is false, false=0;

[0016] If the valve test timer is greater than the valve setting switch time and the valve stroke test flag is true, the valve test fails and an alarm is triggered; if the valve test timer is less than the valve setting switch time and the valve stroke test flag is true, the relevant valve test passes and SOE records the time;

[0017] Oxygen valve group test test:

[0018] The valve actions are as follows: open XZV10011, start the XZV10011 opening timer, and when it is confirmed that XZV10011 is open: close XZV10011, stop the XZV10011 opening timer, and start the XZV10011 closing timer;

[0019] When it is confirmed that XZV10011 is closed: open XZV10012, start the XZV10012 opening timer, and stop the XZV10011 closing timer; when it is confirmed that XZV10012 is open: close XZV10012, start the XZV10012 closing timer, and stop the XZV10012 opening timer; when it is confirmed that XZV10012 is closed: open XZV10015, start the XZV10015 opening timer, and stop the XZV10012 closing timer; when it is confirmed that XZV10015 is open: close XZV10015, start the XZV10015 closing timer, and stop the XZV10015 opening timer; when it is confirmed that XZV10015 is closed: stop the XZV10015 closing timer;

[0020] Medium-pressure nitrogen valve group test test: The valve actions are as follows: start the XZV10023 opening timer, open XZV10023, when it is confirmed that XZV10023 is open: close XZV10023, start the XZV10023 closing timer, stop the XZV10023 opening timer; when it is confirmed that XZV10023 is closed, open XZV10024, start the XZV10024 opening timer, stop the XZV10023 closing timer; when it is confirmed that XZV10024 is open: close XZV10024, start the XZV10024 closing timer, stop the XZV10024 opening timer; when it is confirmed that XZV10024 is closed: open XZV10024 042, start the opening timer of XZV10042, stop the closing timer of XZV10024; when it is confirmed that XZV10042 is open: close XZV10042, start the closing timer of XZV10042, stop the opening timer of XZV10042; when it is confirmed that XZV10042 is closed: open XZV10025, start the opening timer of XZV10025, stop the closing timer of XZV10042; when it is confirmed that XZV10025 is open: close XZV10025, start the closing timer of XZV10025, stop the opening timer of XZV10025; when it is confirmed that XZV10025 is closed: stop the closing timer of XZV10025;

[0021] High pressure steam valve test:

[0022] The valve actions are as follows: start the opening timer of XZV10007, open XZV10007, when it is confirmed that XZV10007 is open: close XZV10007, start the closing timer of XZV10007, stop the opening timer of XZV10007; when it is confirmed that XZV10007 is closed: open XZV10009, start the opening timer of XZV10009, stop the closing timer of XZV10007; when it is confirmed that XZV10009 is open: close XZV10009, start the closing timer of XZV10009, stop the opening timer of XZV10009; when it is confirmed that XZV10009 is closed: open XZV10006, start Start the opening timer of XZV10006 and stop the closing timer of XZV10009; when it is confirmed that XZV10006 is open: close XZV10006, start the closing timer of XZV10006, and stop the opening timer of XZV10006; when it is confirmed that XZV10006 is closed: open XZV10008, start the opening timer of XZV10008, and stop the closing timer of XZV10006; when it is confirmed that XZV10008 is open: close XZV10008, start the closing timer of XZV10008, and stop the opening timer of XZV10008; when it is confirmed that XZV10008 is closed: stop the closing timer of XZV10008;

[0023] Similar valve group test:

[0024] The valve actions are as follows: start the opening timer of XZV10001, open XZV10001, when it is confirmed that XZV10001 is open: close XZV10001, start the closing timer of XZV10001, stop the opening timer of XZV10001, when it is confirmed that XZV10001 is closed: open XZV10002, start the opening timer of XZV10002, stop the closing timer of XZV10001; when it is confirmed that XZV10002 is open: close XZV10002, start Start the closing timer of XZV10002, stop the opening timer of XZV10002, when it is confirmed that XZV10002 is closed: open XZV10003, start the opening timer of XZV10003, stop the closing timer of XZV10002; when it is confirmed that XZV10003 is open: close XZV10003, start the closing timer of XZV10003, stop the opening timer of XZV10003; when it is confirmed that XZV10003 is closed: stop the closing timer of XZV10003;

[0025] Single valve test:

[0026] The valve actions are as follows: open XZV10001, start the XZV10001 opening timer, when it is confirmed that XZV10001 is open: close XZV10001, start the XZV10001 closing timer, stop the XZV10001 opening timer; when it is confirmed that XZV10001 is closed: stop the XZV10001 closing timer;

[0027] Oil channel valve test:

[0028] The valve actions are as follows: open XZV10001, start the XZV10001 opening timer, when it is confirmed that XZV10001 is open: close XZV10001, start the XZV10001 closing timer, and stop the XZV10001 opening timer; when it is confirmed that XZV10001 is closed: open XZV10002, start the XZV10002 opening timer, and stop the XZV10001 closing timer; when it is confirmed that XZV10002 is open: close XZV10002, start the XZV10002 closing timer, and stop the XZV10002 opening timer; when it is confirmed that XZV10002 is closed: open XZV10003, start Start the opening timer of XZV10003 and stop the closing timer of XZV10002; when it is confirmed that XZV10003 is open: close XZV10003, start the closing timer of XZV10003, and stop the opening timer of XZV10003; when it is confirmed that XZV10003 is closed: open XZV10004, start the opening timer of XZV10004, and stop the closing timer of XZV10003; when it is confirmed that XZV10004 is open: close XZV10004, start the closing timer of XZV10004, and stop the opening timer of XZV10004; when it is confirmed that XZV10004 is closed: stop the closing timer of XZV10004;

[0029] Pumping and venting main channel valve test:

[0030] The valve actions are as follows: close XZV100014A, start the XZV100014A closing timer, when it is confirmed that XZV100014A is closed: open XZV100014A, start the XZV100014A opening timer, stop the XZV100014A closing timer; when it is confirmed that XZV100014A is open, stop the XZV100014A opening timer;

[0031] Water scrubber medium pressure nitrogen valve group test:

[0032] The valve actions are as follows: close XZV100036, start the XZV100036 closing timer, when it is confirmed that XZV100036 is closed: open XZV10035, start the XZV10035 opening timer, stop the XZV10036 closing timer; when it is confirmed that XZV10035 is open: close XZV10035, start the XZV10035 closing timer, stop the XZV10035 opening timer; when it is confirmed that XZV10035 is closed:

[0033] Open XZV10034, start the XZV10034 opening timer, and stop the XZV10035 closing timer; when it is confirmed that XZV10034 is opened: close XZV10034, start the XZV10034 closing timer, and stop the XZV10034 opening timer; when it is confirmed that XZV10034 is closed: open XZV10036, start the XZV10036 opening timer, and stop the XZV10034 closing timer; when it is confirmed that XZV10036 is opened: stop the XZV10036 opening timer.

