CN112852495A - Feeding control method for coal slurry, hydrocarbon gas and oxygen - Google Patents
Feeding control method for coal slurry, hydrocarbon gas and oxygen Download PDFInfo
- Publication number
- CN112852495A CN112852495A CN202011592709.7A CN202011592709A CN112852495A CN 112852495 A CN112852495 A CN 112852495A CN 202011592709 A CN202011592709 A CN 202011592709A CN 112852495 A CN112852495 A CN 112852495A
- Authority
- CN
- China
- Prior art keywords
- flow
- oxygen
- coal slurry
- hydrocarbon gas
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/723—Controlling or regulating the gasification process
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
- C10J2300/0933—Coal fines for producing water gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0973—Water
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0983—Additives
Abstract
The invention discloses a feeding control system and a method of coal slurry, hydrocarbon gas and oxygen, wherein the system comprises a single mixing atomizer and a control module, the control module comprises a hydrocarbon gas control module, a coal slurry control module and an oxygen control module, the hydrocarbon gas control module comprises a hydrocarbon gas flow transmitter and a hydrocarbon gas flow regulating valve, the coal slurry control module comprises a high-pressure coal slurry pump and a coal slurry flow transmitter, and the oxygen control module comprises an oxygen flow transmitter, an oxygen flow regulating valve, a central oxygen flow transmitter and a central oxygen flow regulating valve; the method comprises the following steps: firstly, acquiring and transmitting detection data; secondly, processing data of a hydrocarbon gas channel, a coal slurry channel and an oxygen channel; and thirdly, controlling data of a hydrocarbon gas channel, a coal slurry channel and an oxygen channel. The invention stably controls the proportion of the coal slurry, the hydrocarbon gas and the oxygen which enter the gasification reactor through the single-mixing atomizer, and ensures the safety and reliability of the control process.
Description
Technical Field
The invention belongs to the technical field of gasification of hydrocarbon materials, and particularly relates to a feeding control method of coal slurry, hydrocarbon gas and oxygen.
Background
The synthesis gas is a chemical raw material gas taking carbon monoxide and hydrogen as main components, and can be used for producing basic organic chemical products and fine chemicals, combining cyclic power generation, and the technical field of coal-based poly-generation and the like.
The coal and hydrocarbon gas co-gasification technology is a gasification technology for converting coal slurry made of coal and hydrocarbon gas into clean synthetic gas. The co-gasification technology of coal and hydrocarbon gas can be divided into a single-mixing atomizer co-gasification technology and a multi-mixing atomizer co-gasification technology according to different modes of raw materials entering a gasification reactor. The two coal and hydrocarbon gas co-gasification technologies are characterized in that coal is ground into coal powder, the coal powder is made into coal slurry meeting the gasification technical requirements, then the coal slurry, the hydrocarbon gas and a gasification agent are fed into a gasification reactor, and the coal slurry, the hydrocarbon gas and the gasification agent are subjected to chemical reaction under the action of certain temperature and pressure to generate synthesis gas. The main difference between these two coal and hydrocarbon gas co-gasification technologies is the different way in which the feedstock enters the gasification reactor. In the multi-mixing atomizer co-gasification technology, coal slurry and hydrocarbon gas respectively enter a gasification reactor through different mixing atomizers, while in the single-mixing atomizer co-gasification technology, the coal slurry and the hydrocarbon gas only enter the gasification reactor through the same mixing atomizer. In the multi-mixing atomizer co-gasification technology, at least three mixing atomizers are required, namely one coal slurry mixing atomizer and two hydrocarbon gas mixing atomizers or one hydrocarbon gas mixing atomizer and two coal slurry mixing atomizers. In order to ensure the safety of the gasification reactor and the quality of the synthesis gas, in the multi-mixing atomizer co-gasification technology, at least two sets of control systems are needed, and the two sets of control systems are respectively used for controlling the proportion of the coal slurry and the oxygen entering the gasification reactor through the coal slurry mixing atomizer and the proportion of the hydrocarbon gas and the oxygen entering the gasification reactor through the hydrocarbon gas mixing atomizer. In order to improve the control quality, three sets of control systems are even needed, namely one set of control system for the mixing atomizer, and the auxiliary protection control system for each mixing atomizer, such as the cooling water protection control system for each mixing atomizer, is not included. Even if the investment costs of a plurality of mixing atomizers and the complexity of the control system are not considered in the multi-mixing atomizer co-gasification technology, the investment cost of the feed control system of the multi-mixing atomizer co-gasification technology is much higher than that of the feed control system of the single-mixing atomizer co-gasification technology.
In addition, the ratio of the coal slurry, the hydrocarbon gas and the oxygen in the gasification reactor determines the severity of the gasification reaction, the quality of the syngas produced and the safety of the gasification reactor. In order to reduce the comprehensive investment cost of the coal slurry and hydrocarbon gas co-gasification technology in the aspect of industrial application, reduce the complexity of a feeding control system, improve the control precision and reliability of the feeding control system and improve the utilization rate of gasification materials, a stable and reliable feeding control system and method for coal slurry, hydrocarbon gas and oxygen are needed to be invented at present, the proportion of the coal slurry, the hydrocarbon gas and the oxygen entering a gasification reactor through a single mixing atomizer can be stably controlled, and the safety and reliability of the control process are also guaranteed.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method for controlling the feeding of coal slurry, hydrocarbon gas and oxygen, which has the advantages of simple steps, reasonable design, convenient implementation and good use effect, and not only can stably control the ratio of coal slurry, hydrocarbon gas and oxygen entering a gasification reactor through a single mixing atomizer, but also can ensure the safety and reliability of the control process.
In order to solve the technical problems, the invention adopts the technical scheme that: a coal slurry, hydrocarbon gas and oxygen feeding control system is characterized in that: the single-mixing atomizer is provided with a hydrocarbon gas channel, a coal slurry channel, a central oxygen channel and an outer ring oxygen channel, wherein the hydrocarbon gas channel is connected with a hydrocarbon gas pipeline, the coal slurry channel is connected with a coal slurry pipeline, the central oxygen channel is connected with the central oxygen pipeline, the outer ring oxygen channel is connected with an outer ring oxygen pipeline, and the central oxygen pipeline and the outer ring oxygen pipeline are connected with the oxygen pipeline;
the control module comprises a hydrocarbon gas control module, a coal slurry control module and an oxygen control module, wherein the hydrocarbon gas control module comprises a first hydrocarbon gas flow transmitter, a second hydrocarbon gas flow transmitter and a hydrocarbon gas flow regulating valve which are sequentially arranged on a hydrocarbon gas pipeline;
the coal slurry control module comprises a high-pressure coal slurry pump, a first coal slurry flow transmitter and a second coal slurry flow transmitter which are sequentially arranged on the coal slurry pipeline;
the oxygen control module comprises a first oxygen flow transmitter, a second oxygen flow transmitter and an oxygen flow regulating valve which are sequentially arranged on the oxygen pipeline, and a central oxygen flow transmitter and a central oxygen flow regulating valve which are sequentially arranged on the central oxygen pipeline.
