phos_chem Industry Basic Process Specifications and BOM Report

Generation Time: 2026-08-21T07:35:49.686Z

Generated By: DS-CONTENT-001 (Content Generator). Input: phos_chem_base.db (Recognition/Inspection/Optimization results have been merged).

1. Asset Overview

2. Process Specification Details

WPA Wet-Process Phosphoric Acid (Dihydrate Process)

The mainstream process for producing wet-process phosphoric acid by decomposing phosphate rock with sulfuric acid. Product P2O5 28-32% (extraction) is concentrated to 48-54%.

TPA Thermal Process Phosphoric Acid

Thermal process phosphoric acid (85% H3PO4) produced by combustion and hydration of yellow phosphorus. High purity, high energy consumption, used for high-end phosphates.

YP Yellow Phosphorus (Electric Furnace Process)

Yellow phosphorus is produced by high-temperature reduction of phosphate rock, silica, and coke in a three-phase electric furnace, with by-products of phosphorus slag and tail gas.

MAP Monoammonium Phosphate (MAP)

MAP fertilizer produced by neutralizing phosphoric acid with ammonia, via slurry process/tube reactor process. Product N-P2O5.

DAP Diammonium Phosphate (DAP)

DAP high-concentration compound fertilizer produced by pre-neutralization of phosphoric acid, reaction with ammonia in a tube reactor, and drum granulation.

PG Phosphogypsum Comprehensive Utilization

Routes for neutralizing, washing, stockpiling, and utilizing wet-process phosphoric acid by-product phosphogypsum in building materials/acid production.

STPP Sodium Tripolyphosphate (STPP)

STPP additive produced by neutralizing and polymerizing phosphoric acid. Spray drying + rotary polymerization are key steps.

DCP Feed-Grade Dicalcium Phosphate (DCP)

Feed-grade DCP produced by neutralizing and precipitating phosphoric acid with lime milk, followed by centrifugation and drying.

3. Basic BOM (Three-Level Hierarchy, by Family)

WPA

TPA

YP

MAP

DAP

PG

STPP

DCP

IV. Optimization Suggestions (DS-PROCESS-OPT-001)

• Ammonium Phosphate Neutralization: Temperature control point is marked (80-100°C), interlocking is recommended; Duration parameter is marked (30-60 min), cycle time optimization can be performed; Safety constraints are covered and can be incorporated into the HAZOP register.
• Pre-neutralization: Temperature control point is marked (110-120°C), interlocking is recommended; Safety constraints are covered and can be incorporated into the HAZOP register.
• Phosphogypsum Neutralization: Safety constraints are covered and can be incorporated into the HAZOP register.
• Orthophosphoric Acid Neutralization: Temperature control point is marked (40–90°C / 60-90°C / 60-100°C), interlocking is recommended; Safety constraints are covered and can be incorporated into the HAZOP register.
• Sulfuric Acid Extraction Reaction: Temperature control point is marked (75-85°C), interlocking is recommended; Duration parameter is marked (2-4 h), cycle time optimization can be performed; Safety constraints are covered and can be incorporated into the HAZOP register.
• Tubular Reaction Ammoniation: Temperature control point is marked (70-90°C), interlocking is recommended; Safety constraints are covered and can be incorporated into the HAZOP register.
• Neutralization Precipitation: Temperature control point is marked (40-50°C), interlocking is recommended; Safety constraints are covered and can be incorporated into the HAZOP register.