[0034] Preferably, it includes maintenance state conversion, airtight state conversion, cooling state conversion, selection state conversion, oven state conversion, feeding state conversion, system operation state conversion, oven stop state conversion, burner protection state conversion, feed oil pump state conversion;

[0035] Maintenance status transition: including maintenance-step 1 maintenance preparation; maintenance-step 2 system maintenance; maintenance-step 3 maintenance confirmation; maintenance-step 4 maintenance completion;

[0036] Maintenance - Step 2 System maintenance includes:

[0037] XZV10043 Syngas Venting Shut-off Valve Closed

[0038] HCV10043 water scrubber outlet synthesis gas remote control shutdown

[0039] PZT10043 water washing tower outlet pressure < LLL 0.05MPa

[0040] Gasifier furnace temperature: furnace temperature <LLL300℃.

[0041] Preferably, the airtight state conversion includes: airtight-step 1 airtight preparation; airtight-step 2 system pressure increase; airtight-step 3 system low pressure maintenance; airtight-step 4 system pressure increase; airtight-step 5 system high pressure maintenance; airtight-step 6 system pressure reduction; airtight-step 7 airtight completion; airtight-step 7 airtight completion includes: PZT10043 water washing tower outlet pressure <LLL (0.05MPa).

[0042] Preferably, the cooling state conversion includes: cooling-step 1 cooling preparation; cooling-step 2 medium-pressure nitrogen cooling; cooling-step 3 stopping medium-pressure nitrogen cooling; cooling-step 4 steam / oxygen channel air cooling preparation; cooling-step 5 steam / oxygen channel air cooling; cooling-step 6 stopping cooling; cooling-step 7 cooling completion; cooling-step 8 medium-pressure nitrogen as a standby for steam / oxygen channel air cooling;

[0043] Cooling - Step 5 Steam / Oxygen Channel Air Cooling includes:

[0044] HCV10043 water scrubber outlet synthesis gas remote control shutdown

[0045] XZV10043 Syngas Venting Shut-off Valve Closed

[0046] XZV10014A gasifier extractor cut-off valve is open

[0047] Cooling-Step 7 Cooling is completed including:

[0048] XZV10023 oxygen pipeline medium pressure nitrogen blowing valve closed

[0049] XZV10042 auxiliary burner medium pressure nitrogen cut-off valve closed

[0050] XZV10024 High-pressure steam pipeline medium-pressure nitrogen blowing valve closed

[0051] XZV10034 water scrubber medium pressure nitrogen upstream cut-off valve closed

[0052] XZV10035 water scrubber medium pressure nitrogen downstream cut-off valve closed

[0053] XZV10036 water washing tower pressure relief cut-off valve is open

[0054] XZV10025 medium pressure nitrogen upstream cut-off valve closed

[0055] XZV-X0037 Main Burner Factory Air Upstream Shut-off Valve Closed

[0056] XZV-X0038 Main burner factory air downstream cut-off valve closed

[0057] The XZV-X0014A gasifier extractor shut-off valve is closed.

[0058] Preferably, the selection state transition includes:

[0059] XZV10001 Feed oil cut-off valve closed

[0060] XZV10002 oil channel purge downstream valve closed

[0061] XZV10004 feed oil pipeline high pressure steam purge valve closed

[0062] XZV10011 oxygen upstream cut-off valve closed

[0063] XZV10012 oxygen downstream cut-off valve closed

[0064] FCV-X0010 oxygen channel steam regulating valve closed

[0065] FCV10006 main steam regulating valve closed

[0066] XZV10006 High-pressure steam upstream cut-off valve closed

[0067] XZV10007 High-pressure steam downstream cut-off valve closed

[0068] XZV10041 auxiliary burner steam cut-off valve closed

[0069] XZV10016 oxygen small flow nitrogen purge valve closed

[0070] XZV10025 medium pressure nitrogen upstream cut-off valve closed

[0071] The medium-pressure nitrogen blow valve in the XZV10023 oxygen pipeline is closed.

[0072] Preferably, the state transition of the oven includes: oven-step 1 oven preparation; oven-step 2 purge replacement; oven-step 3 ignition preparation; oven-step 4 auxiliary combustion ignition; oven-step 5 main combustion start; oven-step 6 final heating; oven-step 7 material feeding preparation;

[0073] Oven-Step 2 Purge Replacement includes:

[0074] XZV10023 oxygen pipeline medium pressure nitrogen blowing valve closed

[0075] XZV10024 High-pressure steam pipeline medium-pressure nitrogen blowing valve closed

[0076] XZV10025 single series medium pressure nitrogen upstream cut-off valve closed

[0077] XZV10034 water scrubber medium pressure nitrogen upstream cut-off valve closed

[0078] XZV10035 water scrubber medium pressure nitrogen downstream cut-off valve closed

[0079] XZV10036 water washing tower pressure relief cut-off valve is open

[0080] XZV10041 auxiliary burner steam cut-off valve closed

[0081] XZV10042 auxiliary burner medium pressure nitrogen cut-off valve closed

[0082] XZV10064 auxiliary burner factory air cut-off valve closed

[0083] XZV10065 auxiliary burner refinery gas upstream cut-off valve closed

[0084] XZV10066 auxiliary burner refinery gas downstream cut-off valve closed

[0085] XZV10051 main burner refinery gas upstream cut-off valve closed

[0086] XZV10052 main burner refinery gas downstream cut-off valve closed

[0087] XZV10037 main burner factory air upstream cut-off valve closed

[0088] XZV10038 main burner factory air downstream cut-off valve closed

[0089] Baking furnace - step 4 auxiliary ignition includes:

[0090] XZV10023 oxygen pipeline medium pressure nitrogen blowing valve closed

[0091] XZV10024 High-pressure steam pipeline medium-pressure nitrogen blowing valve closed

[0092] XZV10025 single series medium pressure nitrogen upstream cut-off valve closed

[0093] XZV10034 water scrubber medium pressure nitrogen upstream cut-off valve is open

[0094] XZV10035 water scrubber medium pressure nitrogen downstream cut-off valve is open

[0095] XZV10036 water washing tower pressure relief cut-off valve is closed

[0096] XZV-X0041 auxiliary burner steam cut-off valve closed

[0097] XZV10042 auxiliary burner medium pressure nitrogen cut-off valve closed

[0098] XZV10051 main burner refinery gas upstream cut-off valve closed

[0099] XZV10052 main burner refinery gas downstream cut-off valve closed

[0100] The XZV10014A gasifier extractor shut-off valve is open.

