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Ignition method of water wall natural gas partial oxidation reforming furnace

A technology of natural gas and reformer, which is applied in the chemical industry to achieve the effects of avoiding frequent switching, easy control, and reducing production costs

Active Publication Date: 2015-04-22
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the technology to realize normal ignition under the condition that the furnace body of the water-walled natural gas partial reformer does not store heat remains to be explored.

Method used

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  • Ignition method of water wall natural gas partial oxidation reforming furnace
  • Ignition method of water wall natural gas partial oxidation reforming furnace
  • Ignition method of water wall natural gas partial oxidation reforming furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Introduce ignition natural gas and ignition air into the ignition burner, and control the flow ratio of ignition natural gas and ignition air to 1:10, use the ignition burner to heat the furnace to 289 ° C, under the condition of stable combustion of the ignition burner, Introduce process natural gas and auxiliary air into the process burner, and control the flow ratio of process natural gas and auxiliary air to 1:10, use the ignition burner to ignite process natural gas and auxiliary air, and then increase the flow rate of process natural gas and auxiliary air, use The process burner heats the furnace to 780°C, then stops feeding the ignition natural gas and ignition air into the ignition burner, then feeds oxygen into the process burner, and increases the process natural gas flow rate at the same time, and controls the ratio of the newly increased natural gas flow rate and oxygen flow rate 1:1.8, heat the furnace to 1030°C, then reduce the flow of auxiliary air, increa...

Embodiment 2

[0073] Introduce ignition natural gas and ignition air into the ignition burner, and control the flow ratio of ignition natural gas and ignition air to 1:9.5, use the ignition burner to heat the furnace to 265 ° C, under the condition of stable combustion of the ignition burner, Introduce process natural gas and auxiliary air into the process burner, and control the flow ratio of process natural gas and auxiliary air to 1:9.5, use the ignition burner to ignite process natural gas and auxiliary air, and then increase the flow rate of process natural gas and auxiliary air, use The process burner heats the furnace to 840°C, then stops feeding the ignition gas and ignition air into the ignition burner, then feeds oxygen into the process burner, and increases the process natural gas flow rate at the same time to control the ratio of the newly increased natural gas flow rate and oxygen flow rate 1:2, heat the furnace to 1070°C, then reduce the flow of auxiliary air, increase the flow...

Embodiment 3

[0075] Introduce ignition natural gas and ignition air into the ignition burner, and control the flow ratio of ignition natural gas and ignition air to 1:5, use the ignition burner to heat the furnace to 212 ° C, under the condition of stable combustion of the ignition burner, Introduce process natural gas and auxiliary air into the process burner, and control the flow ratio of process natural gas and auxiliary air to 1:5, use the ignition burner to ignite process natural gas and auxiliary air, and then increase the flow rate of process natural gas and auxiliary air, use The process burner heats the furnace to 720°C, then stops feeding the ignition natural gas and ignition air into the ignition burner, then feeds oxygen into the process burner, and increases the process natural gas flow rate at the same time, controlling the newly increased natural gas flow rate and oxygen flow rate 1:2, heat the furnace to 1100°C, then reduce the flow of auxiliary air, increase the flow of oxy...

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Abstract

The invention discloses an ignition method of a water wall natural gas partial oxidation reforming furnace. The ignition method comprises the steps that firstly, ignition natural gas and ignition air are fed into an ignition burner so that the ignition natural gas and the ignition air can be ignited under the action of electrodes; secondly, technology natural gas and auxiliary air are fed into a technology burner so that the technology natural gas and the auxiliary air can be ignited through the ignition burner; thirdly, the flow of the fed technology natural gas and the fed auxiliary air is increased, and the ignition natural gas and the ignition air are stopped being fed into the ignition burner; fourthly, oxygen is fed into the technology burner, and meanwhile the flow of the fed technology natural gas is increased; fifthly, the flow of the fed oxygen is increased, and meanwhile the flow of the fed auxiliary air is reduced; sixthly, auxiliary air feeding is stopped, and meanwhile the flow of the oxygen and the technology natural gas is increased. By means of the ignition method, normal ignition of the water wall natural gas partial oxidation reforming furnace can be achieved.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, in particular, the invention relates to an ignition method of a water-cooled wall natural gas partial oxidation reformer. Background technique [0002] Before feeding into the natural gas partial oxidation reformer, it is necessary to heat up the furnace of the reformer to meet the heat load requirements of the reformer during feeding. In the partial oxidation technology of natural gas in the hot fireplace, because the reformer is built with refractory bricks with heat storage function, the heat loss is less, and it is easy to keep warm and easy to ignite. [0003] In the partial oxidation conversion technology of natural gas in the hot fireplace, the heating process of the furnace is generally carried out in three stages: the preheating burner, the heating burner and the process burner. During the ignition process, the burner needs to be replaced three times at the burner mouth. The ig...

Claims

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Application Information

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IPC IPC(8): F23Q13/02C01B3/24
Inventor 吴道洪王东方宋敏洁
Owner SHENWU TECH GRP CO LTD