SUPERSULF- A PROCESS WITH INTERNAL COOLING AND HEATING REACTORS IN SUBDEWPOINT SULFUR RECOVERY AND TAIL GAS TREATING SYSTEMS

摘要

SuperSulf process refers to an innovative reactor design consisting of internal cooling and heating thermoplate exchangers where it is filled by the Claus type catalysts between plates in the SRU and hydrogenation catalysts in the tail gas unit. SuperSulf reactor consists of 3 reactor zones in the sulfur recovery which operates as a SubDewPoint process where the mode of operation are controlled by switching valves on the utilities streams high pressure steam and high quality water and steam where the first 2 zones operate as hot and cold and switches to cold and hot where the produced sulfur is condensed. The third zone operates as cold all the time where consists of the last sulfur condenser by producing Low pressure steam. The tail gas unit consists of 2 reactor zones of hydrogenation reactor and hydrolysis reactor with internal plate cooling then followed by the tail gas amine with a selective solvent. The thermal incineration system can meet less than 50 ppmv of SO2 and with caustic incineration less than 10 ppmv of SO2 resulting zero emission.

主权项

1. A process for the production of sulfur from sulfur compounds-containing acid gases streams, the process comprising the following 7 steps:
A—step 1) The process comprises a thermal stage (s) (reaction furnace stages) of the Claus Unit with air, enriched air or oxygen enrichment operation; B—step 2) The process comprises at least one catalytic stage containing Titanium catalyst to hydrolyze sulfur byproducts from the thermal stage and the Claus catalysts to perform the Claus reaction; C—step 3) The SuperSulf process comprises 3 reactor zones equipped with internal heating and internal cooling thermoplate exchangers and filled by the Claus catalysts between plates and these zones operate as a SubDewPoint process to achieve higher recovery where zone 1 and 2 mode of operation switches between hot and cold at least once a day; D—step 4) The process comprises motor operating switching valves to control these reactor zones for switching between high pressure boiling feed water and high pressure steam to hot or cold mode of operation for zone 1 and zone 2 and low pressure boiler feed water or low pressure condensate to zone 3 which is always cold; E—step 5) The process comprises tail gas treating unit that is consists of 2 zones reactors; hydrogenation section and hydrolysis reactor with internal cooling thermoplate exchanger, where between plates filled out with catalysts; F—step 6) The process comprises of combination of the SubDewPoint operation of the reactor zones consisting reactors with internal cooling and heating thermoplate exchangers filled by the Claus catalysts between plates to achieve highest possible sulfur recovery; G—step 7) The process comprises the incineration system without or with Caustic scrubber to achieve SO2 emission of less than 50 ppmv and less than 10 ppmv respectively.