[0101] Preferably, the feeding state conversion includes feeding-step 1: shut down and start extraction; feeding-step 2: establish gasifier pressure; feeding-step 3: establish steam flow; feeding-step 4: start feeding; feeding-step 5: confirm feeding; feeding-step 6: establish oxygen flow; feeding-step 7: system pressure increase; feeding-step 2: establish gasifier pressure, including:

[0102] XZV10001 Feed oil cut-off valve closed

[0103] XZV10002 oil channel purge downstream valve closed

[0104] XZV10003 oil circulation valve open

[0105] XZV10004 feed oil pipeline high pressure steam purge valve closed

[0106] XZV10006 High-pressure steam upstream cut-off valve closed

[0107] XZV10007 High-pressure steam downstream cut-off valve closed

[0108] XZV10008 high pressure steam venting cut-off valve is open

[0109] XZV10011 oxygen upstream cut-off valve closed

[0110] XZV10012 oxygen downstream cut-off valve closed

[0111] XZV10013 oxygen venting shut-off valve is open

[0112] XZV10014A gasifier extractor cut-off valve closed

[0113] The XZV10014B gasifier extractor bypass line shut-off valve is closed.

[0114] Preferably, the interlock protection in the operating state during the system operating state conversion:

[0115] Chilling water flow protection interlock: When the gasifier temperature furnace temperature TI-X0032_37>LLL 300℃;

[0116] When the quenching water flow rate is less than LLLL and the gasifier liquid level is greater than or equal to HH, the emergency quenching water tank outlet shut-off valve XZV10021 is opened; when the gasifier liquid level is LI-X0011>HH, the emergency quenching water tank outlet shut-off valve XZV10021 is closed.

[0117] Preferably, the state transition of the stopped oven includes: stopping the oven-step 1 isolating the fuel gas; stopping the oven-step 2 isolating the factory air; stopping the oven-step 3 system purging; stopping the oven-step 4 purging completion; stopping the oven-step 5 selecting the burner state; stopping the oven-step 6 stopping the oven completion; stopping the oven-step 7 purging failure;

[0118] Stop the oven - Step 3 System purge includes:

[0119] XZV-X0037 Main Burner Factory Air Upstream Shut-off Valve Closed

[0120] XZV-X0038 Main burner factory air downstream cut-off valve closed

[0121] The factory air shut-off valve of XZV-X0064 auxiliary burner is closed.

[0122] Beneficial effects: It can effectively ensure the safety of SIS system and process, improve logic and automatic control, and reduce the possibility of human misjudgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0123] Figure 1 It is a structural block diagram of the present invention.

[0124] Figure 2 It is the general diagram of the automatic conversion of the logic control of the present invention. DETAILED DESCRIPTION

[0125] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments, and "X" below represents "1".

[0126] like Figure 1-2 The figure shows a specific embodiment of a highly intelligent and automated process logic conversion control method.

[0127] Maintenance (WH) status description

[0128] Valve action

[0129]

[0130]

[0131] Note: 1. Interlock action is executed when burner protection interlock is triggered

[0132] 2. When the outlet pressure of the water washing tower PZT-X0043 is less than LLL (0.05MPa), close it; when the outlet pressure of the water washing tower PZT-X0043 is greater than LLL (0.05MPa), open it.

[0133] 3. Execute interlock action when the chilled water protection interlock is triggered

[0134] DCS controller action

[0135]

[0136]

[0137] Airtight (QM) status description

[0138]

[0139] Automatic Actions:

[0140] Close the gasifier extractor cut-off valve XZV-X0014A

[0141] Close the gasifier extractor secondary line cut-off valve XZV-X0014B

[0142] After XZV-X0014A / B is closed

[0143] Close the upstream cut-off valve of the medium-pressure nitrogen in the water washing tower XZV-X0034 Close the downstream cut-off valve of the medium-pressure nitrogen in the water washing tower XZV-X0035 After XZV-X0034 / 35 is closed

[0144] Open the pressure relief cut-off valve XZV-X0036 between the water scrubber charging valves. Close the outlet pressure control PIC-X0043 of the water scrubber to 0%. Lock and close the synthesis gas venting cut-off valve XV-X0043. Airtight - Step 2 System pressure boost

[0145]

[0146]

[0147]

[0148] Automatic action in this state

[0149] Open the high-pressure nitrogen valve in the system to pressurize the system until the pressure reaches 2.0MPa

[0150] 1. Close the pressure relief cut-off valve XZV-X0036 between the water washing tower charging valves

[0151] 2. Open the medium pressure nitrogen upstream cut-off valve XZV-X0025

[0152] 3. Central oxygen / steam regulating valve FCV-X0015 release open to 100%

[0153] 4. Open the medium-pressure nitrogen blow valve XZV-X0023 on the oxygen pipeline

[0154] 5. Open the auxiliary burner medium pressure nitrogen cut-off valve XZV-X0042

[0155] 6. Open the medium-pressure nitrogen blow valve XZV-X0024 on the high-pressure steam pipeline

[0156] 7. When the pressure relief cut-off valve XZV-X0036 between the water washing tower charging valve is closed

[0157] 8. Open the upstream cut-off valve XZV-X0034 of the medium-pressure nitrogen in the water scrubber

[0158] 9. Open the downstream cut-off valve XZV-X0035 of the medium-pressure nitrogen in the water scrubber

[0159] 10. When the outlet pressure of the water washing tower PZT-X0043>L (2.0MPa), start the low pressure airtightness timer for 60s airtightness-step 4 system to increase pressure

[0160] Open the high-pressure nitrogen valve in the system to pressurize the system until the pressure reaches 6.8MPa

[0161] Cooling (JW) status description

[0162] Water washing tower outlet pressure control PIC-X0043 write manual mode output 0% lock

[0163] Close the synthesis gas venting cut-off valve XZV-X0043

[0164] After confirming that XZV-X0043 is closed

[0165] Open the gasifier extractor shut-off valve XZV-X0014A

[0166] After confirming that the gasifier extractor shut-off valve XZV-X0014A is open

[0167] Close the pressure relief cut-off valve XZV-X0036 between the water washing tower charging valves

[0168] After confirming that the pressure relief cut-off valve XZV-X0036 between the water washing tower charging valve is closed

[0169] Open the upstream cut-off valve XZV-X0034 of the medium-pressure nitrogen in the water scrubber

[0170] Open the downstream cut-off valve XZV-X0035 of the medium-pressure nitrogen in the water scrubber

[0171] The quenching chamber liquid level adjustment control LIC-X0011 selects LV-X0016 valve adjustment through HS-X0011 and sets it to 45% automatic.

