What raw materials can Ruitu bromine extraction systems process?

Our bromine extraction systems are designed for seawater, bitter brine, salt lake brine, oilfield water, bromine-bearing industrial wastewater and concentrated brine from desalination plants. The process route is selected only after we review a laboratory analysis of your feed.

Do you supply single machines or complete plants?

Both. We supply individual machines such as salt washers, roller crushers, dryers, vibrating screens, belt conveyors and hot air furnaces, and we also deliver complete turnkey lines under an EPC contract.

What is included in your EPC service?

Water quality testing, site selection support, process design, project launch preparation, equipment manufacturing and procurement, packing and shipping, installation and commissioning, operator training, finished product production guidance, and output buy-back or decommissioning support where agreed.

Can your salt washing equipment produce food-grade salt?

Our salt washing machinery is used for both food-grade and chemical-grade salt. The achievable grade depends on the crude salt composition and the standard that applies in your market, so we design the washing, crushing, drying and screening stages around your target specification.

How do you support overseas installation?

Our engineers can be dispatched to site for installation and commissioning, train your operators, and stay involved until the line produces finished product at the designed daily capacity.

How do I start a project with Ruitu?

Send us your raw material analysis, target daily capacity, product specification and site information by email or phone. Our technicians will prepare a preliminary budget estimate and an economic benefit analysis based on your budget and expected output.

Custom Vacuum Drying Equipment Factory & Service

Integrated Process Portfolio

Engineered Equipment & Corrosion-Resistant Units

Factory-tested vacuum drying, industrial salt washing, and precision steel-lined flow management systems manufactured at our 28,000 m² heavy fabrication base.

Custom PP Lined Storage Tank Factory, Products

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Custom PTFE Lined Reducer Products, Service

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China PTFE-Lined Check Valve Factories, Service

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Custom PTFE-Lined Y-Strainer Factories, Factory

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China Water Washing Salt Equipment, Salt Purification Line

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China PTFE Lined Elbow Product, Products

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China PTFE Lined Pipe Products, Service

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China Professional Salt Drying Machinery Products, Service

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Global Industrial Status

Global Chemical Processing & Vacuum Thermal Dynamics

Addressing modern process requirements across aggressive halides, crystalline salt dehydration, and energy-efficient vacuum drying architectures.

Across modern industrial operations, thermal separation and moisture removal from aggressive salts (including refined sodium chloride, magnesium chloride flakes, and calcium chloride hydrates) demand precise heat management coupled with uncompromising corrosion defense. In conventional convective atmospheric dryers, processing temperature-sensitive crystals leads to product caking, high thermal oxidation, and massive parasitic power consumption. As global energy standards tighten and emission protocols enforce tighter lifecycle accountability, the shift toward custom vacuum drying equipment represents a mandatory technological transition.

2015

Established In Weifang

28,000 m²

Factory Manufacturing Area

< 0.05%

Residual Moisture Yield

100%

In-House Quality Verification

Low-Temperature Kinetic Dehydration

By dropping interior absolute pressures down to sub-atmospheric operational thresholds (5 to 50 mbar), our vacuum dryers drop water boiling points below 45°C. This eliminates thermal degradation in sensitive compounds while slashing primary energy consumption up to 38% compared to direct-fired systems.

Halogen-Grade Metallurgy & Linings

Operating inside saturated brine, chlorine, and bromine environments rapidly corrodes standard stainless steels. We integrate virgin isostatic PTFE linings, premium virgin PP layers, and titanium-clad interior contact areas to guarantee multi-decade equipment uptime under continuous acidic attack.

Hermetic Vapor Recovery Systems

Solvent-laden or halogenated effluent streams are contained in sealed closed loops. Condensers fitted with lined heat exchangers rapidly strip volatile vapors, preventing fugitive airborne emissions while facilitating downstream closed-loop byproduct reclamation and zero-liquid discharge targets.

Turnkey Execution

Single-Source EPC Delivery: Brine Analysis to Packaged Product

Eliminating interface risks through complete process ownership: research, pressure vessel fabrication, lined piping, automation, and full plant commissioning.

Stage 01: Resource Assaying

Our engineering starts in the lab. We characterize mineral brine density, chloride/sulfate balances, heavy metal contamination, and physical particle metrics to engineer thermodynamic flowsheets customized to your exact feed stream.

Stage 02: In-House Fabrication

Spanning 28,000 m², our workshops fabricate pressure-rated drying bodies, carbon steel housings lined with PTFE, screw conveyor feed drives, and multi-deck vibratory screens under strict ISO 9001 and pressure vessel codes.

Stage 03: Field Erection & Start-Up

We deploy senior chemical process engineers overseas to coordinate rig placement, piping tie-ins, distributed control system (DCS) integration, and process start-up until target yield and purity curves are attained.

Stage 04: Training & Product Buy-Back

Beyond hand-over documentation and staff training, Ruitu offers commercial buy-back models for refined output and lifecycle decommissioning assistance, shielding our clients' return on capital.

Applied Engineering

Engineered Operational Applications

Configured for harsh operating parameters where standard machinery fails from chemical corrosion or crystallizer clogging.