The above-mentioned feed control system of coal slurry, hydrocarbon gas and oxygen, its characterized in that: the hydrocarbon gas pipeline is provided with a hydrocarbon gas check valve which is positioned between the hydrocarbon gas flow regulating valve and the hydrocarbon gas channel;
a coal slurry check valve is arranged on the coal slurry pipeline and is positioned between the second coal slurry flow transmitter and the coal slurry channel;
the central oxygen pipeline is provided with a central oxygen check valve, and the central oxygen check valve is positioned between the central oxygen flow regulating valve and the central oxygen channel.
The above-mentioned feed control system of coal slurry, hydrocarbon gas and oxygen, its characterized in that: and an oxygen check valve is arranged on the outer ring oxygen pipeline.
Meanwhile, the invention also discloses a coal slurry, hydrocarbon gas and oxygen feeding control method which has the advantages of simple method steps, reasonable design, convenient realization and good use effect, and is characterized by comprising the following steps:
step one, acquisition and transmission of detection data:
101, in the process that hydrocarbon gas enters a gasification reactor from a single mixing atomizer through a hydrocarbon gas pipeline, a first hydrocarbon gas flow transmitter and a second hydrocarbon gas flow transmitter detect the flow of the hydrocarbon gas and send the detected first hydrocarbon gas flow and second hydrocarbon gas flow to a data processor;
102, in the process that coal slurry enters a gasification reactor from a single mixing atomizer through a coal slurry pipeline, a first coal slurry flow transmitter and a second coal slurry flow transmitter detect the flow of the coal slurry and send the detected first coal slurry flow and second coal slurry flow to a data processor;
103, in the process that oxygen enters a gasification reactor from a single mixing atomizer through an oxygen pipeline, a first oxygen flow transmitter and a second oxygen flow transmitter detect the oxygen flow and send the detected first oxygen flow and second oxygen flow to a data processor;
104, detecting oxygen by a central oxygen flow transmitter and transmitting a detected central oxygen flow measurement value to a data processor in the process that the oxygen enters a gasification reactor from a single mixing atomizer through a central oxygen pipeline;
step two, processing data of a hydrocarbon gas channel, a coal slurry channel and an oxygen channel:
the data processor calls a first multiplier to multiply the hydrocarbon gas flow average value and the hydrocarbon gas concentration set value in the hydrocarbon gas concentration setter to obtain a hydrocarbon gas flow measured value;
the data processor calls a second multiplier to multiply the average value of the oxygen flow and the set value of the oxygen concentration in the oxygen concentration setter to obtain a measured value of the oxygen flow;
step three, controlling data of a hydrocarbon gas channel, a coal slurry channel and an oxygen channel:
301, the data processor calls a difference value comparator to perform difference value comparison on the received hydrocarbon gas flow measurement value and the hydrocarbon gas flow set value to obtain a hydrocarbon gas flow deviation value, the data processor processes the hydrocarbon gas flow deviation value by using a hydrocarbon gas flow regulator to obtain the opening degree of a hydrocarbon gas flow regulating valve, and the flow of the hydrocarbon gas passing through a hydrocarbon gas pipeline is regulated until the hydrocarbon gas flow measurement value is maintained at the hydrocarbon gas flow set value;
and step 304, the data processor calls a difference value comparator to compare the received central oxygen flow measurement value with a central oxygen flow set value in the central oxygen flow setter to obtain a central oxygen flow deviation value, the data processor processes the central oxygen flow deviation value by using the central oxygen flow adjuster to obtain the opening of the central oxygen flow adjusting valve, and the flow of oxygen passing through the central oxygen pipeline is adjusted until the central oxygen flow measurement value is maintained at the central oxygen flow set value.
The feeding control method of the coal slurry, the hydrocarbon gas and the oxygen is characterized in that: in step 301, the data processor processes the deviation value of the hydrocarbon gas flow by using the hydrocarbon gas flow regulator to obtain the opening of the hydrocarbon gas flow regulating valve, and regulates the flow of the hydrocarbon gas passing through the hydrocarbon gas pipeline until the measured value of the hydrocarbon gas flow is maintained at the set value of the hydrocarbon gas flow, which comprises the following specific processes:
the data processor utilizes the hydrocarbon gas flow regulator to process the hydrocarbon gas flow deviation value to obtain a first electric signal, the first electric signal is input into the first electric valve positioner, the first electric valve positioner converts the first electric signal into a first standard air pressure signal, and the first standard air pressure signal controls the opening of the hydrocarbon gas flow regulating valve until the measured value of the hydrocarbon gas flow is maintained at a hydrocarbon gas flow set value;
in step 302, the data processor processes the coal slurry flow deviation value by using the coal slurry flow regulator, and regulates the flow of the coal slurry passing through the coal slurry pipeline until the measured coal slurry flow value is maintained at the set coal slurry flow value, which comprises the following specific processes:
the data processor utilizes the coal slurry flow regulator to process the coal slurry flow deviation value to obtain a motor rotating speed control signal for controlling a motor of the high-pressure coal slurry pump, adjusts the rotating speed of the motor through a motor speed regulator according to the motor rotating speed control signal, and drives the high-pressure coal slurry pump to operate by adjusting the rotating speed of the motor until the coal slurry flow measured value is maintained at the coal slurry flow set value.
The feeding control method of the coal slurry, the hydrocarbon gas and the oxygen is characterized in that: in step 303, the data processor processes the oxygen flow deviation value by using the oxygen flow regulator to obtain the opening of the oxygen flow regulating valve, and regulates the flow of oxygen passing through the oxygen pipeline until the oxygen flow measurement value is maintained at the oxygen flow set value, which comprises the following specific processes:
the data processor utilizes the oxygen flow regulator to process the oxygen flow deviation value to obtain a second electric signal, the second electric signal is input into a second electric valve positioner, the second electric valve positioner converts the second electric signal into a second standard air pressure signal, and the second standard air pressure signal controls the opening degree of the oxygen flow regulating valve until the measured value of the oxygen flow is maintained at the set value of the oxygen flow.
In step 304, the data processor processes the central oxygen flow deviation value by using the central oxygen flow regulator to obtain the opening of the central oxygen flow regulating valve, and regulates the flow of oxygen passing through the central oxygen pipeline until the measured value of the central oxygen flow is maintained at the set value of the central oxygen flow, which comprises the following specific processes:
and the data processor processes the central oxygen flow deviation value by using the central oxygen flow regulator to obtain a third electric signal, the third electric signal is input into a third electric valve positioner, the third electric valve positioner converts the third electric signal into a third standard air pressure signal, and the third standard air pressure signal controls the opening of the central oxygen flow regulating valve until the measured value of the central oxygen flow is maintained at the set value of the central oxygen flow.
