How to install a turnkey rCB production line

A turnkey recovered carbon‑black (rCB) production line covers waste‑tire pretreatment, pyrolysis reactor, char cooling, pre‑purification, grinding‑classification, powder collection, storage‑packaging, environmental‑protection and automatic control systems. Under turnkey EPC mode, the supplier undertakes design, manufacturing, delivery, site installation, commissioning and operator training; the customer only provides site, utilities and site coordination. Based on practical project experience referenced from rcb‑mill.com, successful turnkey project implementation follows a clear multi‑phase workflow, from pre‑project definition through final hand‑over for commercial production.

Phase 1: Pre‑project definition & contract confirmation (before manufacturing)

1. Define core project specifications
   • Annual waste‑tire processing capacity, target qualified rCB fine‑powder output.
   • rCB product grades: rubber‑grade, masterbatch‑grade, coating‑grade or battery‑grade; lock D50, D97, ash, iron and volatile index requirements.
   • Confirm feedstock characteristics: passenger/truck tire proportion, expected char ash and tar level. Provide char sample testing for supplier process calibration.
   • Site boundary conditions: available power capacity, compressed‑air, cooling water, nitrogen supply, zoning and environmental‑protection local requirements.
2. Process layout & technical specification review
   • Review P&ID drawing, general‑layout drawing, civil‑foundation drawing, utility interface drawing, safety‑explosion‑proof scheme, dust‑collection and waste‑gas treatment design.
   • Clarify scope boundary: whether raw‑material warehouse, finished‑product silos, laboratory, wastewater treatment are included in turnkey scope.
   • Confirm FAT (Factory Acceptance Test) requirements, spare‑parts list, training scope, commissioning period and performance‑guarantee acceptance criteria.
3. Sign formal turnkey contract and complete local permitting (environmental impact assessment, safety assessment, fire permit, construction permit) before civil construction starts.

Phase 2: Civil‑works & site preparation (equipment delivery preparation)

1. Complete plant civil construction according to supplier‑provided foundation drawing: equipment foundations, anchor‑bolt embedded parts, load‑bearing ground for heavy equipment, installation access road, lifting space for large units (reactor, grinding host, silos).
2. Build utility infrastructure: high‑voltage power distribution station, cooling‑water circulation system, compressed‑air station, nitrogen generation system, waste‑gas‑treatment workshop, drainage network.
3. Divide functional zones: raw‑tire storage area, pretreatment workshop, pyrolysis zone, char deep‑processing workshop, finished‑product silo zone, laboratory, central control room, maintenance spare‑parts warehouse. Reserve maintenance space and fire‑escape channels.
4. Before equipment arrival: check foundation elevation, flatness, anchor‑bolt position, utility interface size, ground bearing capacity; clean installation area, plan temporary storage zone for containers and disassembled components.

Phase 3: Equipment manufacturing, shipping & site receiving

1. Supplier completes equipment fabrication and performs FAT in factory: mechanical inspection, motor rotation test, PLC logic simulation, check equipment material, ceramic lining quality, welding quality of pressure‑related components. Customer may witness FAT.
2. Containerized shipping: classify heavy host equipment, pipeline components, electrical cabinets, wearing‑parts, spare‑parts and documentation.
3. Site receiving & unpack inspection: check container integrity, cross‑check packing list, inspect for transportation damage; store precision components (classifier wheel, sensors, instrument parts) in dry indoor area. Keep all manuals, certificates, piping and electrical drawings properly filed.

Phase 4: On‑site installation work

Follow installation sequence: main equipment hoisting and positioning → mechanical alignment → piping installation → electrical‑instrument installation → grounding and safety protection.

1. Main‑equipment hoisting and leveling
   Hoist reactor, shredder, cooling screw, grinding‑classification host, cyclone separator, pulse dust collector, silos to foundation position. Perform rough and fine leveling, correct horizontal tolerance, tighten anchor‑bolts according to specified torque; ensure vibration‑sensitive grinding units meet strict leveling requirements.
2. Process piping installation
   Install material conveying pipelines, high‑temperature flue‑gas pipelines, cooling‑water pipes, compressed‑air / nitrogen pipelines. Strictly control welding quality for high‑temperature and negative‑pressure pipelines. Insulate high‑temperature pipelines to avoid cold‑spot tar condensation inside rCB processing lines. Support pipelines properly to eliminate additional stress on equipment flanges.
3. Electrical, instrument & control system installation
   Install high/low‑voltage cabinets, PLC/DCS central‑control system, motor cables, instrument sensors (temperature, pressure, differential‑pressure, flow, motor‑current transmitters). Complete full‑system static grounding, especially for powder‑processing units to eliminate static‑electricity risk of fine rCB powder. Wire according to drawing, mark every cable and signal line clearly.
4. Auxiliary and safety‑system installation
   Complete explosion‑proof pressure‑relief devices, inert‑gas protection system, fire‑alarm system, safety interlock signal wiring, emergency‑stop chain, dust‑explosion protection components.
5. Installation‑phase check: every sub‑section is inspected and signed off; correct mis‑alignment, leakage risk and wiring error before moving forward.