[0172] Cooling - Step 8 Medium-pressure nitrogen as a standby for steam / oxygen channel air cooling

[0173] Automatic action in this state

[0174] Medium pressure nitrogen cooling

[0175] Open the medium pressure nitrogen upstream cut-off valve XZV-X0025

[0176] Central oxygen / steam regulating valve FCV-X0015 release open to 100%

[0177] Open the medium pressure nitrogen blow valve XZV-X0023 on the oxygen pipeline

[0178] Open the auxiliary burner medium pressure nitrogen cut-off valve XZV-X0042

[0179] Open the medium pressure nitrogen blow valve XZV-X0024 on the high pressure steam pipeline

[0180] Stop steam / oxygen channel air cooling

[0181] Close the main burner factory air upstream cut-off valve XZV-X0037

[0182] Close the main burner factory air downstream cut-off valve XZV-X0038

[0183] The main burner air flow controller FIC-X0051 writes 0% and locks the state

[0184] Close auxiliary burner factory air cut-off valve XZV-X0064 selection (XZ) status description

[0185]

[0186]

[0187] Note: 1. When the burner cooling protection interlock is triggered, the interlock action DCS controller action is executed

[0188]

[0189]

[0190]

[0191] Note: 1. Interlock action is executed when burner cooling protection interlock is triggered

[0192] 2. When the pressure purge mark is 0 (0 = required), or the gasifier extractor shut-off valve XZV-X0014A is not closed, PIC-X0043 is closed 0% and locked; when the pressure purge mark is 1 (1 = not required) and the gasifier extractor shut-off valve XZV-X0014A is closed, PIC-X0043 goes to manual mode at 0%.

[0193] Interlock protection in selected state

[0194] Chilled water flow protection:

[0195] When the gasifier temperature furnace temperature TI-X0032_37>LLL(300℃)

[0196] When the quenching water flow FI-X0050A / B / C < LLLL and the gasifier liquid level LI-X0011 ≯ HH, the emergency quenching water tank outlet shut-off valve XZV-X0021 opens

[0197] When the gasifier liquid level LI-X0011>HH, the emergency quenching water tank outlet cut-off valve XZV-X0021 is closed. Description of the drying furnace (HL) status

[0198] Oven-Step 1 Oven Preparation

[0199] Automatic action in this state

[0200] Close the upstream cut-off valve of the medium-pressure nitrogen in the water washing tower XZV-X0034

[0201] Close the downstream cut-off valve of the medium-pressure nitrogen in the water washing tower XZV-X0035

[0202] When XZV-X0034 / 35 is closed

[0203] Open the pressure relief cut-off valve XZV-X0036 between the water washing tower charging valves

[0204] When XZV-X0036 is in place

[0205] Close the gasifier extractor cut-off valve XZV-X0014A

[0206] Close the gasifier extractor secondary line cut-off valve XZV-X0014B

[0207] The manual output of the syngas remote control PIC-X0043 at the outlet of the water scrubber is 0%

[0208] Open the gasifier black water outlet shut-off valve XZV-X0031

[0209] Release the black water flow controller LV-X0016 at the gasifier outlet, and the gasifier liquid level control LIC-X0011 selects LV-X0016 to adjust the gasifier liquid level through HS-X0011.

[0210] 2UZ-X001 Feed oil feed pump protection interlock

[0211] When the lubricating oil pressure of the feed oil pump 31811-PZT-X0200A / B / C (2oo3) < LL (0.3MPa), the feed oil feed pump 31811-P-X001 stops

[0212] When the lubricating oil pressure of the feed oil pump 31811-PZT-X0200A / B / C (2oo3)>LL (0.3MPa), the feed oil feed pump 31811-P-X001 is allowed to start

[0213] UZ-0002 Oxygen main pipe nitrogen pressure equalization reflux protection interlock

[0214] When the pressure difference before and after the oxygen main nitrogen equalizing valve XZV-00019 (PI-10008 minus PI-00012) < L and (PI-10008-PI-00013) < L, the interlock closes XZV-00019

[0215] When the pressure difference before and after the oxygen main nitrogen equalizing valve XZV-00019 (PI-10008 minus PI-00012)>H or (PI-10008-PI-00013)>H, the reset interlock opens the XZV-00019UZ-X003 single series oxygen pipeline nitrogen equalizing pressure reflux protection interlock

[0216] When the pressure difference before and after the oxygen pipeline nitrogen equalizing valve XZV-X0019 (PI-X0008 minus PI-X0013) is less than L, the interlock closes XZV-X0019

[0217] When the pressure difference before and after the oxygen pipeline nitrogen equalizing valve XZV-X0019 (PI-X0008 minus PI-X0013)>H, reset the interlock to open XZV-X0019

[0218] UZ-X004 High-pressure steam pipeline nitrogen plug reflux protection interlock

[0219] When the high pressure nitrogen pressure PT-10008 is less than LL, the interlock is closed XZV-X0009

[0220] When the high-pressure nitrogen pressure PT-10008>L, the reset interlock opens the XZV-X0009UZ-X005 oxygen pipeline nitrogen plug reflux protection interlock

[0221] When the high pressure nitrogen pressure PI-X0008 is less than LL, the interlock is closed XZV-X0015

[0222] When the high-pressure nitrogen pressure PI-X0008>L & feeding is "false" & operation is "false", reset interlock opens XZV-X0015

[0223] UZ-X006 oxygen pipeline small flow nitrogen purge reflux protection interlock

[0224] When the high pressure nitrogen pressure PI-X0008 is less than LL, the interlock is closed XZV-X0016

[0225] When high pressure nitrogen pressure PI-X0008>L & feeding is "false" & operation is "false", reset interlock opens XZV-X0016

[0226] UZ-X007 medium and high pressure nitrogen reflux protection interlock

[0227] When the high-pressure nitrogen pressure PZT-X0008 < LL, the following valves are prohibited from opening

[0228] Main burner factory air nitrogen plug cut-off valve XZV-X0039

[0229] Burner refinery gas nitrogen plug cut-off valve XZV-X0053

[0230] UZ-X008 medium pressure nitrogen reflux protection interlock

[0231] When the pressure difference between the medium-pressure nitrogen and the outlet of the water scrubber (PZT-X0087 minus PI-X0043) is less than LL, the following valves are prohibited from opening:

