Method and system for optimizing feed gas supply scheme of multiple hydrogen production devices in refinery plant

A technology of hydrogen production device and optimization method, which is applied in chemical instruments and methods, design optimization/simulation, hydrogen and other directions, can solve the problems of increasing the cost of retrofitting and the loss of shutdown of the device, so as to improve the efficiency of hydrogen production, reduce the cost of hydrogen production, The effect of increased installation and cost

Pending Publication Date: 2022-04-08
ZHEJIANG SUPCON TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its disadvantage is that it increases the cost of transformation and the loss of equipment shutdown during the improvement period

Method used

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  • Method and system for optimizing feed gas supply scheme of multiple hydrogen production devices in refinery plant
  • Method and system for optimizing feed gas supply scheme of multiple hydrogen production devices in refinery plant
  • Method and system for optimizing feed gas supply scheme of multiple hydrogen production devices in refinery plant

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] figure 1 A schematic flow chart of a method for optimizing the raw material gas supply scheme of multiple hydrogen production units in a refinery in one embodiment of the present application is shown. Such as figure 1 As shown, the method for optimizing the raw material gas supply scheme of multiple hydrogen production units in the refinery in this embodiment includes:

[0078] S10. Obtain refinery feed gas data, input the refinery feed gas data into a pre-established production process model, and obtain the hydrogen production ratio and unit hydrogen production cost of each feed gas in each hydrogen production device;

[0079] S20. According to the size of the unit hydrogen production cost, sort the combination of raw material gas and hydrogen production device to obtain a combination queue;

[0080] S30. According to the order of unit hydrogen production cost from low to high, based on the raw material gas data, hydrogen production ratio and hydrogen production uppe...

Embodiment 2

[0160] First, based on the refinery DCS and real-time database, the LIMS analysis data, raw material composition thermodynamic data, and operation data of each hydrogen production unit within 3 months were obtained, and used to establish the production process model of the hydrogen production unit. The main steps are as follows:

[0161] Calculate the equilibrium constant of the reaction process of reformer and intermediate transformer;

[0162] Calculate the composition of medium-change gas based on the flow rate, composition, steam distribution and reaction equilibrium constant of raw gas;

[0163] Repeat steps A and B for each set of data to obtain the calculation results of the medium-change gas composition within 3 months;

[0164] Using the partial least squares regression method, the calculation results of the medium-change gas composition within 3 months are compared and regressed with the actual analysis results of the medium-change gas composition, and the catalyst p...

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Abstract

The invention relates to a refinery multiple hydrogen production device feed gas supply scheme optimization method, which comprises the following steps: S10, inputting refinery feed gas data into a pre-established production process model to obtain the hydrogen production ratio and unit hydrogen production cost of each feed gas in each hydrogen production device; s20, sorting the feed gas and hydrogen production device combinations according to the unit hydrogen production cost to obtain a combination queue; s30, according to the sequence of unit hydrogen production cost from low to high, based on the hydrogen production ratio of the feed gas data and hydrogen production upper and lower limit constraints of each hydrogen production device, calculating the actual feed gas supply amount and the actual hydrogen production amount of each combination; s40, combinations are selected according to the unit hydrogen production cost from low to high until the total hydrogen production amount of the selected combinations meets the preset hydrogen production amount requirement; and S50, taking the selected combination and the corresponding actual feed gas supply amount as a scheme optimization result. According to the optimization method, devices and cost are not increased, and the operation parameters can be quantitatively adjusted.

Description

technical field [0001] The application belongs to the technical field of fossil fuel hydrogen production, and in particular relates to a method for optimizing feed gas supply schemes of multiple hydrogen production units in a refinery. Background technique [0002] With the continuous expansion of crude oil processing scale, the demand for hydrogen resources in refineries is increasing year by year, and the cost of hydrogen production has become one of the main raw material costs for crude oil processing in refineries. Therefore, it is urgent to optimize the hydrogen production process, thereby reducing the cost of hydrogen production and improving the efficiency of hydrogen production. [0003] Hydrocarbon steam hydrogen production technology is currently the most widely used and mature technology in industry, and the following methods are usually used to optimize the hydrogen production process: [0004] (1) Proposal and improvement of the pre-reforming process: add a pre...

Claims

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Application Information

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IPC IPC(8): G06F30/20C01B3/48C01B3/38C01B3/56G06F119/08
Inventor 蒋益波王宽心江泉达韩文巧黄小婷吴哲峰郭廉洁陈镭
Owner ZHEJIANG SUPCON TECH
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