The feeding control method of the coal slurry, the hydrocarbon gas and the oxygen is characterized in that: the process for obtaining the hydrocarbon gas flow set value, the coal slurry flow set value, the oxygen flow set value and the central oxygen flow set value is as follows:
step A, setting a coal slurry flow load value through a load setter, presetting the flow ratio of coal slurry, natural gas and oxygen through a data processor, and acquiring a set value of the ratio of oxygen flow to coal slurry flow and a set value of the ratio of hydrocarbon gas flow to coal slurry flow according to the preset flow ratio of coal slurry, natural gas and oxygen;
step B, in the process of conveying hydrocarbon gas, coal slurry flow and oxygen, the data processor performs division processing on the measured value of the oxygen flow and the set value of the ratio of the oxygen flow to the coal slurry flow in the step 203 by using a divider to obtain a calculated value of the coal slurry flow;
the data processor selects a high value in the coal slurry flow load value and the coal slurry flow calculation value as a coal slurry flow set value by using the high value selector;
c, selecting a low value in the coal slurry flow load value and the coal slurry flow measured value in the step 202 as a coal slurry flow low calculated value by the data processor by using a low value selector;
the data processor multiplies the coal slurry flow low calculated value and the oxygen flow and coal slurry flow ratio set value by using a third multiplier to obtain an oxygen flow set value; wherein, the central oxygen flow set value in the central oxygen flow setter is 10-20% of the oxygen flow set value;
and step D, the data processor multiplies the coal slurry flow measurement value by the hydrocarbon gas flow and coal slurry flow ratio set value by using a fourth multiplier to obtain the hydrocarbon gas flow set value.
Compared with the prior art, the invention has the following advantages:
1. the method has simple steps and reasonable design, improves the stability of the proportion of the coal slurry, the hydrocarbon gas and the oxygen passing through the single-mixing atomizer, and improves the uniformity of atomization, thereby improving the gasification efficiency.
2. The control system of the invention realizes that the coal slurry, the hydrocarbon gas and the oxygen required by the gasification reaction stably enter the gasification reactor in proportion through the mixing atomizer arranged at the top of the gasification reactor. The control system can automatically adjust the rotating speed of the high-pressure coal slurry pump and the opening degrees of the hydrocarbon gas flow regulating valve and the oxygen flow regulating valve according to the proportion of the coal slurry, the hydrocarbon gas and the oxygen required by the co-gasification reaction of the coal slurry and the hydrocarbon gas, thereby adjusting the flow of the coal slurry, the hydrocarbon gas and the oxygen entering the gasification reactor and realizing that the gasification materials enter the gasification reactor in proportion.
3. The control system of the invention can ensure that the utilization rate of the raw materials entering the gasification reactor is higher, and the control system of the invention can adjust the material quantity entering the gasification reactor in time according to the proportion according to the process requirements no matter the gasification reactor is in a dynamic process or a steady-state process, thereby realizing the effective utilization of the materials and improving the utilization rate of the materials.
4. The control system of the invention not only can save the investment cost of the control system, reduce the complexity of the control system, but also improve the reliability of the control system. In the multi-mixing atomizer coal and hydrocarbon gas co-gasification technology, at least more than three mixing atomizers are needed, namely one coal slurry mixing atomizer and two hydrocarbon gas mixing atomizers or one hydrocarbon gas mixing atomizer and two coal slurry mixing atomizers and the like. In order to control the flow of the gasification material entering the gasification reactor through more than three mixing atomizers, at least more than three sets of control systems are required. The control system of the invention can proportionally control the flow of the coal slurry, the hydrocarbon gas and the oxygen which enter the gasification reactor through the mixing atomizer arranged at the top of the gasification reactor only by one set of control system, thereby saving the investment cost of the control system. The invention reduces the number of control systems to the minimum, thereby reducing the complexity of the control systems and improving the reliability of the control systems.
5. The control system of the invention ensures the safety of the gasification reactor. When the load of the gasification reactor is increased, the control system firstly increases the flow of the coal slurry and the flow of the hydrocarbon gas entering the gasification reactor, and then increases the flow of the oxygen entering the gasification reactor; when the load of the gasification reactor is reduced, the control system firstly reduces the flow of oxygen entering the gasification reactor, and then reduces the flow of coal slurry and the flow of hydrocarbon gas entering the gasification reactor, so that the excessive oxygen is avoided in the gasification process of the coal slurry and the hydrocarbon gas, and the safety of the gasification reactor is ensured.
6. The method for controlling the feeding of the coal slurry, the hydrocarbon gas and the oxygen has simple steps, is convenient to realize and is simple and convenient to operate, and ensures that the coal slurry, the hydrocarbon gas and the oxygen enter the gasification reactor in proportion.
7. The method comprises the steps of firstly obtaining and transmitting detection data, secondly processing the data of a hydrocarbon gas channel, a coal slurry channel and an oxygen channel, and finally controlling the data of the hydrocarbon gas channel, the coal slurry channel and the oxygen channel so as to maintain the flow measurement value of the hydrocarbon gas at a hydrocarbon gas flow set value, maintain the flow measurement value of the coal slurry at a coal slurry flow set value, maintain the flow measurement value of the oxygen at an oxygen flow set value and maintain the flow measurement value of the central oxygen at a central oxygen flow set value, thereby being convenient for adjusting the proportion of the coal slurry, the hydrocarbon gas and the oxygen of a gasification reactor.
In conclusion, the method has the advantages of simple steps, reasonable design, convenient implementation and good use effect, can stably control the proportion of the coal slurry, the hydrocarbon gas and the oxygen which enter the gasification reactor through the single-mixing atomizer, and also ensures the safety and the reliability of the control process.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a block diagram of a method of the present invention.
Description of reference numerals:
103-load setter; 104 — high value selector;
105-low selector; 201-a first slurry flow transmitter;
202-a second slurry flow transmitter; 203-coal slurry flow rate averager;
204-coal slurry flow regulator; 205-motor speed regulator;
206-a motor; 207-high pressure coal slurry pump;
208-a coal slurry pipeline; 209-slurry check valve;
301 — a first hydrocarbon gas flow transmitter; 302 — a second hydrocarbon gas flow transmitter;
303-hydrocarbon gas flow rate averager; 304-a hydrocarbon gas concentration setter;
305 — a fourth multiplier; 306-hydrocarbon gas flow regulator;
307 — a first multiplier; 308-a first electro-pneumatic valve positioner;
309-hydrocarbon gas flow regulating valve; 310-a hydrocarbon gas pipeline;
311-hydrocarbon gas check valve; 401 — a first oxygen flow transmitter;
402-second oxygen flow transmitter; 403-oxygen flow rate averager;
404-oxygen concentration setting device; 405 — a second multiplier;
406 — third multiplier; 407-oxygen flow regulator;
408-a second electropneumatic valve positioner; 409-oxygen flow regulating valve;
410-oxygen pipeline; 411 — oxygen check valve;
501-central oxygen flow transmitter; 502 — central oxygen flow setter;
503-central oxygen flow regulator; 504-third electro-pneumatic valve positioner;
505 — central oxygen flow regulating valve; 506 — a central oxygen conduit;
507 — central oxygen check valve; 510-outer ring oxygen pipeline;
1-a gasification reactor; 2-single mixing atomizer.
