High-Pole Spray Tank (HPST) - Factorio MOD Complete Introduction

1. Core Positioning

This MOD adds an industrial-grade fluid processing and pollution control core device—High-Pole Spray Tank (HPST)—to Factorio (compatible with mainstream expansion mods such as Space Exploration and Krastorio 2). Breaking the limitation of relying solely on trees for passive pollution absorption in the vanilla game, this device can handle hundreds of industrial fluids (including vanilla, SE-exclusive, and KR-exclusive liquids). It implements a differentiated pollution multiplier mechanism to achieve "clean water decontamination and graded pollution emission for hazardous liquids," adapting to pollution control needs from conventional industrial production to space colonization. It is an environmentally friendly industrial facility that balances practicality and mod compatibility.

2. Core Features

2.1 Full-Range Fluid Processing Capability (SE/KR Compatible)

The device supports processing over 100 types of industrial fluids, covering four major categories:
- Basic Industrial Fluids: Water, crude oil, various acid-base solutions, organic solvents, etc.;
- SE Mod Exclusives: Space water, contaminated space water, plasma stream/antimatter stream, and other special space liquids;
- KR Mod Exclusives: Biomethanol, dirty water, matter fluid, and other characteristic liquids;
- High-Hazard Industrial Fluids: Radioactive liquids (uranyl sulfate, spent fuel solution), rocket fuel, antimatter stream, etc.

2.2 Differentiated Pollution Control Logic

The pollution multiplier for fluid processing is designed hierarchically based on "hazard levels," balancing rationality and gameplay:
| Fluid Type | Pollution Multiplier Rule | Typical Examples |
|--------------------------|------------------------------------------|-----------------------------------|
| Clean Water Category | Negative (Active Pollution Reduction) | Water (-8), Space Water (-3), KR Mineral Water (-5) |
| Low-Hazard Fluids | 0-5 (Minor Pollution Increase) | Liquid Oxygen (0), Saline Water (1), Purified Liquid Air (0.3) |
| Medium-Hazard Fluids | 6-10 (Moderate Pollution Increase) | Effluent (6), Crude Oil (8), Acetic Acid (10) |
| High-Hazard Fluids | 11-20 (Severe Pollution Increase) | Sulfuric Acid (15), Hydrofluoric Acid (18), SE Bio-Sludge (12) |
| Extremely High-Hazard Fluids | 20+ (Extreme Pollution Increase, including radioactive/space-specific) | Spent Fuel Solution (35), Antimatter Stream (50), KR Matter Fluid (45) |

2.3 Industrial-Grade Equipment Attributes

• Unlock & Construction: Requires unlocking the "high-pole-spray-tank" technology (prerequisite: Oil Gathering), crafted with 30 Steel Plates, 1 Storage Tank, 5 Electric Motors, and 10 Pipes—aligning with the resource input logic of late-game industrial facilities;
• Basic Parameters: 250 health points, 3×3 placement space, 35kW power consumption, and 1 module slot (supports consumption/speed/pollution/quality enhancements) for modular production optimization;
• Fluid Compatibility: 1000-unit fluid tank capacity with north-south dual pipe connections, supporting high-flow fluid processing and compatible with conventional/space fluid transportation logic;
• Space Compatibility: If the Space Exploration mod is installed, the device can be directly deployed in space scenarios (se_allow_in_space = true), adapting to pollution control needs for space colonization.

2.4 Visual & Interaction Optimization

• Custom high-definition 128×128 icon, with entity model featuring double-layer textures (main body + shadow) that match the vanilla visual style;
• Supports fast replacement (belonging to the fluid incinerator replacement group) and circuit connections (4 sets of universal connectors), enabling integration into factory automation systems for linked control;
• Processing recipes are automatically generated and hidden (executed only internally by the device), with recipe icons overlaid with a flame marker for intuitive distinction of fluid processing types.

3. Usage Instructions

3.1 Unlock & Deployment

1. Research the "high-pole-spray-tank" technology (costs 5 Automation Science Packs, 3 Logistic Science Packs, 300 total science points, and 30 seconds of research time);
2. Locate the device in the "Smelting/Fluid Processing" category of the construction menu, place it, and connect it to power and fluid pipes (north or south direction);
3. Once powered on, the device automatically recognizes the connected fluid and executes the corresponding processing recipe (no manual operation required).

3.2 Core Working Mechanism

• The device features a built-in exclusive recipe category "high-pole-spray-tank," which automatically generates processing recipes for each supported fluid;
• Each recipe takes 1 second to complete, consuming 100 units of the corresponding fluid and triggering "pollution reduction/increase" effects based on the fluid type;
• Module Enhancement: Insert pollution modules to further amplify decontamination effects (e.g., higher pollution reduction multipliers for clean water) or speed modules to improve processing efficiency.

3.3 Applicable Scenarios

4. Compatibility

• Vanilla Compatibility: Fully compatible with vanilla Factorio, no conflict risks;
• Mod Compatibility: Deeply integrated with Space Exploration (SE) and Krastorio 2 (KR), supporting exclusive fluid processing and space deployment for both mods;
• Expansion Compatibility: Supports vanilla/mod expansions of the module system, circuit system, and fluid system, seamlessly integrating with other industrialization mods.

5. Core Value

1. Fills the gap of "active pollution control" in vanilla/modded Factorio, enabling refined pollution management throughout all stages from conventional industry to space colonization;
2. Differentiated pollution multiplier design adds strategy to fluid processing (prioritize clean water for decontamination, handle high-hazard fluids with caution);
3. Full-mod compatible fluid processing system that adapts to SE/KR's industrial logic without additional configuration, enhancing game immersion and gameplay richness.