Equipment for specialty chemical process duties
Specialty chemical production involves distillation, absorption, liquid–liquid extraction (LLE), liquid–liquid separation and mist-removal duties. Evergreen supplies equipment and internals for new projects and revamps, with selection based on the chemistry and operating requirements of each application.
Equipment design and material selection consider fluid composition, concentration, temperature, corrosion, fouling and product purity. Engineering support can include hydraulic design, assessment of existing internals, revamp recommendations, and installation supervision, with the scope agreed to suit project requirements.
Process performance guarantees can be offered for selected applications, subject to agreed feed characteristics, operating conditions, and performance criteria.
Selected specialty chemical applications
Chlor-Alkali — Chlorine & Hydrogen Mist Removal
Mist removal from wet chlorine, dry chlorine and hydrogen streams in chlor-alkali plants. Mist eliminator design and materials are selected to suit the gas composition, moisture content, operating conditions and required liquid carry-over limits.
- Mist eliminators for wet chlorine
- Mist eliminators for dry chlorine
- Mist eliminators for hydrogen
Acid Absorption & Recovery
Packings and column internals for acid absorption, scrubbing and recovery duties, including hydrochloric and hydrofluoric acid services. Mist eliminators can be selected for entrained acid droplets. Construction materials and mist-eliminator media are evaluated for the specific acid composition, concentration and temperature; glass-fibre media are not suitable for hydrofluoric acid service. Polypropylene media can be offered as an alternative, subject to suitability for the operating conditions.
- EVERPACK packings
- EVERGREEN column internals
- Service-specific mist eliminators
Hydrogen Peroxide — Anthraquinone Process
Mist removal from oxidation tower vents, liquid–liquid extraction (LLE) of hydrogen peroxide from the working solution into water, coalescence for phase separation and structured packing for vacuum concentration. Trays or packings can be used in extraction columns to promote contact between the two liquid phases. Equipment and materials are selected for the process arrangement, fluid composition, peroxide concentration and operating conditions.
- EVERMESH mist eliminators
- EVERFRAC trays
- EVERPACK packings
- EVERSEP coalescers
Agrochemicals
Solvent recovery and intermediate purification through distillation, with coalescers for liquid–liquid separation where applicable. Trays, packings and internals are selected for the separation duty, considering corrosion, fouling and the properties of the process fluids.
- EVERFRAC trays
- EVERPACK packings
- EVERSEP coalescers
- EVERGREEN column internals
Flavours & Fragrances
Distillation and purification of natural and synthetic flavour and fragrance compounds. For heat-sensitive products, structured packings, including wire gauze structured packings, and suitable column internals support vacuum operation with low pressure drop.
- EVERPACK structured packings
- EVERGREEN column internals
Fine Chemicals — Distillation & Purification
Trays, packings — including wire gauze structured packings — and column internals for solvent recovery, fractionation and product purification. Internals for reactive-distillation duties can be evaluated according to reaction requirements, residence time and mass-transfer needs.
- EVERFRAC trays
- EVERPACK packings
- EVERGREEN column internals
Product range