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Product Overview
This 99% caustic soda flakes EPC project delivers integrated engineering solutions oriented toward large‑volume export‑grade solid alkali production. The scope covers process package design, core equipment supply, civil interface coordination, on‑site erection, system commissioning and on‑site operator training. Many overseas project owners face real‑world pain points: local engineering teams lack mature solid‑flake alkali experience, and purchasing evaporation, flaker and packaging units from multiple vendors often brings mismatched process parameters, unstable product purity and long trial‑run cycles. Our full‑range EPC service unifies the whole process chain from incoming liquid caustic soda to finished bagged flakes, helping clients steadily hit 99% product grade, shorten project lead time and reduce cross‑supplier coordination risks.
Technical Principle
Feed liquid caustic soda from upstream chlor‑alkali unit is sent into multi‑effect forced‑circulation evaporation system. Under vacuum condition, lye is continuously concentrated to high‑temperature molten sodium hydroxide. High‑purity molten alkali is accurately fed onto the surface of water‑cooled rotating flaking drum. Rapid heat exchange takes place between high‑temperature lye and internal cooling medium, forming solid alkali layer on drum outer wall. A heavy‑duty scraper peels solid material off into caustic soda flakes. Finished flakes go through closed conveying, temperature equalization and impurity screening before entering automatic weighing and bagging station. Secondary steam and condensate water are recycled for heat recovery to cut external steam consumption. DCS system keeps real‑time track of evaporator vacuum, molten alkali temperature, feeding flow and flaker rotating speed to maintain stable 99% product purity.
Main Features
Whole production line adopts fully closed material handling to minimize alkali mist escape and personnel exposure risk. Forced‑circulation evaporation structure adapts to fluctuation of incoming liquid caustic soda concentration. Flaking drum and alkali‑contact components adopt high‑grade alkali‑resistant special alloy to extend service life. Capacity can be flexibly adjusted to satisfy variable market demand for export‑order‑oriented production. Closed conveying plus fully‑automatic packaging lowers manual contact. Reserved interfaces support seamless docking with upstream chlor‑alkali liquid alkali unit and downstream warehouse logistics system. Multi‑layer safety interlocks are configured for over‑temperature, vacuum abnormality and material shortage.
Core Advantages
One‑stop EPC delivery eliminates parameter mismatch caused by scattered equipment procurement. Optimized heat recovery layout lowers steam and energy expenditure for long‑term plant operation. Stable flaking and post‑processing workflow guarantees consistent 99% purity, fully meeting international export commodity inspection standards. Complete site commissioning and hands‑on training help local operation teams achieve stable full‑load operation quickly. This solution fits both brand‑new solid alkali workshops and capacity expansion or performance upgrade of existing flake production lines. Engineering design follows international chemical industry norms, simplifying overseas project acceptance and safety audit procedures.
Core Components
Forced‑circulation multi‑effect evaporation system, molten alkali buffer & circulation unit, high‑efficiency caustic soda flaker assembly, circulating cooling water module, heavy‑duty scraper assembly, closed flake conveying chute, finished‑product screening unit, automatic weighing and bagging equipment, condensate heat recovery system, DCS distributed control system, alkali‑mist waste‑gas absorption unit, pressure relief and leakage monitoring safety assembly.
Application Fields
New‑build export‑oriented 99% caustic soda flakes manufacturing plant, capacity expansion and performance upgrade of existing solid alkali production lines, supporting solid alkali facility matched with ion‑membrane chlor‑alkali complex, salt chemical industrial park solid sodium hydroxide production unit, solid alkali project for overseas chemical investment, raw‑material supply base for detergent, metallurgy and rubber downstream industries.
Boasting 25 years of professional industry experience in production and supply, ZLN factory delivers premium,cost-effective chemical products with reliable quality. Worldwide exported to more than 50 countries, including Italy, USA, Saudi, Africa and other countries and some foreign companies are our agents locally. Equipped with fully automatic production systems and scientific modular production line design, we achieve stable output, high efficiency and low energy consumption while strictly complying with industrial standards. Different from ordinary manufacturers, ZLN provides flexible customized services tailored to diverse customer needs on product specifications, packaging and solutions. With direct factory pricing and optimized production processes, we help clients cut procurement costs and obtain high-quality, stable chemical supplies with comprehensive professional support.
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