Detailed Description
A system for controlling the feed of a coal slurry, hydrocarbon gas and oxygen as shown in figure 1 is described by example 1.
Example 1
The feeding control system comprises a single mixing atomizer 2 and a control module, wherein the single mixing atomizer 2 is arranged on a gasification reactor 1, a hydrocarbon gas channel, a coal slurry channel, a central oxygen channel and an outer ring oxygen channel are arranged on the single mixing atomizer 2, the hydrocarbon gas channel is connected with a hydrocarbon gas pipeline 310, the coal slurry channel is connected with a coal slurry pipeline 208, the central oxygen channel is connected with a central oxygen pipeline 506, the outer ring oxygen channel is connected with an outer ring oxygen pipeline 510, and the central oxygen pipeline 506 and the outer ring oxygen pipeline 510 are connected with an oxygen pipeline 410;
the control module comprises a hydrocarbon gas control module, a coal slurry control module and an oxygen control module, wherein the hydrocarbon gas control module comprises a first hydrocarbon gas flow transmitter 301, a second hydrocarbon gas flow transmitter 302 and a hydrocarbon gas flow regulating valve 309 which are sequentially arranged on a hydrocarbon gas pipeline 310;
the coal slurry control module comprises a high-pressure coal slurry pump 207, a first coal slurry flow transmitter 201 and a second coal slurry flow transmitter 202 which are sequentially arranged on a coal slurry pipeline 208;
the oxygen control module comprises a first oxygen flow transmitter 401, a second oxygen flow transmitter 402 and an oxygen flow regulating valve 409 which are sequentially arranged on an oxygen pipeline 410, and a central oxygen flow transmitter 501 and a central oxygen flow regulating valve 505 which are sequentially arranged on a central oxygen pipeline 506.
In this embodiment, a hydrocarbon gas check valve 311 is disposed on the hydrocarbon gas pipeline 310, and the hydrocarbon gas check valve 311 is located between the hydrocarbon gas flow regulating valve 309 and the hydrocarbon gas channel;
a coal slurry check valve 209 is arranged on the coal slurry pipeline 208, and the coal slurry check valve 209 is positioned between the second coal slurry flow transmitter 202 and the coal slurry channel;
a central oxygen check valve 507 is arranged on the central oxygen pipeline 506, and the central oxygen check valve 507 is positioned between the central oxygen flow regulating valve 505 and the central oxygen channel.
In this embodiment, the outer ring oxygen pipeline 510 is provided with an oxygen check valve 411.
A method for controlling the feed of the coal slurry, the hydrocarbon gas and the oxygen gas as shown in fig. 2 is comprehensively described by examples 2 to 3.
Example 2
In this embodiment, the method includes the following steps:
step one, acquisition and transmission of detection data:
101, in the process that hydrocarbon gas enters a gasification reactor 1 from a single-mixing atomizer 2 through a hydrocarbon gas pipeline 310, a first hydrocarbon gas flow transmitter 301 and a second hydrocarbon gas flow transmitter 302 detect the flow of the hydrocarbon gas and send the detected first hydrocarbon gas flow and second hydrocarbon gas flow to a data processor;
102, in the process that coal slurry enters a gasification reactor 1 from a single mixing atomizer 2 through a coal slurry pipeline 208, a first coal slurry flow transmitter 201 and a second coal slurry flow transmitter 202 detect the coal slurry flow, and send the detected first coal slurry flow and second coal slurry flow to a data processor;
103, in the process that oxygen enters the gasification reactor 1 from the single-mixing atomizer 2 through an oxygen pipeline 410, a first oxygen flow transmitter 401 and a second oxygen flow transmitter 402 detect the oxygen flow, and send the detected first oxygen flow and second oxygen flow to a data processor;
104, detecting oxygen by the central oxygen flow transmitter 501 in the process that the oxygen enters the gasification reactor 1 from the single-mixing atomizer 2 through the central oxygen pipeline 506, and transmitting the detected central oxygen flow measurement value to the data processor;
step two, processing data of a hydrocarbon gas channel, a coal slurry channel and an oxygen channel:
the data processor calls a first multiplier 307 to multiply the hydrocarbon gas flow average value and the hydrocarbon gas concentration set value in the hydrocarbon gas concentration setter 304 to obtain a hydrocarbon gas flow measured value;
the data processor calls a second multiplier 405 to multiply the average value of the oxygen flow and the oxygen concentration set value in the oxygen concentration setter 404 to obtain the measured value of the oxygen flow;
step three, controlling data of a hydrocarbon gas channel, a coal slurry channel and an oxygen channel:
and step 304, the data processor calls a difference value comparator to compare the received central oxygen flow measurement value with a central oxygen flow set value in the central oxygen flow setter 502 to obtain a central oxygen flow deviation value, the data processor processes the central oxygen flow deviation value by using the central oxygen flow adjuster 503 to obtain the opening of the central oxygen flow adjusting valve 505, and the flow of oxygen passing through the central oxygen pipeline 506 is adjusted until the central oxygen flow measurement value is maintained at the central oxygen flow set value.
In this embodiment, in step 301, the data processor utilizes the hydrocarbon gas flow regulator 306 to process the deviation value of the hydrocarbon gas flow to obtain the opening of the hydrocarbon gas flow regulating valve 309, and regulates the flow of the hydrocarbon gas passing through the hydrocarbon gas pipeline 310 until the measured value of the hydrocarbon gas flow is maintained at the set value of the hydrocarbon gas flow, which includes the following specific processes:
the data processor processes the hydrocarbon gas flow deviation value by using the hydrocarbon gas flow regulator to obtain a first electric signal, the first electric signal is input into the first electric valve positioner 308, the first electric valve positioner 308 converts the first electric signal into a first standard air pressure signal, and the first standard air pressure signal controls the opening of the hydrocarbon gas flow regulating valve 309 until the hydrocarbon gas flow measured value is maintained at the hydrocarbon gas flow set value;
in step 302, the data processor processes the coal slurry flow deviation value by using the coal slurry flow regulator 204, and regulates the flow of the coal slurry passing through the coal slurry pipeline 208 until the measured coal slurry flow value is maintained at the set coal slurry flow value, which comprises the following specific processes:
the data processor processes the coal slurry flow deviation value by using the coal slurry flow regulator 204 to obtain a motor rotating speed control signal for controlling the motor 206 of the high-pressure coal slurry pump 207, adjusts the rotating speed of the motor 206 by using the motor speed regulator 205 according to the motor rotating speed control signal, and drives the high-pressure coal slurry pump 207 to operate by adjusting the rotating speed of the motor 206 until the coal slurry flow measured value is maintained at the coal slurry flow set value.