[0232] Medium pressure nitrogen upstream cut-off valve XZV-X0025

[0233] Oxygen pipeline medium pressure nitrogen blowing valve XZV-X0023

[0234] High-pressure steam pipeline medium-pressure nitrogen blow valve XZV-X0024

[0235] Auxiliary burner medium pressure nitrogen cut-off valve XZV-X0042

[0236] Water washing tower medium pressure nitrogen upstream cut-off valve XZV-X0034

[0237] Water washing tower medium pressure nitrogen downstream cut-off valve XZV-X0035

[0238] UZ-X010 High-pressure steam temperature protection interlock

[0239] When the outlet temperature of the high-pressure steam desuperheater and pressure reducer TI-00010>HH OR<LL, then:

[0240] High-pressure steam desuperheater steam inlet cut-off valve 31812-XZV-00009 closed

[0241] Close the steam temperature regulating valve TV-00060 of the high pressure steam desuperheater and pressure reducer

[0242] Close the steam pressure regulating valve PV-00060 of the high pressure steam desuperheater and pressure reducer

[0243] When the outlet temperature of the high-pressure steam desuperheater and pressure reducer is TI-00010<HH AND>LL, the interlock is reset, then:

[0244] High-pressure steam desuperheater steam inlet cut-off valve 31812-XZV-00009 open

[0245] Steam temperature regulating valve TV-00060 for high pressure steam desuperheater and pressure reducer

[0246] The steam pressure regulating valve PV-00060 of the high-pressure steam desuperheater is powered

[0247] UZ-X011 oxygen valve pressure equalization protection interlock

[0248] If the pressure difference before and after the upstream cut-off valve XZV-00020 of the oxygen main pipe (PI-00011 minus PI-00012) is less than 0.3MPa and the nitrogen plug valve XZV-00019 of the oxygen main pipe is closed and the downstream cut-off valve XZV-00021 of the oxygen main pipe is opened, then valve XZV-00020 is allowed to open

[0249] If the pressure difference before and after the cut-off valve XZV-00021 downstream of the oxygen main pipe (PI-00012 minus PI-00013) is less than 0.3MPa and the nitrogen plug valve XZV-00019 of the oxygen main pipe is closed, the valve XZV-00021 is allowed to open

[0250] Pressure difference before and after oxygen preheater inlet oxygen cut-off valve XZV-X0020 (PI-00013 minus PI-X0013)

[0251] <0.3MPa and the oxygen pipeline nitrogen pressure equalizing valve XZV-X0019 is closed, then valve XZV-X0020 is allowed to open

[0252] UZ-X012 gasifier liquid level LL protection interlock

[0253] When the gasifier liquid level LI-X0011 is less than LL and "Maintenance-Step 1, selection status, feeding status, operation status, parking status is "true"", the gasifier black water outlet shut-off valve XZV-X0031 is interlocked and closed, and FIC10017 is manually locked and the output is 0%

[0254] When the gasifier liquid level LI-X0011>LL, the gasifier black water outlet shut-off valve XZV-X0031 is allowed to open, and FIC10017 is released to allow action

[0255] UZ-X013 cyclone separator position LL protection interlock

[0256] When the cyclone separator liquid level LI-X0014 < LL & "Maintenance-Step 1, selection status, feeding status, operation status, parking status is "true"", interlock and close the cyclone separator black water outlet shut-off valve XZV-X0032, and turn FIC10019 to manual lock output to 0%

[0257] When the cyclone separator liquid level LI-X0014>LL & the water washing tower outlet pressure PI-X0043>LL, it is allowed to open the cyclone separator black water outlet shut-off valve XZV-X0032, release FIC10019 to allow the action of the UZ-X014 water washing tower liquid level LL protection interlock

[0258] When the water washing tower liquid level LI-X0043 < LL & "Maintenance-Step 1, selection status, feeding status, operation status, parking status is "true"", interlock and close the water washing tower black water outlet shut-off valve XZV-X0033, and manually lock FIC10048 to 0% output

[0259] When the water washing tower liquid level LI-X0043>LL & the water washing tower outlet pressure PI-X0043>LL, it is allowed to open the water washing tower black water outlet shut-off valve XZV-X0033, release FIC10048 to allow action

[0260] UZ-X015 emergency chilled water tank protection interlock

[0261] When the liquid level of the emergency quenching water tank LI-X0017 is less than LL or when the pressure difference between the emergency quenching water tank and the gasifier is less than LL, the emergency quenching water tank outlet cut-off valve XZV-X0021 is interlocked and closed.

[0262] When the liquid level of the emergency quenching water tank LI-X0017>LL and the pressure difference between the emergency quenching water tank and the gasifier>L, release the emergency quenching water tank outlet cut-off valve XZV-X0021

[0263] UZ-X016 burner cooling water protection interlock

[0264] When the burner cooling water pump outlet main pipe flow FI-00026 < LLL, open the burner cooling water return water to the first-level high-temperature hot water tank shut-off valve XZV-00023

[0265] When the burner cooling water pump outlet main pipe flow FI-00026>LL & burner cooling water return cut-off valve XZV-00022 is opened, close the burner cooling water return to the first-level high-temperature hot water tank cut-off valve XZV-00023. When the burner cooling water return cut-off valve XZV-00022 is closed, open the burner cooling water return to the first-level high-temperature hot water tank cut-off valve XZV-00023.

[0266] UZ-X018 burner leakage protection interlock

[0267] When the burner cooling water inlet and outlet flow difference FDI-X0020>HH & the burner cooling water tank liquid level LI-00016A / B<LL, or the burner cooling water emergency stop button on the auxiliary console is pressed:

[0268] Close the burner cooling water inlet valve XZV-X0017

[0269] Close the burner cooling water outlet valve XZV-X0018

[0270] UZ-X019 system pressure relief protection interlock

[0271] (When PIC-X0043 MV>3%or PI-X0043>H)&When the airtight state is "false", open XZV-X0043, PIC-X0043 set SV=6.8 and automatically

[0272] Finally, it should be noted that the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the content disclosed by ordinary technicians in this field should be considered as the protection scope of the present invention.

