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Sulphonation plants, particularly those using falling film reactors for surfactant production, generate sodium sulfate (
) as a by-product from neutralization. This by-product, often in hydrated form (
or Glauber’s Salt), is recovered by crystallizing wastewater to achieve zero liquid discharge, ensuring environmental compliance while providing a saleable material for industries like detergents and textiles.
Key Aspects of Sulphonation Plant
Hydrate By-Product:
- Production Mechanism: Wastewater containing sodium sulfite and sodium sulfate from scrubber systems is treated. Through evaporation, water is removed, forcing the crystallization of (sodium sulfate decahydrate).
- Zero Liquid Discharge (ZLD): The process allows the plant to treat its own alkali wastewater (scrubber wastewater) on-site, producing a useful product rather than disposing of it.
- Properties & Handling: The byproduct is typically a white or translucent rhombohedral crystal (mirabilite). It is important to note that sodium sulfate can exist in an anhydrous form or as a decahydrate, which can decompose to andupon heating.
- Purification: The hydrated crystals are often removed from the saturated liquid using a separation step, such as a centrifuge, and can be further purified.
- Industrial Applications: The recovered Glauber's Salt is valuable in detergent manufacturing, textile dyeing, and paper pulping.
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Web results
sulphonation plant by product Na2SO4 hydrate
WEIXIAN (Nanjing) Science Technology co., ltd
https://www.njweixian.com › sulphonation-plant-by-pro...
WEIXIAN (Nanjing) Science Technology co., ltd
https://www.njweixian.com › sulphonation-plant-by-pro...
Crystal Na2SO4 hydrate will be produced by oxidizing the NaSO3 and Na2SO4, and evaporating water in the wastewater. Therefore, the plant can realize ZERO ...Read more
sulphonation plant by product crystal Na2SO4 hydrate
WEIXIAN (Nanjing) Science Technology co., ltd
https://www.njweixian.com › sulphonation-plant-by-pro...
WEIXIAN (Nanjing) Science Technology co., ltd
https://www.njweixian.com › sulphonation-plant-by-pro...
WEIXIAN is an engineering company specialized in supplying turnkey sulphonation/sulphation plant and it's technology, focusing on the R&D of LABSA, SLES, SLS, ...Read more
Sodium Sulphate Fouling
Klaren Technology
https://klarenbv.com › sodium-sulphate-fouling
Klaren Technology
https://klarenbv.com › sodium-sulphate-fouling
This article discusses sodium sulphate production methods other than natural sources, the fouling problem and probable proven solution.Read more
Web results
WEIXIAN Sulphonation Process Design: Unit 38 Waste Water ...
LinkedIn
https://www.linkedin.com › posts › nanjing-weixian-tech...
LinkedIn
https://www.linkedin.com › posts › nanjing-weixian-tech...
Then partial remaining hot air (100℃) further goes to Unit 38 to treat the wastewater coming from the scrubber. Crystal Na2SO4 hydrate will be produced by ...
Crystallizer
Unitop Aquacare Limited
https://unitopaquacare.com › crystallizer
Unitop Aquacare Limited
https://unitopaquacare.com › crystallizer
A Glauber Salt recovery plant is a facility designed to extract and recover Glauber's Salt (sodium sulfate decahydrate, Na2SO4·10H2O) from various sources.Read more
Sodium Sulfate - an overview
ScienceDirect.com
https://www.sciencedirect.com › chemical-engineering
ScienceDirect.com
https://www.sciencedirect.com › chemical-engineering
Sodium sulfate is generated as a waste or byproduct in many operations such as waste acid neutralization, ion exchange regeneration, flue-gas desulfurization, ...Read more
Development of Poly-Naphthalene Sulphonate Based ...
Iranian Journal of Chemistry and Chemical Engineering (IJCCE)
https://www.ijcce.ac.ir › ...
Iranian Journal of Chemistry and Chemical Engineering (IJCCE)
https://www.ijcce.ac.ir › ...
PDF
by N Khan2023Cited by 2 — ABSTRACT: In this research, Poly-Naphthalene Sulphonate (PNS) properties and working in concrete are enhanced to get the required workability and high ...Read more
18 pages
SODIUM SULPHATE
Kvic
https://www.kviconline.gov.in › pmegpweb › docs
Kvic
https://www.kviconline.gov.in › pmegpweb › docs
PDF
Sodium sulphate is the sodium salt of sulphuric acid. When anhydrous, it is a white crystalline solid, the decahydrate Na2SO4ꞏ10H2O has been known as Glauber's ...Read more
20 pages
Experimental study of the crystallization of sodium sulfate ...
ResearchGate
https://www.researchgate.net › publication › 26294594...
ResearchGate
https://www.researchgate.net › publication › 26294594...
Jun 7, 2014 — In this study, we use temperature monitoring and differential scanning calorimetry to detect and identify the crystallization of sodium sulfate ...Read more