SU1534280A2 - Method of utilizing the heat of furnace outgoing gases - Google Patents

Abstract

The invention relates to the utilization of heat from furnace gases and reduces the deposition of pyrocarbon on the heat exchange surfaces and the catalyst. The fuel and part of the flue gases are mixed in the mixer 5 and fed through the heater 3 to the catalytic reactor 4. The resulting converted gas mixture is partially fed to the mixer 5. The main part is burned in the furnace 1 in the air heated in the air preheater 2. 1 Il.

Description

The invention relates to the technology of utilization of heat from furnace gases, and is an improvement of the method according to the author. No. 1013726.

The purpose of the invention is to reduce the deposition of pyrocarbon on the heat exchange surfaces and the catalyst.

FIG. 1 is a diagram of the device illustrating the proposed method.

The scheme contains a furnace 1, an air heater 2, a heater 3, a catalytic reactor U and a mixer 5

The method is carried out as follows.

The original organic fuel and 20-50% of the exhaust gases are mixed in the mixer 5 and fed through the heater 3 to the catalytic reactor 4. Some of the converged gas mixture formed in the reactor is burned in the furnace 1 in air heated in the air heater 2, and the other part is in quantity. (6-8%) is sent to the mixer 5. Due to the fact that the converted mixture contains hydrogen, adding it to the initial mixture dramatically reduces the formation of pyrocarbon, resulting in a decrease in its deposition on the heat exchange surfaces of the preheater 3 and

on the catalyst of the reactor 4. This is spoI

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five

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five

thirty

Claims (1)

It increases the intensity of the u, .vu conversion processes to m-h ;, the additive is converted. gas in the amount of (6-8%) is chosen from those considerations that the converted mixture of gases of equilibrium composition contains about 30% hydrogen. And the addition of hydrogen to 2% dramatically reduces carbon deposition, but it does not have a significant effect on the conversion of natural gas. The ratio of the converted gas mixture to the original fuel in the implementation of the method of utilizing heat from the exhaust gases of furnaces according to the basic invention is about 6.5 / 1. Thus, to ensure that the hydrogen content in the mixture is sufficient to reduce carbon deposition, it is necessary to add the converted gas mixture in the amount (6-8%) of the total fuel consumption to the mixture of the initial fuel and combustion products. Invention Formula Heat recovery method of furnace exhaust gases according to auth. No. 1013726, characterized in that, in order to reduce the pyrolytic carbon deposition on the heat exchanging surfaces and the catalyst, 6-8% of the converted gas mixture is added to the fuel mixture with exhaust gases.