SU1318783A1 - Method for producing reducing gas - Google Patents

Abstract

The conversion relates to the methods of high-temperature heating of gases in regenerative gas heating bodies, in particular, to methods of high-temperature non-catalytic conversion of methane, and can be used in metallurgy, energy and chemistry. The aim of the invention is to reduce the residual content of oxidizing agents. The essence of the method is that the process is carried out at a temperature of the upper layer of the packing gas in the course of gas 1500-1600 ° C and the temperature of the lower layer 900-950 ° C. The implementation of this method both will reduce the content of oxidants in the target product to 4-5% compared with 8-10% by known methods. (L from 00 00 with

Description

113

The invention relates to methods of high-temperature heating of gazrv in regenerative gas heaters, in particular to methods of high-temperature non-catalytic conversion of methane, and can be used in metallurgy, energy and chemistry.

The purpose of the invention is to reduce the residual content of oxidizing agents.

P p and M y p 1. The method is carried out on an experimental heat exchanger IVTAN. When the temperature of the upper layer is cardijdil600 s and the lower layer, the consumption of methane per m of packing is 0.03 kg / s, the consumption of steam per meter of packing is 0.034 kg / s, the flow rate of combustion products is 0, 77 kg / s, duration of periods of conversion and heating of 10 min, the composition of dry converted gas, vol.%: Hi 75.4; CO 22: CO 0,6; CH 2 water vapor contents 2 vol.%, Contact time 1.3 s, oxidant content (HJ, O + COj) 4 vol%.

Example 2. Method implemented

at the temperature of the upper layer of the nozzle 1500 ° С and the lower layer 900 ° С, the consumption of methane per 1 m of the nozzle is 0.024 kg / s, the flow of water vapor per

Compiled by N. Bukharova Editor I. Gorn Tehred A. Kravchuk Corrector S, Cherni

2496/31

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VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

32

I m nozzle 0,027 kg / s, the consumption of combustion products of 0.61 kg / Cf duration of the periods of conversion and heating of 10 minutes, the composition of the dry converted gas, about.O: H 76; WITH 18;

COj 2; CH, 4, the water vapor content is 3 vol%, the contact time is 2.3 s, the oxidizer content (HjO + СО-) is 5 vol%,

When the nozzle is heated to temperatures outside the specified limits, the content of oxidizing agents increases to 20-28% (with known methods, the content of oxidizing agents in the target product

8-10%).

Claims (1)

Invention Formula The method of producing reducing gas by steam reforming of hydrocarbons in a regenerative gas heater in a high-temperature inert packing layer, which is so that, in order to reduce the residual content of oxidants in the target product, the process is carried out at the top along the gas of the ISOO packing layer -ieOO C "temperature of the lower layer is 900-950 C.