Claims

1. A highly intelligent and highly automated process logic conversion control method, including an oxygen supply system, a coal slurry supply system, a gasification cooling system, a gasifier liquid level control system, a burner cooling water system, and a low-pressure ammonia blowing system, characterized in that: Including the use of SIS interlocking protection between systems and valve testing; The SIS interlock protection includes: UZ-X001 feed oil feed pump protection interlock: When the lubricating oil pressure of the feed oil pump is less than LL, the feed oil feed pump 31811-P1001 stops; when the lubricating oil pressure of the feed oil pump is greater than LL, the feed oil feed pump 31811-P1001 is allowed to start; UZ-0002 oxygen main nitrogen pressure equalization reflux protection interlock: When the pressure difference before and after the oxygen main pipe nitrogen equalizing pressure valve XZV10019 is less than L, the interlock closes the oxygen main pipe nitrogen equalizing pressure valve XZV10019; when the pressure difference before and after the oxygen main pipe nitrogen equalizing pressure valve XZV10019 is greater than H, the reset interlock opens the oxygen main pipe nitrogen equalizing pressure valve XZV10019; UZ-X003 single series oxygen pipeline nitrogen equalizing pressure reflux protection interlock: when the pressure difference before and after the oxygen main pipe nitrogen equalizing pressure valve XZV10019 is less than L, the interlock closes the oxygen main pipe nitrogen equalizing pressure valve XZV10019; when the pressure difference before and after the oxygen main pipe nitrogen equalizing pressure valve XZV10019 is greater than H, the reset interlock opens the oxygen main pipe nitrogen equalizing pressure valve XZV10019; UZ-X004 high-pressure steam pipeline nitrogen plug reflux protection interlock: when the high-pressure nitrogen pressure is less than LL, the interlock closes the high-pressure steam pipeline nitrogen equalizing valve XZV10009; when the high-pressure nitrogen pressure is greater than L, the reset interlock opens the high-pressure steam pipeline nitrogen XZV10009; UZ-X007 medium and high pressure nitrogen reflux protection interlock: When the medium and high pressure nitrogen pressure is less than LL, the following valves are prohibited from opening: main burner factory air nitrogen plug cut-off valve XZV10039; burner refinery gas nitrogen plug cut-off valve XZV10053; UZ-X008 medium-pressure nitrogen reflux protection interlock: When the pressure difference between the medium-pressure nitrogen and the water scrubber outlet is less than LL, the following valves are prohibited from opening: medium-pressure nitrogen upstream cut-off valve XZV10025; oxygen pipeline medium-pressure nitrogen blow-off valve XZV10023; high-pressure steam pipeline medium-pressure nitrogen blow-off valve XZV10024; auxiliary burner medium-pressure nitrogen cut-off valve XZV10042; water scrubber medium-pressure nitrogen upstream cut-off valve XZV10034; water scrubber medium-pressure nitrogen downstream cut-off valve XZV10035; UZ-X011 oxygen valve equalizing pressure protection interlock: if the pressure difference before and after the upstream cut-off valve XZV10020 of the oxygen main pipe is less than 0.3MPa, the nitrogen plug valve XZV10019 of the oxygen main pipe is closed, and the downstream cut-off valve XZV10021 of the oxygen main pipe is opened, the valve XZV-00020 is allowed to be opened; if the pressure difference before and after the downstream cut-off valve XZV-00021 of the oxygen main pipe is less than 0.3MPa, and the nitrogen plug valve XZV10019 of the oxygen main pipe is closed, the valve XZV10021 is allowed to be opened; if the pressure difference before and after the oxygen cut-off valve XZV10020 of the oxygen preheater inlet is less than 0.3MPa, and the nitrogen equalizing pressure valve XZV10019 of the oxygen pipeline is closed, the valve XZV10020 is allowed to be opened; UZ-X015 accident chilled water tank protection interlock: when the liquid level of the accident chilled water tank is less than LL or when the pressure difference between the accident chilled water tank and the gasifier is less than LL, the interlock closes the accident chilled water tank outlet cut-off valve XZV10021; when the liquid level of the accident chilled water tank is greater than LL and when the pressure difference between the accident chilled water tank and the gasifier is greater than L, the accident chilled water tank outlet cut-off valve XZV10021 is released.

