Pyrolysis Plant — Zone Area Allocation
A four-zone area allocation guide for a tyre pyrolysis plant layout — showing recommended percentage allocation of total plot area across processing, storage, administration, and movement/safety zones with key sub-areas.
| Zone | Area Share | Key Sub-Areas |
|---|---|---|
| Processing & Operations | 40% | Reactor zone, condensation, gas handling, emission control, pre-processing |
| Storage & Logistics | 30% | Tyre yard, oil tanks, carbon black storage, steel scrap, dispatch |
| Administrative & Utility | 10% | Office, control room, weighbridge, staff amenities, electrical rooms |
| Movement, Safety & Expansion | 20% | Roads, fire corridors, emergency zones, green belt, expansion space |
Beyond definitions
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How to read this table
- Each row is one functional zone; Area Share is the recommended percentage of total plot area; Key Sub-Areas lists the specific facilities within that zone.
- These percentages are guidelines — actual allocation varies with plot shape, equipment configuration, and site-specific requirements.
- Processing Zone and Storage Zone together represent 70% of the plot — the 30% balance for administration, movement, and safety is a minimum, not a maximum.
About this table
Once the total plot area for a tyre pyrolysis plant is determined, the next question is how to allocate that area across the plant's functional zones. This four-zone allocation guide gives recommended percentages and the key sub-areas within each zone — a practical starting point for facility planners and site designers working on pyrolysis plant layout.
The Processing and Operations Zone at 40% of total plot area is the largest allocation because it houses all the core pyrolysis equipment: the reactor(s), the condensation train, gas handling system, emission control units, and the feedstock pre-processing line (shredder, de-beader). This zone has the highest infrastructure requirements — heavy equipment foundations, utility connections, ventilation, and reactor safety systems all concentrate here. Adequate space within this zone is critical for reactor maintenance access, which requires clearance around reactor flanges, piping connections, and control panels. Storage and Logistics at 30% covers tyre feedstock yard (covered or uncovered), product oil storage tanks (in a lined bunded area), carbon black storage, steel scrap bay, and vehicle dispatch loading area. Oil tank storage must be in a fire-separated bunded enclosure — the bund must contain the full volume of the largest tank plus 10% for a fire suppression water surge.
Administrative and Utility at 10% covers the control room (central to process, preferably adjacent but separated from the reactor zone), office building, weighbridge, staff amenities, and electrical transformer and switchgear rooms. Movement, Safety and Expansion at 20% covers vehicle circulation roads, fire tender access corridors (clear of obstruction at all times), the mandatory green belt (typically 5% of plot area in this allocation), emergency muster areas, and reserved expansion space. Reserving expansion space even at the initial plant design stage prevents the common scenario where a growing operator has to retrofit additional reactors into a site with no room for them.
Key insights
- Processing zone at 40% requires heavy equipment foundations, ventilation, and reactor safety systems — cramping this zone to save land creates maintenance access problems that increase downtime over the plant's operating life.
- Oil tank bunding within the Storage Zone must contain the full volume of the largest tank plus 10% for fire suppression surge — this bunded area can be significant in size for larger oil storage.
- Reserving expansion space in the Movement and Safety zone from the beginning prevents the most common long-term constraint for growing pyrolysis operators — physical inability to add reactors to an already-tight layout.
- Control room placement at the boundary of Administrative and Processing zones is the optimal position — close enough for operators to respond quickly to process alarms, separated enough to protect staff from routine process emissions.
Methodology & sources
Zone allocation percentages are based on standard tyre pyrolysis plant design practice as of 2024. Actual allocation depends on plot shape, reactor configuration, throughput capacity, and SPCB consent conditions. Oil tank bunding requirements should be confirmed with the state Petroleum and Explosives Safety Organisation (PESO) and the fire authority for the specific location.
Related data tables
Conceptual Plant Layout — Zone Planning
A seven-zone conceptual plant layout for a tyre recycling facility — covering reception and sorting, pre-treatment, dirty and clean processing, storage, utilities, and administration — with the key functions and requirements for each zone.
Plant Area Requirements by Reactor Type
Minimum plot area requirements for tyre pyrolysis plants by reactor type — ABAP Batch reactors (3,000–4,000 m² base plus increments per additional reactor) and Continuous process plants (7,000 m² minimum for 60+ TPD scale).
Site Selection — Zonal Requirements
Seven mandatory site selection parameters for a tyre pyrolysis plant in India — industrial zone classification, habitation and water body setback distances, eco-sensitive zone buffers, road access requirements, green belt minimum, and fire access route.