Sulfur Recovery Units & SRU Equipment
Discuss a complete SRU project or individual equipment for your refinery or chemical plant. Share your acid gas composition, flow range and site requirements so we can define the supply scope.
Ruichang supplies sulfur recovery equipment and undertakes SRU projects for refineries and chemical plants. Start with the acid gas composition, flow range and required scope: a replacement item, an equipment package or a complete unit.
For an existing SRU, include the equipment drawings, current operating restrictions and planned shutdown window. For a new installation, provide the feed data, utilities and site requirements so the process and equipment interfaces can be reviewed together.
Claus process and equipment overview
The Claus process converts hydrogen sulfide into elemental sulfur through thermal and catalytic stages, with heat recovery and sulfur condensation between them. Tail gas treatment depends on the selected process and the project requirements.
- The burner and reaction furnace form the thermal section; the waste heat boiler cools the process gas and recovers heat.
- Reheating, catalytic conversion and sulfur condensation recover further sulfur in the downstream stages.
- Tail gas treatment and incineration are configured around the recovery target and discharge requirements.
For the reactions and process sequence, read how a sulfur recovery unit works. For equipment duties and selection inputs, use the SRU equipment guide.
Sulfur Recovery Unit Equipment
Ruichang supplies individual SRU equipment and coordinated packages. The proposal defines the equipment included, its design basis and the interfaces with the rest of the plant. Review the equipment duties and project inputs before sending an enquiry.
Define your SRU project requirements
A proposal starts with the gas to be treated and the required result. Include the following information, together with any available process datasheets or drawings.
- Acid gas composition, including contaminants, plus minimum, normal and maximum flow.
- Required sulfur recovery and stack emission limits, with the applicable measurement basis.
- Available fuel, steam, power, cooling water and combustion-air conditions.
- Site location, plot space, transport limits and the preferred division of engineering and supply.
- For a replacement or revamp: existing equipment drawings, tie-in details and the shutdown window.
Ruichang SRU Project Case Study
Ruichang undertakes SRU engineering, procurement and construction work for petrochemical and coal chemical projects. The examples below identify the client, process or equipment supplied and the stated project capacity. Match the reference scope to the work your project requires.
Currently, the largest sulphur recovery unit in refinery project we have participated in has a capacity of 150,000 tons/year. Ruichang has the strength and ability to undertake SRU projects with higher annual production capacity. The following are examples of the successful SUR projects made by Ruichang.
Project 1: Sinopec Changling Branch 50000 tons/year sulfur recycled and tail gas treatment system project
The project is the sulfur recovery and tail gas treatment system for Sinopec Changling Branch. The annual production capacity is 50,000 tons. The SRU system uses acid gas burners, and the combustion medium is acid gas and fuel gas.
| Client Name | Burner Type | Medium | Order Date | Equipment and Supply Information |
|---|---|---|---|---|
| Sinopec Changling Branch | Acid gas burner | Acid gas & fuel gas | Jan 4th | Full set sulfur recycled and tail gas treatment system |
Project 2: 55,000 tons/year SRU EPC overall project in Shanxi
The project is an SRU EPC project independently undertaken by Ruichang. The design, procurement, construction, and trial operation of the project construction are all independently completed by the company’s engineering design team. The project client is Shanxi Tiefeng Chemical Co., Ltd., with an annual output of 55,000 tons.
| Client Name | Burner Type | Medium | Order Date | Equipment and Supply Information |
|---|---|---|---|---|
| Shanxi Tiefeng Chemical Co., Ltd. | RCFS-WG0000 | Tail gas & fuel gas | Jul 6th | SRU EPC whole process equipment |
Project 3: 10,000 tons/year sulfur recovery unit of Henan Kailun Chemical Co., Ltd.
The project adopts the “three-stage Claus + selective oxidation” process, and the total sulfur recovery rate reaches 99%. The process gas is reheated by medium pressure steam and a combined catalyst is used. The project started production in June 2019 and has been running steadily ever since.
| Client Name | Project Location | Acid Gas Composition（v%） | Scale |
|---|---|---|---|
| Henan Kailun Chemical Co., Ltd. | Henan | H2S 86.7, CS2 13.3 | 1100Nm3/h |
Project 4: Anyang Yingde Gas Co., Ltd. Syngas Project 5000 tons/year sulfur recovery unit
The project adopts “three-stage conversion + selective hydrogenation + selective oxidation” super-fine Claus process. There is no additional H2 supplementation in the sulfur recovery process, and the combined catalyst is used, and the total sulfur recovery rate is greater than or equal to 99.5%. The project was put into production in 2014 and has been operating in good condition.
| Client Name | Project Location | Acid Gas Composition（v%） | Scale |
|---|---|---|---|
| Anyang Yingde Gas Co., Ltd. | Anyang | H2S 30, CO2 55, CH3OH 1.0, N2 14 | 1200Nm3/h |