2. According to claim 1, a highly intelligent and highly automated process logic conversion control method is characterized in that: The valve tests include: oxygen valve group test, medium-pressure nitrogen valve group test, high-pressure steam valve group test, similar valve group test, single valve test, oil channel valve test, extraction and venting main channel valve test, water washing tower medium-pressure nitrogen valve group test; the valve stroke test flag is true, true = 1, and the valve stroke test flag is false, false = 0; If the valve test timer is greater than the valve setting switch time and the valve stroke test flag is true, the valve test fails and an alarm is triggered; if the valve test timer is less than the valve setting switch time and the valve stroke test flag is true, the relevant valve test passes and SOE records the time; Oxygen valve group test test: The valve actions are as follows: open XZV10011, start the XZV10011 opening timer, and when it is confirmed that XZV10011 is open: close XZV10011, stop the XZV10011 opening timer, and start the XZV10011 closing timer; When it is confirmed that XZV10011 is closed: open XZV10012, start the XZV10012 opening timer, and stop the XZV10011 closing timer; when it is confirmed that XZV10012 is open: close XZV10012, start the XZV10012 closing timer, and stop the XZV10012 opening timer; when it is confirmed that XZV10012 is closed: open XZV10015, start the XZV10015 opening timer, and stop the XZV10012 closing timer; when it is confirmed that XZV10015 is open: close XZV10015, start the XZV10015 closing timer, and stop the XZV10015 opening timer; when it is confirmed that XZV10015 is closed: stop the XZV10015 closing timer; Medium-pressure nitrogen valve group test test: The valve actions are as follows: start the XZV10023 opening timer, open XZV10023, when it is confirmed that XZV10023 is open: close XZV10023, start the XZV10023 closing timer, stop the XZV10023 opening timer; when it is confirmed that XZV10023 is closed, open XZV10024, start the XZV10024 opening timer, stop the XZV10023 closing timer; when it is confirmed that XZV10024 is open: close XZV10024, start the XZV10024 closing timer, stop the XZV10024 opening timer; when it is confirmed that XZV10024 is closed: open XZV10024 042, start the opening timer of XZV10042, stop the closing timer of XZV10024; when it is confirmed that XZV10042 is open: close XZV10042, start the closing timer of XZV10042, stop the opening timer of XZV10042; when it is confirmed that XZV10042 is closed: open XZV10025, start the opening timer of XZV10025, stop the closing timer of XZV10042; when it is confirmed that XZV10025 is open: close XZV10025, start the closing timer of XZV10025, stop the opening timer of XZV10025; when it is confirmed that XZV10025 is closed: stop the closing timer of XZV10025; High pressure steam valve test: The valve actions are as follows: start the opening timer of XZV10007, open XZV10007, when it is confirmed that XZV10007 is open: close XZV10007, start the closing timer of XZV10007, stop the opening timer of XZV10007; when it is confirmed that XZV10007 is closed: open XZV10009, start the opening timer of XZV10009, stop the closing timer of XZV10007; when it is confirmed that XZV10009 is open: close XZV10009, start the closing timer of XZV10009, stop the opening timer of XZV10009; when it is confirmed that XZV10009 is closed: open XZV10006, start Start the opening timer of XZV10006 and stop the closing timer of XZV10009; when it is confirmed that XZV10006 is open: close XZV10006, start the closing timer of XZV10006, and stop the opening timer of XZV10006; when it is confirmed that XZV10006 is closed: open XZV10008, start the opening timer of XZV10008, and stop the closing timer of XZV10006; when it is confirmed that XZV10008 is open: close XZV10008, start the closing timer of XZV10008, and stop the opening timer of XZV10008; when it is confirmed that XZV10008 is closed: stop the closing timer of XZV10008; Similar valve group test: The valve actions are as follows: start the opening timer of XZV10001, open XZV10001, when it is confirmed that XZV10001 is open: close XZV10001, start the closing timer of XZV10001, stop the opening timer of XZV10001, when it is confirmed that XZV10001 is closed: open XZV10002, start the opening timer of XZV10002, stop the closing timer of XZV10001; when it is confirmed that XZV10002 is open: close XZV10002, start Start the closing timer of XZV10002, stop the opening timer of XZV10002, when it is confirmed that XZV10002 is closed: open XZV10003, start the opening timer of XZV10003, stop the closing timer of XZV10002; when it is confirmed that XZV10003 is open: close XZV10003, start the closing timer of XZV10003, stop the opening timer of XZV10003; when it is confirmed that XZV10003 is closed: stop the closing timer of XZV10003; Single valve test: The valve actions are as follows: open XZV10001, start the XZV10001 opening timer, when it is confirmed that XZV10001 is open: close XZV10001, start the XZV10001 closing timer, stop the XZV10001 opening timer; when it is confirmed that XZV10001 is closed: stop the XZV10001 closing timer; Oil channel valve test: The valve actions are as follows: open XZV10001, start the XZV10001 opening timer, when it is confirmed that XZV10001 is open: close XZV10001, start the XZV10001 closing timer, and stop the XZV10001 opening timer; when it is confirmed that XZV10001 is closed: open XZV10002, start the XZV10002 opening timer, and stop the XZV10001 closing timer; when it is confirmed that XZV10002 is open: close XZV10002, start the XZV10002 closing timer, and stop the XZV10002 opening timer; when it is confirmed that XZV10002 is closed: open XZV10003, start Start the opening timer of XZV10003 and stop the closing timer of XZV10002; when it is confirmed that XZV10003 is open: close XZV10003, start the closing timer of XZV10003, and stop the opening timer of XZV10003; when it is confirmed that XZV10003 is closed: open XZV10004, start the opening timer of XZV10004, and stop the closing timer of XZV10003; when it is confirmed that XZV10004 is open: close XZV10004, start the closing timer of XZV10004, and stop the opening timer of XZV10004; when it is confirmed that XZV10004 is closed: stop the closing timer of XZV10004; Pumping and venting main channel valve test: The valve actions are as follows: close XZV100014A, start the XZV100014A closing timer, when it is confirmed that XZV100014A is closed: open XZV100014A, start the XZV100014A opening timer, stop the XZV100014A closing timer; when it is confirmed that XZV100014A is open, stop the XZV100014A opening timer; Water scrubber medium pressure nitrogen valve group test: The valve actions are as follows: close XZV100036, start the XZV100036 closing timer, when it is confirmed that XZV100036 is closed: open XZV10035, start the XZV10035 opening timer, stop the XZV10036 closing timer; when it is confirmed that XZV10035 is open: close XZV10035, start the XZV10035 closing timer, stop the XZV10035 opening timer; when it is confirmed that XZV10035 is closed: Open XZV10034, start the XZV10034 opening timer, and stop the XZV10035 closing timer; when it is confirmed that XZV10034 is opened: close XZV10034, start the XZV10034 closing timer, and stop the XZV10034 opening timer; when it is confirmed that XZV10034 is closed: open XZV10036, start the XZV10036 opening timer, and stop the XZV10034 closing timer; when it is confirmed that XZV10036 is opened: stop the XZV10036 opening timer.

3. A highly intelligent and automated process logic conversion control method according to claim 2, characterized in that: Including maintenance state conversion, airtight state conversion, cooling state conversion, selection state conversion, furnace state conversion, feeding state conversion, system operation state conversion, furnace stop state conversion, burner protection state conversion, feed oil pump state conversion; Maintenance status transition: including maintenance-step 1 maintenance preparation; maintenance-step 2 system maintenance; maintenance-step 3 maintenance confirmation; maintenance-step 4 maintenance completion; Maintenance - Step 2 System maintenance includes: XZV10043 Syngas Venting Shut-off Valve Closed HCV10043 water scrubber outlet synthesis gas remote control shutdown PZT10043 water washing tower outlet pressure < LLL 0.05MPa Gasifier furnace temperature: furnace temperature <LLL300℃.

4. A highly intelligent and automated process logic conversion control method according to claim 2, characterized in that: Airtight state conversion: includes airtight-step 1 airtight preparation; airtight-step 2 system pressure increase; airtight-step 3 system low pressure maintenance; airtight-step 4 system pressure increase; airtight-step 5 system high pressure maintenance; airtight-step 6 system pressure reduction; airtight-step 7 airtight completion; airtight-step 7 airtight completion includes: PZT10043 water washing tower outlet pressure <LLL (0.05MPa).

