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The waste heat boiler used for claus device

A waste heat boiler and equipment technology, applied in steam boilers, fire tube steam boilers, water tube steam boilers, etc., can solve problems such as difficult control of thermal stress, and achieve the effect of simplifying equipment technology and piping system

Inactive Publication Date: 2010-09-15
UHDE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high temperature differences of the incoming process gases, attention must be paid to significant thermal stresses which are difficult to control in a single plant

Method used

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  • The waste heat boiler used for claus device
  • The waste heat boiler used for claus device
  • The waste heat boiler used for claus device

Examples

Experimental program
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Embodiment Construction

[0019] exist figure 1 In the Claus apparatus described in , hydrogen sulfide is converted to elemental sulfur. The basic structure of the plant comprises a cracking reactor 1 with a combustion chamber 2 , a waste heat boiler 3 connected to the gas outlet of the cracking reactor 1 and a catalyst stage 4 . The hydrogen sulphide-containing acid gas 5 is fed together with air 6 and fuel gas 7 into the combustion chamber 2 of the cracking reactor 1 which, in the present exemplary embodiment, contains a catalytic converter packing 8 in addition to the combustion chamber 2 . The process gas leaves the cracking reactor 1 at a temperature of about 1200°C and is cooled in the waste heat boiler 3 to a temperature below 170°C required for sulfur condensation. The condensed sulfur is separated. After separation of the sulfur, the cooled process gas 9 is heated and fed to the catalyst stage 4 in which the sulfur compounds are converted to elemental sulfur on a catalyst. Catalyst stage 4 ...

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Abstract

The invention relates to a waste-heat boiler (3) for a Claus plant, comprising a steam generation chamber that is surrounded by a pressure-proof jacket (14), a long tube bundle (18) of heat exchanger tubes that extend through the steam generation chamber and are inserted into tube sheets (19) at both ends, at least one additional tube bundle (20) of shorter heat exchanger tubes, which are likewise inserted into the tube sheets (19) at their outlet ends and open into an influx chamber (21) at their inlet ends, in addition to a head part (22) that is connected to the tube sheet (19) at the outlet end and is subdivided into sections. The long tube bundle (18) is traversed by a hot process gas that emerges from a combustion chamber (2). The influx chamber (21) is located inside the steam generation chamber and is exposed to a cooler process gas (10) from a catalyst stage (4) of the Claus plant. One tube bundle (18, 20) is allocated to each section of the head part (22). Devices for draining condensed sulphur are connected to the sections.

Description

technical field [0001] The invention relates to a waste heat boiler for a Claus plant. Background technique [0002] In a Claus plant, the hydrogen sulfide is converted to elemental sulfur which is condensed and separated in the liquid state by cooling the process gas stream. In its basic structure, a Claus plant comprises a combustion chamber, a waste heat boiler and at least one catalytic converter stage. The acid gas containing hydrogen sulfide is sent into the combustion chamber together with air and gas, and about 60-70% of hydrogen sulfide is converted into sulfur in the exothermic reaction. The process gas leaves the combustion chamber at a temperature of approximately 1200°C and is cooled to below 170°C in the waste heat boiler. After separation of the condensed sulfur, the process gas is heated again and fed to a catalyst stage, where the hydrogen sulfide still contained in the process gas is converted to elemental sulfur at operating temperatures below 300° C. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/04F22B1/18F28D7/16
CPCC01B17/0447F28D7/163Y02P20/129F22B1/18F22B11/04
Inventor 霍尔格·蒂勒尔特克劳斯·许普豪斯
Owner UHDE GMBH
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