In this embodiment, in step 303, the data processor processes the oxygen flow deviation value by using the oxygen flow regulator 407 to obtain the opening degree of the oxygen flow regulating valve 409, and regulates the flow of oxygen passing through the oxygen pipeline 410 until the oxygen flow measurement value is maintained at the oxygen flow set value, which includes the following specific processes:
the data processor processes the oxygen flow deviation value by using the oxygen flow regulator to obtain a second electrical signal, the second electrical signal is input to the second electrical valve positioner 408, the second electrical valve positioner 408 converts the second electrical signal into a second standard air pressure signal, and the second standard air pressure signal controls the opening degree of the oxygen flow regulating valve 409 until the measured value of the oxygen flow is maintained at the set value of the oxygen flow.
In step 304, the data processor processes the central oxygen flow deviation value by using the central oxygen flow regulator to obtain the opening of the central oxygen flow regulating valve 505, and regulates the flow of oxygen passing through the central oxygen pipeline 506 until the measured value of the central oxygen flow is maintained at the set value of the central oxygen flow, which comprises the following specific processes:
the data processor processes the central oxygen flow deviation value by using the central oxygen flow regulator 503 to obtain a third electrical signal, the third electrical signal is input to the third electrical valve positioner 504, and the third electrical valve positioner 504 converts the third electrical signal into a third standard air pressure signal, and the third standard air pressure signal controls the opening degree of the central oxygen flow regulating valve 505 until the measured value of the central oxygen flow is maintained at the central oxygen flow set value.
In this embodiment, the process of obtaining the hydrocarbon gas flow set value, the coal slurry flow set value, the oxygen flow set value, and the central oxygen flow set value is as follows:
step A, setting a coal slurry flow load value through a load setter 103, presetting the flow ratio of coal slurry, natural gas and oxygen through a data processor, and acquiring a set value of the ratio of oxygen flow to coal slurry flow and a set value of the ratio of hydrocarbon gas flow to coal slurry flow according to the preset flow ratio of coal slurry, natural gas and oxygen;
step B, in the process of conveying hydrocarbon gas, coal slurry flow and oxygen, the data processor performs division processing on the measured value of the oxygen flow and the set value of the ratio of the oxygen flow to the coal slurry flow in the step 203 by using a divider 106 to obtain a calculated value of the coal slurry flow;
the data processor selects a high value in the coal slurry flow load value and the coal slurry flow calculation value as a coal slurry flow set value by using a high value selector 104;
step C, the data processor selects a low value in the coal slurry flow load value and the coal slurry flow measured value in the step 202 as a coal slurry flow low calculated value by using the low value selector 105;
the data processor multiplies the coal slurry flow low calculated value and the oxygen flow and coal slurry flow ratio set value by using a third multiplier 406 to obtain an oxygen flow set value; wherein, the central oxygen flow set value in the central oxygen flow setter 502 is 10% to 20% of the oxygen flow set value;
and step D, the data processor multiplies the measured value of the coal slurry flow by the set value of the ratio of the hydrocarbon gas flow to the coal slurry flow by using a fourth multiplier 305 to obtain the set value of the hydrocarbon gas flow.
In this embodiment, in actual use, the change rate of the coal slurry flow load value is not greater than 10%.
In this embodiment, it should be noted that, when the load of the gasification reactor 1 is increased, the flow rate of the coal slurry and the flow rate of the hydrocarbon gas entering the gasification reactor 1 are increased, and then the flow rate of the oxygen entering the gasification reactor 1 is increased; when the load of the gasification reactor 1 is reduced, the flow of oxygen entering the gasification reactor 1 is reduced firstly, and then the flow of coal slurry and the flow of hydrocarbon gas entering the gasification reactor 1 are reduced, so that the excessive oxygen is prevented in the gasification process of the coal slurry and the hydrocarbon gas, and the safety of the gasification reactor is ensured.
In this embodiment, it should be noted that the first electrical signal, the second electrical signal, and the third electrical signal are all electrical signals of 4 to 20 mA; the first standard air pressure signal, the second standard air pressure signal and the third standard air pressure signal are all standard air pressure signals of 0.02 MPa-0.1 MPa.
In this embodiment, the slurry flow rate regulator 204, the hydrocarbon gas flow rate regulator 306, the oxygen flow rate regulator 407, and the center oxygen flow rate regulator 503 are all PI regulators.
In this embodiment, the hydrocarbon gas is natural gas in practical use.
In this embodiment, the PI regulator is a proportional-integral regulator in actual use.
In the present embodiment, the flow rate ratio used in the present invention is a volume flow rate ratio.
In this example, coal, natural gas and oxygen are used as raw materials to produce synthesis gas, and the raw material conditions are as follows: the raw material proportion adopts volume flow ratio, the coal slurry, natural gas and oxygen are 1:728:871, and the flow set value of the coal slurry entering the gasification reactor 1 is 2.06m3The natural gas flow rate into the gasification reactor 1 is set to 1500.00Nm3The volume concentration of the natural gas is 97.0 percent, the pressure and the temperature of the natural gas are respectively 8.1MPa and 40 ℃, the volume concentration of the oxygen is 99.6 percent, and the flow rate of the oxygen entering the gasification reactor 1 is 1795.05Nm3The pressure and temperature of oxygen are respectively 8.3MPa and 30 ℃, and the operating pressure and temperature of the gasification reactor are respectively 6.5MPa and 1350 ℃. The flow rate set value of the coal slurry can be 1.03m3/h～2.26m3The flow rate of the natural gas can be adjusted within the range of/h, and the set value of the flow rate of the natural gas can be 748-1645Nm3The adjustment of the flow rate of oxygen can be carried out within the range of 894-1968 Nm3And h range adjustment.
After the coal slurry is pressurized to 7.8MPa by a high-pressure coal slurry pump 207, the coal slurry, natural gas with the pressure of 8.1MPa and oxygen with the pressure of 8.3MPa enter a gasification reactor 1 through a single-mixing atomizer 2. After entering a gasification reactor 1, the coal slurry and natural gas react with oxygen under the conditions of 6.5MPa of pressure and 1350 ℃ of temperature to generate CO + H2 synthetic gas, and the gas production rate is 6733.17Nm 3/H.
In this embodiment, the data processor 6 is a HOLLiAS MACS-K distributed control system of hangzhou and lishi automation ltd.
In this embodiment, the first slurry flow transmitter 201 and the second slurry flow transmitter 202 are AE series electromagnetic flowmeters of shanghai river motors ltd, the motor speed regulator 205 is an Emotron VFX series variable frequency speed regulator of the sweden union company, the motor 206 is an IAG series variable frequency speed control motor of the shanghai kuntai motors ltd, the high-pressure slurry pump 207 is a piston diaphragm pump of the shanghai comet engineering equipment ltd, and the slurry check valve 209 may be a check valve of the shanghai meizhu automation company.