5. The highly intelligent and automated process logic conversion control method according to claim 2 is characterized in that: Cooling state conversion: including cooling-step 1 cooling preparation; cooling-step 2 medium-pressure nitrogen cooling; cooling-step 3 stopping medium-pressure nitrogen cooling; cooling-step 4 steam / oxygen channel air cooling preparation; cooling-step 5 steam / oxygen channel air cooling; cooling-step 6 stopping cooling; cooling-step 7 cooling completion; cooling-step 8 medium-pressure nitrogen as a standby for steam / oxygen channel air cooling; Cooling - Step 5 Steam / Oxygen Channel Air Cooling includes: HCV10043 water scrubber outlet synthesis gas remote control shutdown XZV10043 Syngas Venting Shut-off Valve Closed XZV10014A gasifier extractor cut-off valve is open Cooling-Step 7 Cooling is completed including: XZV10023 oxygen pipeline medium pressure nitrogen blowing valve closed XZV10042 auxiliary burner medium pressure nitrogen cut-off valve closed XZV10024 High-pressure steam pipeline medium-pressure nitrogen blowing valve closed XZV10034 water scrubber medium pressure nitrogen upstream cut-off valve closed XZV10035 water scrubber medium pressure nitrogen downstream cut-off valve closed XZV10036 water washing tower pressure relief cut-off valve is open XZV10025 medium pressure nitrogen upstream cut-off valve closed XZV-X0037 Main Burner Factory Air Upstream Shut-off Valve Closed XZV-X0038 Main burner factory air downstream cut-off valve closed The XZV-X0014A gasifier extractor shut-off valve is closed.

6. A highly intelligent and automated process logic conversion control method according to claim 2, characterized in that: Select state transitions include: XZV10001 Feed oil cut-off valve closed XZV10002 oil channel purge downstream valve closed XZV10004 feed oil pipeline high pressure steam purge valve closed XZV10011 oxygen upstream cut-off valve closed XZV10012 oxygen downstream cut-off valve closed FCV-X0010 oxygen channel steam regulating valve closed FCV10006 main steam regulating valve closed XZV10006 High-pressure steam upstream cut-off valve closed XZV10007 High-pressure steam downstream cut-off valve closed XZV10041 auxiliary burner steam cut-off valve closed XZV10016 oxygen small flow nitrogen purge valve closed XZV10025 medium pressure nitrogen upstream cut-off valve closed The medium-pressure nitrogen blow valve in the XZV10023 oxygen pipeline is closed.

7. A highly intelligent and automated process logic conversion control method according to claim 2, characterized in that: Baking furnace state conversion: including Baking furnace-step 1 Baking furnace preparation; Baking furnace-step 2 Purge replacement; Baking furnace-step 3 Ignition preparation; Baking furnace-step 4 Auxiliary combustion ignition; Baking furnace-step 5 Start main combustion; Baking furnace-step 6 Final heating; Baking furnace-step 7 Feeding preparation; Oven-Step 2 Purge Replacement includes: XZV10023 oxygen pipeline medium pressure nitrogen blowing valve closed XZV10024 High-pressure steam pipeline medium-pressure nitrogen blowing valve closed XZV10025 single series medium pressure nitrogen upstream cut-off valve closed XZV10034 water scrubber medium pressure nitrogen upstream cut-off valve closed XZV10035 water scrubber medium pressure nitrogen downstream cut-off valve closed XZV10036 water washing tower pressure relief cut-off valve is open XZV10041 auxiliary burner steam cut-off valve closed XZV10042 auxiliary burner medium pressure nitrogen cut-off valve closed XZV10064 auxiliary burner factory air cut-off valve closed XZV10065 auxiliary burner refinery gas upstream cut-off valve closed XZV10066 auxiliary burner refinery gas downstream cut-off valve closed XZV10051 main burner refinery gas upstream cut-off valve closed XZV10052 main burner refinery gas downstream cut-off valve closed XZV10037 main burner factory air upstream cut-off valve closed XZV10038 main burner factory air downstream cut-off valve closed Baking furnace - step 4 auxiliary ignition includes: XZV10023 oxygen pipeline medium pressure nitrogen blowing valve closed XZV10024 High-pressure steam pipeline medium-pressure nitrogen blowing valve closed XZV10025 single series medium pressure nitrogen upstream cut-off valve closed XZV10034 water scrubber medium pressure nitrogen upstream cut-off valve is open XZV10035 water scrubber medium pressure nitrogen downstream cut-off valve is open XZV10036 water washing tower pressure relief cut-off valve is closed XZV-X0041 auxiliary burner steam cut-off valve closed XZV10042 auxiliary burner medium pressure nitrogen cut-off valve closed XZV10051 main burner refinery gas upstream cut-off valve closed XZV10052 main burner refinery gas downstream cut-off valve closed The XZV10014A gasifier extractor shut-off valve is open.

8. The highly intelligent and automated process logic conversion control method according to claim 2 is characterized in that: Feeding state conversion: including feeding-step 1: shut down and start extraction; feeding-step 2: establish gasifier pressure; feeding-step 3: establish steam flow; feeding-step 4: start feeding; feeding-step 5: confirm feeding; feeding-step 6: establish oxygen flow; Feeding - Step 7 System Pressure Boosting Feeding - Step 2 Establishing the Gasifier Pressure includes: XZV10001 Feed oil cut-off valve closed XZV10002 oil channel purge downstream valve closed XZV10003 oil circulation valve open XZV10004 feed oil pipeline high pressure steam purge valve closed XZV10006 High-pressure steam upstream cut-off valve closed XZV10007 High-pressure steam downstream cut-off valve closed XZV10008 high pressure steam venting cut-off valve is open XZV10011 oxygen upstream cut-off valve closed XZV10012 oxygen downstream cut-off valve closed XZV10013 oxygen venting shut-off valve is open XZV10014A gasifier extractor cut-off valve closed The XZV10014B gasifier extractor bypass line shut-off valve is closed.

9. The highly intelligent and automated process logic conversion control method according to claim 2, characterized in that: Interlock protection in the operating state during system operating state transition: Chilling water flow protection interlock: When the gasifier temperature furnace temperature TI-X0032_37>LLL 300℃; When the quenching water flow rate is less than LLLL and the gasifier liquid level is greater than or equal to HH, the emergency quenching water tank outlet shut-off valve XZV10021 is opened; when the gasifier liquid level is LI-X0011>HH, the emergency quenching water tank outlet shut-off valve XZV10021 is closed.

10. A highly intelligent and automated process logic conversion control method according to claim 2, characterized in that: Stop the drying furnace state conversion: including stop the drying furnace - step 1 to isolate the fuel gas; stop the drying furnace - step 2 to isolate the factory air; stop the drying furnace - step 3 to purge the system; stop the drying furnace - step 4 to complete the purge; stop the drying furnace - step 5 to select the burner state; stop the drying furnace - step 6 to complete the drying furnace stop; Stop the oven - step 7 purge failed; Stop the oven - Step 3 System purge includes: XZV-X0037 Main Burner Factory Air Upstream Shut-off Valve Closed The factory air downstream shut-off valve of the XZV-X0038 main burner is closed. The factory air shut-off valve of the XZV-X0064 auxiliary burner is closed.

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