Phase 5: Multi‑stage commissioning (critical for turnkey hand‑over)

Commissioning follows strict sequence: single‑machine no‑load test → whole‑line no‑load linkage test → partial‑load material test → full‑load performance test run.

Step 1: Single‑machine no‑load test

Run each motor, fan, screw feeder, rotary valve, classifier wheel, shredder separately. Check rotation direction, noise, vibration, bearing temperature, operating current, lubrication condition. Resolve mechanical jamming and abnormal noise; each unit runs 2‑4 h no‑load and passes inspection.

Step 2: Whole‑line no‑load linkage commissioning

Start the complete line without feedstock. Verify automatic start‑stop sequence, interlock logic, emergency‑stop response, alarm trigger, HMI data display, sensor reading accuracy. Simulate fault conditions such as overload and high temperature to confirm safety interlock works correctly.

Step 3: Partial‑load feeding trial run

Input small quantity of waste‑tire feedstock, run pyrolysis and char deep‑processing step‑by‑step. Gradually increase load from 30 % → 60 % → 80 % of design capacity. Continuously sample pyrolysis char and finished rCB powder; test particle‑size distribution, ash, iron, volatile content. Tune key parameters: pyrolysis temperature‑residence‑time, pre‑crushing setting, feed rate for grinding system, classifier speed, air‑volume and recirculation load ratio. Eliminate common problems: material bridging, caking, pipeline deposition, over‑grinding, unstable PSD.

Step 4: Full‑load continuous performance test run

Run at rated design capacity continuously (typically 72‑168 h). Monitor throughput, fine‑powder yield, power consumption, product quality stability, emission‑gas index, safety‑system status. All indicators must meet the performance‑guarantee requirements defined in the turnkey contract.

Phase 6: Training, acceptance & project hand‑over

1. On‑site operator and maintenance training:
   Include normal startup‑shutdown procedure, parameter adjustment logic, common‑fault troubleshooting, wearing‑parts replacement, preventive‑maintenance schedule, safety operation specification, emergency‑response drill. Deliver SOP operation manuals, maintenance manuals, P&ID drawings, spare‑parts catalogue in electronic and hard‑copy versions.
2. Formal performance acceptance:
   Both parties witness full‑load test‑run data, lab test reports of rCB product, utility consumption records. Sign acceptance documents only when all contract performance indicators are satisfied.
3. Project hand‑over:
   Transfer complete documentation, hand‑over special tools and initial spare‑parts. Clarify after‑sales‑service boundary, remote‑support channel and on‑site service response mechanism. The project enters warranty‑period operation.

Phase 7: Post‑acceptance ramp‑up

After turnkey hand‑over, plant operators gradually stabilize long‑term continuous‑production; optimize raw‑material homogenization, preventive‑maintenance plan, laboratory quality‑control workflow. Achieve stable long‑term capacity utilization rate.

Key risks & common pitfalls for turnkey rCB line installation

1. Do not ignore raw‑char property before design. If supplier uses generic design without considering your actual char ash, tar and hardness, commissioning will face persistent caking, low fine‑powder yield and high wearing‑parts consumption.
2. Foundation and utility interface mismatch is the most frequent delay source. Customer must strictly follow supplier’s civil‑engineering requirements, do not modify foundation or utility interface arbitrarily on site.
3. Do not skip no‑load commissioning and jump directly to full‑load feeding; this will cause serious equipment damage and safety risk.
4. Turnkey delivery does not mean “zero‑customer‑work”. Customer needs to guarantee stable waste‑tire feedstock supply, qualified utility supply, trained operators and regular laboratory quality testing.
5. Confirm clearly in contract: whether pre‑purification, thermal devolatilization, grinding‑classification, inert‑gas safety system and laboratory equipment are included in turnkey scope, to avoid scope‑gap disputes.

As summarized from rcb‑mill.com industrial practice, installing a turnkey rCB production line goes through six major phases: project definition & contract, civil‑works preparation, equipment manufacturing & delivery, site mechanical‑electrical installation, multi‑stage commissioning, and acceptance & hand‑over. The core value of turnkey EPC is integrating the whole technical chain from tire pretreatment to finished rCB powder, but final success still depends on clear specification definition, strict foundation‑utility matching, step‑wise commissioning and qualified local operation team.