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A method for equalizing the surface temperature of a reformer furnace tube

A surface temperature, reformer technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of negative effects of heat conduction, poor stability and reliability, and short service life of furnace tubes, and achieve endothermic catalytic reactions. Balance, prolong service life and reduce energy consumption

Inactive Publication Date: 2016-08-31
SHANGHAI HUALIN IND GASES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At present, at home and abroad, the balanced optimization of the surface temperature of steam reforming hydrogen production furnace tubes mostly stays in the relatively primitive visual inspection method, and some enterprises adopt the one-sided operation method of local temperature measurement and local adjustment; Individual furnace tubes are pasted with temperature sensing chips on their surface and transmitted to the transmitter for reference display, but the service life of this temperature patch facility is short, and its stability and reliability are poor. In such a long-term operation, the furnace tube is still in a blind tube operation, and the installation of the patch on the surface of the furnace tube also has a local negative impact on the heat conduction of the furnace tube, and the installation is not easy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] From March 7th to 8th, 2011, the steam reforming hydrogen production furnace device of Shanghai Hualin Industrial Gas Co., Ltd. (SMR1 device for short) was subjected to super load test. During this period, the working conditions of the reformer burners were checked and adjusted, and the surface temperature of the furnace tubes was monitored most closely. The surface temperatures of all 56 furnace tubes in the furnace were measured four times. By analyzing the data obtained by measurement, and adjusting the opening of the burner combustion air and low-pressure fuel gas valve 4 times to ensure that the surface temperature of the 56 furnace tubes does not exceed the design value of 960°C, and at the same time promote the surface temperature of the 56 furnace tubes. Be as balanced as possible.

[0032] ◆Infrared high temperature detector was used to measure the surface temperature of 56 furnace tubes of SMR1 reformer one by one, and OFFICE-EXCEL software was used to compare...

Embodiment 2

[0042] A method for equalizing the surface temperature of a reformer furnace tube, the method comprising the following steps:

[0043] (1) Set the combustion-supporting air, high-pressure fuel intake valve, and low-pressure fuel intake valve at the burner inlet to the fully open state;

[0044] (2) When the reformer is under the highest load condition (that is, under the full load or overload test condition, the optimization and adjustment are carried out, and the optimization operation requires a time condition of 24 hours of stable working conditions). The temperature of each furnace tube is measured one by one. According to the measured data, the burner in the corresponding area of ​​the high-temperature furnace tube is selected, and the intake air volume of the combustion-supporting air valve on the burner is reduced; the adjustment range is 5% of the opening and closing degree.

[0045] The infrared high temperature detector selects the fire observation hole of the sectio...

Embodiment 3

[0050] A method for equalizing the surface temperature of a reformer furnace tube, the method comprising the following steps:

[0051] (1) Set the combustion-supporting air at the inlet of the burner, the high-pressure fuel intake valve, and the low-pressure fuel intake valve to a fully open state;

[0052] (2) Under the highest load condition of the reformer (that is, to optimize and adjust during the full load or overload test conditions, and to optimize the operation requires a 24-hour stable working condition) to use infrared high-temperature detectors to monitor each The temperature of the furnace tubes is measured one by one. According to the measured data, select the burner in the corresponding area of ​​the high-temperature furnace tube, and reduce the intake air volume of the combustion air valve on the burner; the adjustment range is 5%.

[0053] The infrared high-temperature detector selects the fire observation hole in the cross-section of the high-temperature sect...

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Abstract

The invention relates to a converter surface temperature equalization method. The method comprises the following steps: 1, allowing the combustion air valve, high pressure fuel inlet valve and the low pressure fuel inlet valve at the inlet of a combustor to be in fully-open state; 2, measuring the temperatures of all furnace tubes in a converter by an infrared ray high temperature detector one by one, selecting a combustor of a high temperature furnace corresponding area, and turning down the air inflow of the combustion air valve on the combustor; 3, stabilizing combusting for above 2h after the adjustment of the combustion air valve, and repeating step 2; 4, circulating the step 2 and step 3 several times; and 5, turning down the low pressure fuel inlet valve on the combustor if parts of parts of the surface temperatures of the furnace tubes in the converter are high in order to control, and adjusting the operation of the high pressure fuel inlet valve if parts of a small amount of high temperature furnace tubes exist in order to carry out final improvement. Compared with the prior art, the method has the advantages of safety, simplicity, reliability and strong operationality.

Description

technical field [0001] The invention relates to a reformer, in particular to a method for equalizing the surface temperature of a reformer furnace tube. Background technique [0002] Chemical production enterprises take ensuring the safety, reliability and sustainability of enterprise equipment as the central goal of enterprise management. This goal is directly related to the life of the enterprise and is the top priority in enterprise management. [0003] In the large-scale chemical steam reforming hydrogen production plant, the reformer equipment is the core production equipment. This large-scale steam reformer generally adopts a top-firing negative pressure furnace. The furnace tubes are arranged in rows on both sides of the burner, and the methane steam passes through the flow Through the reformer tube, the C-H high temperature chain scission and chemical reaction are promoted by the heating method of absorbing the radiant heat of the burner flame. The structure of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/22
Inventor 高嵩王乘东谭子龙蔡建培
Owner SHANGHAI HUALIN IND GASES
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