Sulfur recovery unit and process

Sulfur recovery unit and process

  • CN 105,764,844 A
  • Filed: 11/07/2014
  • Published: 07/13/2016
  • Est. Priority Date: 11/08/2013
  • Status: Active Application
First Claim
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1. a sulfur recovery unit, is used for processing sour gas raw material to reclaim elemental sulfur, and described sulfur recovery unit includes:

  • Reacting furnace, described reacting furnace is configured for combustion acid gas raw material, source of oxygen and fuel gas to produce furnace gas stream, described reacting furnace includes main burner and reative cell, described main burner is configured for described sour gas raw material, described source of oxygen and described fuel gas heating to minimum response temperatureWherein said sour gas raw material comprises hydrogen sulfide,Wherein hydrogen sulfide described in described reative cell is converted into elemental sulfur;

    The waste heat boiler being connected with described reacting furnace in the way of fluid communication, described waste heat boiler is configured for catching heat energy from described air-flow of coming out of the stove to produce cooling air-flow, the heat energy wherein caught from described air-flow of coming out of the stove can heat raw water effectively to produce water vapourThe condenser that is connected with described waste heat boiler in the way of fluid communication, described condenser arrangement for being used for making described cooling condensation to produce waste gas stream and condensing gas stream,Wherein said waste gas stream comprises sulfur-containing impurities, andWherein said condensing gas stream comprises elemental sulfur;

    The thermal oxidizer being connected with described condenser in the way of fluid communication, described thermal oxidizer is configured for burner exhaust stream, source of oxygen and fuel gas to produce the air-flow rich in sulfur dioxide,Wherein can effectively carry out the conversion to sulfur dioxide of the described sulfur-containing impurities in described thermal oxidizer,The wherein said air-flow rich in sulfur dioxide comprises sulfur dioxide;

    AndThe sulfur dioxide washing unit being connected with described thermal oxidizer in the way of fluid communication, described sulfur dioxide washing cell location be for from described rich in the air-flow of sulfur dioxide being removed a certain amount of sulfur dioxide to produce effluent stream and recirculated air, described recirculated air comprises a certain amount of sulfur dioxideWherein said recirculated air is recirculated in described reacting furnace.

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