# US 11,078,076 B1 · Process and device for converting hydrogen sulfide into hydrogen gas and sulfur

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- Number: US 11,078,076 B1
- Document ID: US11078076B1
- Status: Granted
- Kind: B1
- Application number: 17/038,203
- Filed: 2020-09-30
- Granted: 2021-08-03
- Earliest claimed: 2020-03-20
- Assignees: Standard Hydrogen Company, Inc.
- Applicants: Standard Hydrogen Company, Inc.
- Inventors: James Wasas; Mariavicenta Wasas
- Web page: https://patentgrep.com/patent/US11078076B1

## CPC

- C01B 3/04: by decomposition of inorganic compounds (reversible storage of hydrogen C01B3/0018)
- B01D 53/225: {Multiple stage diffusion}
- B01D 53/228: {characterised by specific membranes}
- B01D 53/229: {Integrated processes (Diffusion and at least one other process, e.g. adsorption, absorption)}
- B01D 53/32: by electrical effects other than those provided for in group B01D61/00
- B01D 69/02: characterised by their properties
- B01D 71/04: Glass
- B01D 71/36: Polytetrafluoroethylene
- B01J 6/008: {Pyrolysis reactions (of hydrocarbons C10G9/00)}
- B01J 7/00: Apparatus for generating gases (production of inert gas mixtures B01J19/14; for generating specific gases, see the relevant subclasses, e.g. C01B, C10J {; in "air bags" on vehicles B60R21/26; for starter gas F02C7/26; blasting cartridges for producing gas under pressure F42B3/04})
- B01J 8/009: {Membranes, e.g. feeding or removing reactants or products to or from the catalyst bed through a membrane}
- C01B 3/501: by diffusion
- C01B 3/503: characterised by membranes
- C01B 17/021: {Separation of sulfur from gases}
- C01B 17/0495: {by dissociation of hydrogen sulfide into the elements}
- B01D 2053/221: {Devices}
- B01D 2256/16: Hydrogen
- B01D 2257/30: Sulfur compounds
- B01D 2257/304: Hydrogen sulfide
- B01D 2259/806: Microwaves
- B01D 2325/24: Mechanical properties, e.g. strength
- B01J 2204/005: the outlet side being of particular interest
- B01J 2219/00141: Microwaves
- B01J 2219/2423: Separation means, e.g. membrane inside the reactor
- C01B 2203/041: In-situ membrane purification during hydrogen production
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS

## Abstract

A reactor for converting hydrogen sulfide into hydrogen gas and sulfur.

## Claims

### Claim 1

A reactor for the continuous conversion of hydrogen sulfide to hydrogen gas and sulfur in one or more optionally positively charged reactor chambers, each such reactor chamber having an outer wall with an inner surface defining an interior chamber, each such interior chamber including at least one heating element and at least one membrane, said reactor chamber having:
i. an inlet for introducing the hydrogen sulfide stream into the interior chamber;
ii. each heating element comprising one or more resistance wires or electromagnetic generators and disposed in the interior chamber to heat said hydrogen sulfide stream;
iii. each membrane being disposed in the reactor chamber, said membrane being permeable to hydrogen but impermeable to hydrogen sulfide, sulfur vapor and other gases that may be present in the hydrogen sulfide;
iv. each membrane having a membrane surface defining a flow passageway in communication with a first outlet and comprising a negatively charged conductor located within such flow passageway; and
v. an inner surface of the outer wall or one or more heat exchange condensers serving as a sulfur condenser inside the interior chamber, such inner surface directing condensed sulfur towards and into a second outlet.

### Claim 2 (depends on 1)

The reactor of claim 1, wherein approximately 99% of the hydrogen sulfide in the reactor is continuously converted to hydrogen gas and liquid sulfur.

### Claim 3 (depends on 1)

The reactor of claim 1, further comprising one or more sulfur condensers embodied as thermally conductive, and optionally electrically conductive, tubes.

### Claim 4 (depends on 1)

The reactor of claim 1, further comprising wherein the hydrogen permeable membrane is located within a heated area surrounding heating element, in which heated area the hydrogen sulfide is converted into hydrogen gas and liquid sulfur.

### Claim 5 (depends on 1)

The reactor of claim 1, further comprising a vacuum pump or other means to remove oxygen, methane, and other unwanted unreactive gases from the interior chamber.

### Claim 6 (depends on 1)

The reactor of claim 1, further comprising a covering with insulating and temperature controlling properties comprising interior heat exchange coils, such covering located at the outer wall.

### Claim 7 (depends on 1)

The reactor of claim 1, wherein the inner surface of the outer wall or one or more heat exchange condensers are positively charged.

### Claim 8 (depends on 1)

The reactor of claim 1, wherein each of the inner surface of the outer wall and the one or more heat exchange condensers are positively charged.