Refined Sodium Chloride Processing

Seamlessly integrates into water-washing and hydro-cyclone classification trains. Takes centrifuged moist salt cakes (2-4% H2O) down to less than 0.05% moisture while safeguarding cubic crystal structure and avoiding thermal yellowing.

Calcium Chloride Flaking & Prilling

Handles the extreme hygroscopic drying challenges of calcium-salt waste streams. High-temperature hot air furnaces and controlled-atmosphere vacuum drying produce anhydrous, 74% dihydrate, or 94% white granular products.

Magnesium Chloride Crystallization

Specialized evaporative vacuum crystallization that transforms bitter bittern and salt-lake mother liquors into industrial-grade white flakes, minimizing hydrolytic decomposition into magnesium hydroxychloride.

Bromine Derivation & Recovery

Engineered for blowing-out towers, acid-process reaction columns, and condensable halogen collection circuits where zero air leakage and total resistance to wet elemental bromine vapors are non-negotiable.

Compliance & Quality

Global Standards Compliance & Localized Engineering

Meeting international pressure, mechanical, and food-grade hygiene standards across the Middle East, Southeast Asia, South America, and Europe.

Pressure Vessel Certifications

Vacuum chambers, jacketed heat-transfer walls, and flash accumulators are constructed and verified in compliance with ASME Section VIII Div 1, PED 2014/68/EU, and GB150 codes, complete with radiographic testing and full hydrostatic records.

Food & Pharmaceutical Hygiene

For edible vacuum-salt processing lines, all internal product contact surfaces are polished up to Ra ≤ 0.4 μm. Polymeric linings use FDA 21 CFR 177.1550-certified PTFE resins, preventing batch leaching or micro-particulate contamination.

Explosion-Proof (ATEX / IECEx)

Where processing dry salt dust or operating around volatile extraction zones, our integrated automation cabinets, geared motors, pneumatic butterfly controls, and sensor arrays meet ATEX Zone 21/22 and IECEx safety standards.

Engineering Roadmap

Technology Roadmap: The Future of Vacuum Drying

Transitioning mineral salt processing into an automated, carbon-lean, digitally regulated industry.

MVR Vapor Recompression Integration

Coupling Mechanical Vapor Recompression (MVR) with our vacuum drying beds enables 100% recycling of latent evaporation heat, reducing live steam demand down to near-zero during continuous drying cycles.

AI Predictive Moisture Control

Implementing embedded NIR (Near-Infrared) spectrometry inside drying housings, paired with neural network algorithms, dynamically tunes dryer agitation speeds, residence durations, and vacuum pressure to prevent over-drying.

Zero-Emission Halogen Containment

Advancing ultra-tight fluoropolymer thermal fusion processes for our steel-lined valves, reducers, and process vessels, ensuring zero micro-channel permeation under extreme thermocycling (-20°C to +180°C).

Technical Clarifications

Frequently Asked Questions

Direct answers on equipment sizing, materials selection, plant revamps, and overseas technical support.

What parameters are needed to custom-size a vacuum drying unit for salt or chemicals?

To provide an accurate technical and thermal sizing proposal, we require: (1) Initial moisture percentage and target final residual moisture, (2) Detailed chemical assay including chloride, sulfate, and insolubles content, (3) Target daily or hourly metric tonnage throughput, (4) Available heating utilities on site (saturated steam pressure, thermal oil temperature, or natural gas options), and (5) Local site elevation and electrical grid parameters (e.g., 380V/440V, 50/60Hz).

Why choose PTFE/PP lined equipment instead of standard 316L stainless steel for brine?

While austenitic stainless steels like 316L perform adequately in dilute, neutral water, hot concentrated chloride salts and acidic bromine solutions induce catastrophic pitting corrosion and stress-corrosion cracking (SCC). Our carbon-steel bodies lined with virgin PTFE or seamless thick-wall PP supply the mechanical pressure-bearing strength of industrial carbon steel combined with complete chemical inertness across all halogens and acids at a fraction of the cost of Hastelloy or pure Titanium alloys.

Can Ruitu revamp existing atmospheric drying lines into vacuum systems?

Yes. We frequently execute brownfield retrofits. Our team conducts on-site laser scanning and mass-energy balance audits, integrating vacuum crystallizers, cyclone separators, vacuum pump skids, and lined pipe runs directly into your existing infrastructure while preserving working crushers and bucket elevators where feasible.

How are vacuum-dried products cooled and transferred without absorbing ambient moisture?

Extremely hygroscopic salts, such as calcium chloride and magnesium chloride, rapidly absorb moisture if discharged directly into ambient air. Our plants integrate sealed, jacketed screw conveyors and rotary vacuum discharge valves that drop product temperatures under a dry-nitrogen blanket or de-humidified zone before entering automated, hermetic bagging lines.

What installation and commissioning warranties are provided with turnkey plants?

Every turnkey plant comes backed by our lifecycle EPC guarantee. We assign senior process specialists to your site for complete installation supervision, pressure testing, dry mechanical testing, wet commissioning, and operator training until target commercial outputs are attained. Core pressure vessels, PTFE lined components, and mechanical drive trains are protected under comprehensive 12 to 24-month warranties.

Material Handling & Control