Glass-lined Tank
Storage Tanks
1. Product Overview
The glass-lined storage tank is a storage vessel with a carbon steel body lined with a dense glass enamel (glass lining) coating on the inner surface. It consists of the tank body, heads, manhole, nozzles, supports and optional accessories (agitator, level gauge, thermometer, etc.), utilizing the excellent corrosion resistance of the glass lining to achieve safe storage of strongly acidic and alkaline corrosive materials.
Widely applicable to: chemical raw material storage, pharmaceutical intermediate storage, pesticide formulation storage, dye and coating industry raw material storage, fine chemical liquid storage, etc.
Equipment features: excellent resistance to strong acids and alkalis, smooth non-stick surface, wide temperature range (-5°C~200°C), lower cost compared to stainless steel, not suitable for thermal shock conditions.
2. Working Principle
Materials enter the tank body through the feed nozzle and are stored statically utilizing the tank volume. The glass lining serves as an isolation layer, completely separating the carbon steel body from corrosive materials to prevent base metal corrosion. For glass-lined storage tanks with agitators, the agitation system keeps stored materials uniform, preventing suspended solids from settling or layering. Level gauges display real-time liquid levels, and temperature sensors monitor material temperature. Insulation layers can be added externally when temperature retention is required.
3. System Classification
By Structural Form
| Type | Features | Application |
|---|---|---|
| Open flat cover | Top open or flat cover with flange connection | Atmospheric storage, manual operation or observation required |
| Closed welded | Tank body and head integrally welded | High sealing requirements, no material evaporation allowed |
| Closed flanged | Head and tank body connected by flange, detachable | Storage requiring periodic cleaning or maintenance |
By Application
| Type | Features | Application |
|---|---|---|
| Storage tank | Large volume, primarily for storage | Bulk raw material or finished product storage |
| Metering tank | Equipped with level gauge or weighing module | Precise metering for feeding |
| Buffer tank | Inlet/outlet design for easy transfer | Material transfer between process steps |
| Agitated storage tank | Equipped with agitator | Storage requiring prevention of settling or maintaining uniformity |
4. Detailed Technical Parameters
4.1 Glass Lining Properties
| Item | Specification |
|---|---|
| Lining thickness | 0.8～1.2mm |
| Temperature range | -5°C～200°C |
| Voltage test | 20kV high-frequency spark test, no breakdown |
| Surface hardness | Mohs hardness 6.0～6.5 |
| Impact resistance | Drop ball impact test per GB/T 7995 |
| Lining color | Blue (strong acid & high temp) / Dark blue (general) / Navy blue (strong alkali) / White (photochemical) |
4.2 Common Base Metal Materials
| Material | Application | Remarks |
|---|---|---|
| Q235B carbon steel | General conditions, glass lining as anti-corrosion layer | Most commonly used base metal |
| Q345R vessel steel | Conditions with certain pressure requirements | Manufactured per pressure vessel standards |
4.3 Typical Specification Table
| Effective Volume (L) | Design Pressure | Design Temp (°C) | Tank Diameter (mm) | Glass-lined Area (m²) |
|---|---|---|---|---|
| 100～300 | Atmospheric～0.25MPa | -5～200 | 600～800 | 1.5～3.0 |
| 500～1000 | Atmospheric～0.25MPa | -5～200 | 900～1100 | 4.0～6.5 |
| 2000～3000 | Atmospheric～0.25MPa | -5～200 | 1200～1500 | 8.0～12.0 |
| 5000～8000 | Atmospheric～0.25MPa | -5～200 | 1600～2000 | 15.0～22.0 |
| 10000～20000 | Atmospheric～0.25MPa | -5～200 | 2200～2800 | 25.0～45.0 |
| 30000～50000 | Atmospheric～0.25MPa | -5～200 | 3000～3600 | 50.0～80.0 |
Note: Actual configuration may vary based on process requirements, nozzle configuration, agitator requirements, etc. Customization available.
4.4 Design Conditions & Performance Indicators
| Parameter | Specification |
|---|---|
| Glass lining test | 20kV high-frequency spark test, no breakdown |
| Welding process | Per GB/T 150 requirements, welds ground before enameling |
| Support type | Lug support / Leg support / Skirt support |
| Surface treatment | Anti-rust paint on outer wall, optional insulation layer |
| Nozzle standard | HG/T 20592 or per customer requirements |
4.5 Electrical Parameters (for agitated configuration)
| Applicable Region | Voltage | Frequency |
|---|---|---|
| China/Russia/Central Asia | 380V | 50Hz |
| Middle East/Southeast Asia/Africa | 400V / 415V | 50Hz |
| South Korea | 380V | 60Hz |
| Americas (if required) | 440V / 480V | 60Hz |
Please specify local voltage and frequency when placing order.