In this embodiment, the first hydrocarbon gas flow transmitter 301 and the second hydrocarbon gas flow transmitter 302 are JGM series thermal gas mass flowmeters of siemens jenno measurement and control equipment ltd, and the first electrical valve positioner 308 is a DR5215 series electrical valve positioner of siemens china ltd. The hydrocarbon gas flow regulating valve 309 is an a-series high differential pressure regulating valve of wu fai instrument co. The hydrocarbon gas check valve 311 is a KDH41Y series check valve manufactured by du chuan air valve limited.
In this embodiment, the first oxygen flow transmitter 401, the second oxygen flow transmitter 402, and the central oxygen flow transmitter 501 are JGM series thermal gas mass flowmeters of sienna measurement and control equipment ltd. The second electric valve positioner 408 is a HEP series electric valve positioner of Chongqing Chuan instrument automation GmbH, the third electric valve positioner 504 is a HEP series electric valve positioner of Chongqing Chuan instrument automation GmbH, the oxygen flow regulating valve 409 is a G150 series straight-through single-seat regulating valve of the Altamm fluid control technology Beijing GmbH, the central oxygen flow regulating valve 505 is a G150 series straight-through single-seat regulating valve of the Altamm fluid control technology Beijing GmbH, and the oxygen check valve 411 and the central oxygen check valve 507 are KDH41Y series check valves of the Dunchuan sky valve GmbH.
Example 3
In this example, the difference from example 2 is:
the synthesis gas is produced by taking coal, natural gas and oxygen as raw materials, and the raw material conditions are as follows: coal slurry, natural gas and oxygen (1: 486: 707). The flow rate of the coal slurry into the gasification reactor 1 is set to be 2.06m3The natural gas flow rate into the gasification reactor 1 is set to 1000.00 Nm/h3The volume concentration set value of the natural gas is 96.5 percent, the pressure and the temperature of the natural gas are respectively 8.1MPa and 40 ℃; the volume concentration of oxygen is set to be 99.6 percent, the flow rate of oxygen entering the gasification reactor 1 is set to be 1454.76Nm3/h, the pressure and the temperature of the oxygen are respectively 8.3MPa and 30 ℃, and the flow rate of coal slurry can be set to be 1.03m3/h～2.26m3The flow rate set value of the natural gas can be adjusted within the range of 496-1098 Nm3/h, and the flow rate set value of the oxygen can be adjusted within the range of 721-1597 Nm 3/h.
The coal slurry is pressurized to 7.8MPa by a high-pressure coal slurry pump and then sent into a single mixing atomizer 2, and enters a gasification reactor 1 together with natural gas with the pressure of 8.1MPa and oxygen with the pressure of 8.3MPa through the single mixing atomizer 2. After entering the reactor 1, the coal slurry and the natural gas react with oxygen under the conditions of 6.5MPa of pressure and 1350 ℃ of temperature to generate CO + H2 synthetic gas, and the gas production rate is 5424.92Nm 3/H.
In this embodiment, the data processor 6 is a WebField JX-300XP distributed control system of zhejiang central control information technology limited.
In this example, the other method steps are the same as in example 2.
In conclusion, the method has the advantages of simple steps, reasonable design, convenient implementation and good use effect, can stably control the proportion of the coal slurry, the hydrocarbon gas and the oxygen which enter the gasification reactor through the single-mixing atomizer, and also ensures the safety and the reliability of the control process.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (7)
1. A coal slurry, hydrocarbon gas and oxygen feeding control system is characterized in that: the single-mixing atomizer is arranged on a gasification reactor (1), and comprises a single-mixing atomizer (2) and a control module, wherein the single-mixing atomizer (2) is provided with a hydrocarbon gas channel, a coal slurry channel, a central oxygen channel and an outer ring oxygen channel, the hydrocarbon gas channel is connected with a hydrocarbon gas pipeline (310), the coal slurry channel is connected with a coal slurry pipeline (208), the central oxygen channel is connected with a central oxygen pipeline (506), the outer ring oxygen channel is connected with an outer ring oxygen pipeline (510), and the central oxygen pipeline (506) and the outer ring oxygen pipeline (510) are connected with an oxygen pipeline (410);
the control module comprises a hydrocarbon gas control module, a coal slurry control module and an oxygen control module, wherein the hydrocarbon gas control module comprises a first hydrocarbon gas flow transmitter (301), a second hydrocarbon gas flow transmitter (302) and a hydrocarbon gas flow regulating valve (309) which are sequentially arranged on a hydrocarbon gas pipeline (310);
the coal slurry control module comprises a high-pressure coal slurry pump (207), a first coal slurry flow transmitter (201) and a second coal slurry flow transmitter (202) which are sequentially arranged on a coal slurry pipeline (208);
the oxygen control module comprises a first oxygen flow transmitter (401), a second oxygen flow transmitter (402) and an oxygen flow regulating valve (409) which are sequentially arranged on an oxygen pipeline (410), and a central oxygen flow transmitter (501) and a central oxygen flow regulating valve (505) which are sequentially arranged on a central oxygen pipeline (506).
2. A system for controlling the feed of a coal slurry, a hydrocarbon gas and oxygen as defined in claim 1, wherein: a hydrocarbon gas check valve (311) is arranged on the hydrocarbon gas pipeline (310), and the hydrocarbon gas check valve (311) is positioned between the hydrocarbon gas flow regulating valve (309) and the hydrocarbon gas channel;
a coal slurry check valve (209) is arranged on the coal slurry pipeline (208), and the coal slurry check valve (209) is positioned between the second coal slurry flow transmitter (202) and the coal slurry channel;
a central oxygen check valve (507) is arranged on the central oxygen pipeline (506), and the central oxygen check valve (507) is positioned between the central oxygen flow regulating valve (505) and the central oxygen channel.
3. A system for controlling the feed of a coal slurry, a hydrocarbon gas and oxygen as defined in claim 1, wherein: an oxygen check valve (411) is arranged on the outer ring oxygen pipeline (510).
