Novel combined type hydrogen chloride synthetic furnace with byproduct of high-pressure steam

Abstract

The invention relates to a novel combined type hydrogen chloride synthetic furnace with a byproduct of high-pressure steam. The novel combined type hydrogen chloride synthetic furnace comprises a synthetic furnace and a cooler at the top of the synthetic furnace, wherein the synthetic furnace is divided into an upper section, a middle section and a lower section; each of the upper section and the lower section consists of a graphite cylinder and a steel shell sleeved outside the cylinder; and the middle section is the steel shell which is formed by a plurality of vertical steel condensation tubes in annular sealed matching. The novel combined type hydrogen chloride synthetic furnace provided by the invention has the following advantages that the middle section of the synthetic furnace is changed from an original structure comprising a steel shell and an inner graphite cylinder into a steel shell structure which is formed by the plurality of vertical steel condensation tubes in annular sealed matching, so that the pressure for generating steam is improved; and meanwhile, a flow guide structure is additionally arranged at a flange connection part between the upper section and the middle section, and a flow guide ring is arranged at the lower end surface of a graphite heat exchange block, so that hydrochloric acid is prevented from corroding the steel shell by spreading to a flange surface of a flange and then being in contact with the steel shell of the lower section of the cylinder, and the service life of the synthetic furnace is improved.

Description

technical field [0001] The invention relates to a synthesis furnace, in particular to a novel combined hydrogen chloride synthesis furnace which produces high-pressure steam by-product. Background technique [0002] The hydrogen chloride synthesis furnace is used to burn chlorine and hydrogen to produce hydrogen chloride gas. When chlorine gas and hydrogen are combusted, a large amount of heat of reaction is released, and the temperature in the central area of ​​the flame reaches above 2500 °C, and the temperature of the generated hydrogen chloride gas is above 2000 °C, that is, about 605KC of heat is released for every 1 kg of gaseous hydrogen chloride synthesized, which is quite considerable for utilization . [0003] At present, there are two types of hydrogen chloride synthesis furnaces on the market. The first type is a widely used all-graphite synthesis furnace, which is composed of a graphite inner cylinder and a steel outer wall, and is divided into a top section...

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Problems solved by technology

[0004] Due to the limitation of the compressive strength of the graphite cylinder and the connection strength between the cylinder and various pipes and components, the structure of the above-mentioned synthesis furnace produces low-pressure steam, and the utilization rate of heat energy is low. It is necessary to establish a separate user steam network, which has great limitations; at the same time, because the cylinder body of the cooling section and the cylinder outside the furnace are connected by flanges, the sealing effect of the area where the flange surface of the connection is in contact with the graphite is poor, and the condensed acid in the cooling section is easy to flow along the upper end surface of the flange and The graphite contact gap spreads to the outer cylinder at the lower end, causing the steel shell of the outer cylinder to corrode

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