Improved thermal ignition method of combustion furnace of sulfur recovery device

A sulfur recovery and combustion furnace technology, applied in the direction of combustion ignition, combustion method, lighting and heating equipment, etc., can solve the problems of increasing the amount of acid gas flaring and increasing the risk of operation, so as to reduce acid gas flaring and improve ignition Efficiency, reduction of environmental pollution and loss of benefits

Active Publication Date: 2013-03-06
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only increases the risk of operation, but also increases the amount of acid gas flare

Method used

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  • Improved thermal ignition method of combustion furnace of sulfur recovery device
  • Improved thermal ignition method of combustion furnace of sulfur recovery device
  • Improved thermal ignition method of combustion furnace of sulfur recovery device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An improved thermal ignition method for a combustion furnace of a sulfur recovery unit, such as figure 2 and 3 shown, including the following steps:

[0037] (1) Shutdown and purging: When there is an emergency stop of the sulfur recovery unit, start the shutdown interlock, close the gas interlock valves 18 and 19, close the combustion air interlock valve 1 and the combustion air control valves 2 and 3, and close the acid gas interlock valves 10 and 13. Gas inlet furnace control valve 5 and acid gas inlet furnace ball valve 7 stop feeding gas, combustion-supporting air and acid gas into the combustion furnace to prevent a large amount of air and acid gas from entering the furnace during hot start, and avoid flash explosion during ignition. Then press the I-1 stop button, open the nitrogen interlock valve 15 and the nitrogen ball valve 16 to feed nitrogen into the furnace, and purge the furnace for 5 minutes, with a purge flow of about 1000m 3 / h, to exhaust the com...

Embodiment 2

[0043] The difference from Example 1 is that the furnace temperature in step (3) is 1300 degrees. Control the volume ratio of the combustion-supporting air entering the furnace to the acid gas entering the furnace to be 2.4:1.

Embodiment 3

[0045] The difference from Example 1 is that the furnace temperature in step (3) is 1000 degrees. Control the volume ratio of the combustion-supporting air entering the furnace to the acid gas entering the furnace to be 2.1:1.

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Abstract

The invention discloses an improved thermal ignition method of a combustion surface of a sulfur recovery device. The improved thermal ignition method comprises the following steps of: (1) stopping to blow; (2) replacing the system; (3) inspecting a hearth: inspecting whether the temperature in the hearth is above 800 DEG C after the system is replaced, if so, carrying out the following step, and if not, igniting according to the original ignition process; (4) carrying out hot start at temperature more than 800 DEG C: switching on a combustion air interlocking valve, and allowing to switch on an acidic gas interlocking valve; and (5) igniting main combustion acidic gas: switching on the combustion air interlocking valve, feeding combustion air into the combustion furnace, then switching on the acidic gas interlocking valve, an acidic gas control valve and an acidic gas furnace feeding ball valve, and feeding the acidic gas into the furnace, igniting, and finally canceling the hot start procedure under temperature more than 800 DEG C. By adopting the improved heating ignition method, the ignition efficiency can be improved, the torching of the acidic gas can be reduced, and the environmental pollution can be reduced.

Description

technical field [0001] The invention relates to an ignition method for a combustion furnace of a sulfur recovery device, in particular to an improved thermal ignition method for a combustion furnace of a sulfur recovery device. Background technique [0002] Most of the sulfur recovery devices used in domestic petrochemical plants are the patented technology and basic design of the Italian KTI company. The sulfur recovery of the sulfur recovery unit adopts a double-zone combustion furnace and a two-stage CLAUS reaction process. The combustion reaction part adopts a partial combustion method, which is mainly realized by the process of generating sulfur and water after incomplete combustion of hydrogen sulfide and oxygen. Its main reaction is: 2H 2 S+O 2 →2H 2 O+2S, this reaction is mainly completed in the combustion furnace, and the normal working temperature of the combustion furnace is required to be in the range of 1000-1300 degrees, so when the device is started, it nee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23Q13/00C01B17/04
Inventor 陈喜洁戴国儒梁雄东梁慧军王许松
Owner CHINA PETROLEUM & CHEM CORP
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