4. A method for controlling the feed of a coal slurry, a hydrocarbon gas and oxygen, the method comprising the steps of:
step one, acquisition and transmission of detection data:
101, in the process that hydrocarbon gas enters a gasification reactor (1) from a single-mixing atomizer (2) through a hydrocarbon gas pipeline (310), a first hydrocarbon gas flow transmitter (301) and a second hydrocarbon gas flow transmitter (302) detect the flow of the hydrocarbon gas and send the detected first hydrocarbon gas flow and second hydrocarbon gas flow to a data processor;
102, in the process that coal slurry enters a gasification reactor (1) from a single mixing atomizer (2) through a coal slurry pipeline (208), a first coal slurry flow transmitter (201) and a second coal slurry flow transmitter (202) detect the flow of the coal slurry, and send the detected first coal slurry flow and the detected second coal slurry flow to a data processor;
103, in the process that oxygen enters a gasification reactor (1) from a single-mixing atomizer (2) through an oxygen pipeline (410), a first oxygen flow transmitter (401) and a second oxygen flow transmitter (402) detect the oxygen flow, and send the detected first oxygen flow and second oxygen flow to a data processor;
104, detecting oxygen by a central oxygen flow transmitter (501) in the process that the oxygen enters a gasification reactor (1) from a single-mixing atomizer (2) through a central oxygen pipeline (506), and sending a detected central oxygen flow measurement value to a data processor;
step two, processing data of a hydrocarbon gas channel, a coal slurry channel and an oxygen channel:
step 201, the data processor processes the obtained first hydrocarbon gas flow and the second hydrocarbon gas flow through a hydrocarbon gas flow averaging device (303) to obtain a hydrocarbon gas flow average value;
the data processor calls a first multiplier (307) to multiply the hydrocarbon gas flow average value and a hydrocarbon gas concentration set value in a hydrocarbon gas concentration setter (304) to obtain a hydrocarbon gas flow measured value;
step 202, the data processor processes the obtained first coal slurry flow and the second coal slurry flow through a coal slurry flow mean value device (203) to obtain a coal slurry flow mean value, and the coal slurry flow mean value is used as a coal slurry flow measured value;
step 203, the data processor processes the obtained first oxygen flow and the second oxygen flow through an oxygen flow averager (403) to obtain an oxygen flow average value;
the data processor calls a second multiplier (405) to multiply the average value of the oxygen flow and the set value of the oxygen concentration in the oxygen concentration setter (404) to obtain a measured value of the oxygen flow;
step three, controlling data of a hydrocarbon gas channel, a coal slurry channel and an oxygen channel:
step 301, a data processor calls a difference value comparator to perform difference value comparison on a received hydrocarbon gas flow measurement value and a hydrocarbon gas flow set value to obtain a hydrocarbon gas flow deviation value, the data processor processes the hydrocarbon gas flow deviation value by using a hydrocarbon gas flow regulator (306) to obtain the opening degree of a hydrocarbon gas flow regulating valve (309), and the flow of the hydrocarbon gas passing through a hydrocarbon gas pipeline (310) is regulated until the hydrocarbon gas flow measurement value is maintained at the hydrocarbon gas flow set value;
step 302, the data processor calls a difference value comparator to compare the received coal slurry flow measured value with a coal slurry flow set value to obtain a coal slurry flow deviation value, the data processor processes the coal slurry flow deviation value by using a coal slurry flow regulator (204), and the flow of the coal slurry in a coal slurry pipeline (208) is regulated until the coal slurry flow measured value is maintained at the coal slurry flow set value;
step 303, simultaneously, the data processor calls a difference value comparator to compare the difference value of the received oxygen flow measured value and the oxygen flow set value to obtain an oxygen flow deviation value, the data processor processes the oxygen flow deviation value by using an oxygen flow regulator (407) to obtain the opening degree of an oxygen flow regulating valve (409), and the flow of oxygen passing through an oxygen pipeline (410) is regulated until the oxygen flow measurement value is maintained at the oxygen flow set value;
and step 304, the data processor calls a difference value comparator to compare the received central oxygen flow measurement value with a central oxygen flow set value in a central oxygen flow setter (502) to obtain a central oxygen flow deviation value, the data processor processes the central oxygen flow deviation value by using a central oxygen flow regulator (503) to obtain the opening degree of a central oxygen flow regulating valve (505), and the flow of oxygen passing through a central oxygen pipeline (506) is regulated until the central oxygen flow measurement value is maintained at the central oxygen flow set value.
5. A method of controlling the feed of a coal slurry, a hydrocarbon gas and oxygen as claimed in claim 4, wherein: in step 301, the data processor processes the deviation value of the hydrocarbon gas flow by using the hydrocarbon gas flow regulator (306) to obtain the opening degree of the hydrocarbon gas flow regulating valve (309), and regulates the flow of the hydrocarbon gas passing through the hydrocarbon gas pipeline (310) until the measured value of the hydrocarbon gas flow is maintained at the set value of the hydrocarbon gas flow, which comprises the following specific processes:
the data processor utilizes the hydrocarbon gas flow regulator (306) to process the hydrocarbon gas flow deviation value to obtain a first electric signal, the first electric signal is input into the first electric valve positioner (308), the first electric valve positioner (308) converts the first electric signal into a first standard air pressure signal, and the first standard air pressure signal controls the opening degree of the hydrocarbon gas flow regulating valve (309) until the measured value of the hydrocarbon gas flow is maintained at the hydrocarbon gas flow set value;
in step 302, the data processor processes the coal slurry flow deviation value by using the coal slurry flow regulator (204), and regulates the flow of the coal slurry passing through the coal slurry pipeline (208) until the measured coal slurry flow value is maintained at the set coal slurry flow value, which comprises the following specific processes:
the data processor utilizes the coal slurry flow regulator (204) to process the coal slurry flow deviation value to obtain a motor rotating speed control signal of a motor (206) for controlling the high-pressure coal slurry pump (207), the data processor regulates the rotating speed of the motor (206) through a motor speed regulator (205) according to the motor rotating speed control signal, and drives the high-pressure coal slurry pump (207) to operate through regulating the rotating speed of the motor (206) until the coal slurry flow measured value is maintained at the coal slurry flow set value.
6. A method of controlling the feed of a coal slurry, a hydrocarbon gas and oxygen as claimed in claim 4, wherein: in step 303, the data processor processes the oxygen flow deviation value by using the oxygen flow regulator (407) to obtain the opening degree of the oxygen flow regulating valve (409), and regulates the flow of oxygen passing through the oxygen pipeline (410) until the oxygen flow measurement value is maintained at the oxygen flow set value, which comprises the following specific processes:
the data processor processes the oxygen flow deviation value by using the oxygen flow regulator (407) to obtain a second electric signal, the second electric signal is input into the second electric valve positioner (408), the second electric valve positioner (408) converts the second electric signal into a second standard air pressure signal, and the second standard air pressure signal controls the opening degree of the oxygen flow regulating valve (409) until the measured oxygen flow value is maintained at the set oxygen flow value.
In step 304, the data processor processes the central oxygen flow deviation value by using the central oxygen flow regulator (503) to obtain the opening degree of the central oxygen flow regulating valve (505), and regulates the flow of oxygen passing through the central oxygen pipeline (506) until the measured value of the central oxygen flow is maintained at the set value of the central oxygen flow, which comprises the following specific steps:
the data processor processes the central oxygen flow deviation value by using the central oxygen flow regulator (503) to obtain a third electric signal, the third electric signal is input into a third electric valve positioner (504), the third electric valve positioner (504) converts the third electric signal into a third standard air pressure signal, and the third standard air pressure signal controls the opening degree of the central oxygen flow regulating valve (505) until the measured value of the central oxygen flow is maintained at the set value of the central oxygen flow.