5. Core Component Selection
| Component | Common Brands | Features & Application |
|---|---|---|
| Gear reducer (with agitator) | SEW (Germany), NORD (Germany), Guomao | Cycloidal: compact; Helical gear: low noise, high efficiency |
| Mechanical seal (with agitator) | John Crane, Burgmann, quality domestic | Glass-lined tanks commonly use mechanical seals with water flushing structure |
| Motor (with agitator) | ABB, Siemens, ABB flameproof | Standard IP55, Ex d IIC T4 for hazardous areas |
| Level gauge | Quality local brands | Magnetic flap level gauge / Radar level gauge / Glass tube level gauge |
| Thermometer | Quality local brands | Bimetallic thermometer / PT100 RTD sensor |
| Safety accessories | Shanghai Valve, Zhonghe Sufa | Breather valve / Safety valve / Vacuum valve (as needed) |
Customer brand preferences can be specified. For pre-owned equipment, availability depends on inventory.
6. Typical Application Fields
Chemical industry: Storage of strongly corrosive raw materials such as hydrochloric acid, sulfuric acid, organic acids
Pharmaceutical industry: API intermediate storage, acid and alkali solution storage
Pesticide industry: Pesticide active ingredient and formulation storage
Dye & coating: Dye intermediate, resin solution storage
Fine chemical: Storage of various corrosive chemical raw materials
7. Design Standards & Certifications
| Standard | Description |
|---|---|
| GB/T 25001-2010 | Glass-lined equipment technical conditions (China) |
| GB/T 7995-2005 | Test method for mechanical impact resistance of glass lining |
| GB/T 7997-2005 | Method for measuring glass lining thickness |
| GB/T 7998-2005 | Determination of corrosion resistance of glass lining to boiling hydrochloric acid |
| GB/T 150-2011 | Pressure vessels (applicable when pressurized) |
| ISO 9001:2015 | Quality management system |
| CE | Available upon request for international orders (PED 2014/68/EU) |
| EAC | Available upon request for Russia and Central Asia markets |
| GOST-R | Available upon request for Russian market |
8. Customizable Options
| Option | Details |
|---|---|
| Agitator | Frame type, anchor type, paddle type (with reducer, seal, motor) |
| Level measurement | Magnetic flap level gauge, radar level gauge, glass tube level gauge |
| Temperature measurement | Bimetallic thermometer, PT100 RTD sensor |
| Nozzle configuration | Feed inlet, discharge outlet, overflow port, vent, manhole, handhole, sight glass |
| Insulation | Rock wool / aluminum silicate insulation + stainless steel cladding |
| Safety accessories | Breather valve, safety valve, vacuum valve |
| Support type | Lug support, leg support, skirt support |
| Lining color | Blue, dark blue, navy blue, white (selected based on material properties) |
| Explosion-proof requirement | Explosion-proof motor, explosion-proof instruments (with agitator) |
9. Warranty Terms
| Equipment Status | Warranty Period | Warranty Scope |
|---|---|---|
| New equipment | 12 months | Tank glass lining, agitator system (if any), sealing system, electrical components |
| Refurbished equipment | 6 months | Tank glass lining, agitator system (if any), sealing system, electrical components |
| Pre-owned equipment (as-is supply) | 3 months | No additional damage to glass lining, main functional components |
Special note on the glass lining: Natural aging of glass lining during normal use within the warranty period is not covered. Damage to glass lining caused by improper use such as thermal shock (temperature difference exceeding 110°C), mechanical impact, or hard object scratching is not covered by warranty.
Final warranty terms are subject to contract. All orders include installation guidance and remote commissioning support.
10. Packaging & Delivery
| Item | Packaging Method |
|---|---|
| Tank body | Bare packaging with steel band fixation, flange face protection, glass lining impact protection |
| Agitator system (if any) | Wooden box packaging, internal shock absorption |
| Electrical components | Waterproof sealed packaging in wooden box |
| Accessories/fittings | Wooden box or carton packaging |
Container capacity estimate (for reference only, subject to actual configuration):
500L glass-lined tank: approximately 1×20'GP container
3000L glass-lined tank: approximately 1×40'OT container or bulk vessel
5000L and above: bulk vessel or flat rack container
Installation service: On-site installation guidance available. Technicians can be dispatched for large projects (travel and accommodation expenses borne by buyer).
11. Information Required for Quotation
To obtain an accurate quotation, please provide the following information:
Required effective volume or tank dimensions
Working pressure, working temperature (maximum/minimum)
Name of stored material, corrosiveness, viscosity, whether containing solid particles
Whether agitator is required
Level measurement method requirements
Whether insulation is required
Glass lining color requirement (determined by material acidity/alkalinity)
Local voltage and frequency (e.g., 380V/50Hz or 400V/50Hz)
Whether explosion-proof design is required (with agitator)
Equipment status preference: New / Refurbished / Pre-owned
Budget range and brand preference (if any)
Delivery terms: FOB/CIF/DDP
Destination port or delivery address (for freight calculation)