7. A method of controlling the feed of a coal slurry, a hydrocarbon gas and oxygen as claimed in claim 1, wherein: the process for obtaining the hydrocarbon gas flow set value, the coal slurry flow set value, the oxygen flow set value and the central oxygen flow set value is as follows:
step A, setting a coal slurry flow load value through a load setter (103), presetting the flow ratio of coal slurry, natural gas and oxygen through a data processor, and acquiring a set value of the ratio of oxygen flow to coal slurry flow and a set value of the ratio of hydrocarbon gas flow to coal slurry flow according to the preset flow ratio of coal slurry, natural gas and oxygen;
step B, in the process of conveying hydrocarbon gas, coal slurry flow and oxygen, the data processor performs division processing on the measured value of the oxygen flow and the set value of the ratio of the oxygen flow to the coal slurry flow in the step 203 by using a divider (106) to obtain a calculated value of the coal slurry flow;
the data processor selects a high value in the coal slurry flow load value and the coal slurry flow calculation value as a coal slurry flow set value by using a high value selector (104);
c, selecting a low value in the coal slurry flow load value and the coal slurry flow measured value in the step 202 by the data processor by using a low value selector (105) as a coal slurry flow low calculated value;
the data processor multiplies the coal slurry flow low calculated value and the oxygen flow and coal slurry flow ratio set value by using a third multiplier (406) to obtain an oxygen flow set value; wherein, the central oxygen flow set value in the central oxygen flow setter (502) is 10% -20% of the oxygen flow set value;
and D, multiplying the measured value of the coal slurry flow and the set value of the ratio of the hydrocarbon gas flow to the coal slurry flow by the data processor by using a fourth multiplier (305) to obtain the set value of the hydrocarbon gas flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011592709.7A CN112852495A (en) | 2020-12-29 | 2020-12-29 | Feeding control method for coal slurry, hydrocarbon gas and oxygen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011592709.7A CN112852495A (en) | 2020-12-29 | 2020-12-29 | Feeding control method for coal slurry, hydrocarbon gas and oxygen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112852495A true CN112852495A (en) | 2021-05-28 |
Family
ID=75998145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011592709.7A Pending CN112852495A (en) | 2020-12-29 | 2020-12-29 | Feeding control method for coal slurry, hydrocarbon gas and oxygen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112852495A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063132A (en) * | 2011-01-07 | 2011-05-18 | 水煤浆气化及煤化工国家工程研究中心 | Oxygen-coal ratio automatic control system of dust coal pressurization gasification device |
| CN103838265A (en) * | 2014-03-07 | 2014-06-04 | 西北化工研究院 | Control system for controlling ratio of hydrogen and carbonic oxide in synthesis gas production process |
| JP6304856B2 (en) * | 2013-06-12 | 2018-04-04 | 一般財団法人石炭エネルギーセンター | Biomass gasification method using improved three-column circulating fluidized bed |
| CN109609194A (en) * | 2018-12-27 | 2019-04-12 | 西安元创化工科技股份有限公司 | A kind of slurry and oxygen feeding control method of multi-channel nozzle |
| CN110643393A (en) * | 2019-10-21 | 2020-01-03 | 空气化工产品神华(上海)气化技术有限公司 | Multi-channel coal water slurry burner control system |
| CN111621332A (en) * | 2019-02-28 | 2020-09-04 | 中国石油化工股份有限公司 | Co-gasification feeding method for materials with different properties |
-
2020
- 2020-12-29 CN CN202011592709.7A patent/CN112852495A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063132A (en) * | 2011-01-07 | 2011-05-18 | 水煤浆气化及煤化工国家工程研究中心 | Oxygen-coal ratio automatic control system of dust coal pressurization gasification device |
| JP6304856B2 (en) * | 2013-06-12 | 2018-04-04 | 一般財団法人石炭エネルギーセンター | Biomass gasification method using improved three-column circulating fluidized bed |
| CN103838265A (en) * | 2014-03-07 | 2014-06-04 | 西北化工研究院 | Control system for controlling ratio of hydrogen and carbonic oxide in synthesis gas production process |
| CN109609194A (en) * | 2018-12-27 | 2019-04-12 | 西安元创化工科技股份有限公司 | A kind of slurry and oxygen feeding control method of multi-channel nozzle |
| CN111621332A (en) * | 2019-02-28 | 2020-09-04 | 中国石油化工股份有限公司 | Co-gasification feeding method for materials with different properties |
| CN110643393A (en) * | 2019-10-21 | 2020-01-03 | 空气化工产品神华(上海)气化技术有限公司 | Multi-channel coal water slurry burner control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6269286B1 (en) | System and method for integrated gasification control | |
| JPH0239441B2 (en) | ||
| CN108592079A (en) | The simplified control method of various gas mixing automatic adjustment | |
| US7877979B2 (en) | Integrated gasification combined cycle plant, method of controlling the plant, and method of producing fuel gas | |
| CN112852495A (en) | Feeding control method for coal slurry, hydrocarbon gas and oxygen | |
| CN103838265A (en) | Control system for controlling ratio of hydrogen and carbonic oxide in synthesis gas production process | |
| CN109609194B (en) | Slurry and oxygen feeding control method of multi-channel nozzle | |
| CN109399563B (en) | Non-catalytic partial oxidation method and device for large and medium-sized by-product superheated steam | |
| CN116966839A (en) | Green synthetic ammonia control system and method | |
| CN116730359A (en) | Flexibly-controlled green energy ammonia production system and green energy ammonia production method | |
| CN115096368A (en) | Fuel cell comprehensive test platform and electric pile temperature control method thereof | |
| US11566192B2 (en) | Fuel production system | |
| JP2016532772A (en) | Equipment and method for effectively using surplus electrical energy | |
| TW202212261A (en) | Method for the control of pressure in a loop for the preparation of ammonia or methanol | |
| CN218645017U (en) | Gas pipeline conveying and adjusting system | |
| CN220265631U (en) | Powder coke blending and burning equipment of pulverized coal gasification furnace | |
| CN115247085A (en) | Raw oil reaction optimization control method and system | |
| CN215718998U (en) | High-pressure water gas expansion power generation system produced by entrained flow coal gasification | |
| CN213012701U (en) | High-pressure fine coal dense-phase conveying system | |
| WO2023158364A1 (en) | A method for the production of sponge iron from iron ore | |
| CN212005194U (en) | Gas flow automatic regulating system of power plant | |
| CN211694990U (en) | Fuel calorific value control device of multi-gas-source gas turbine | |
| Tomoda et al. | Hydrogen pressure control scheme of hydrogen generation system using sodium borohydride for fuel cell vehicle | |
| AU2003231326B2 (en) | System and method for integrated gasification control | |
| CN117858980A (en) | Method and device for operating an electrolysis cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210528 |