Detergent & Bleach Industry Gas Detection Solutions: Nexisense Ensures Production Safety and Compliance

Detergent and bleach production involves various chemical raw materials and processes, such as sodium hypochlorite, calcium hypochlorite, peroxides, surfactants, and acid-base neutralization. These processes generate or release multiple hazardous gases, including chlorine (Cl₂), sulfur dioxide (SO₂), sulfur trioxide (SO₃), hydrogen sulfide (H₂S), ammonia (NH₃), hydrogen chloride (HCl), chlorine dioxide (ClO₂), and combustible gases (e.g., methane, hydrogen, volatile organic compounds). Leaks of strong oxidizers like Cl₂ may cause poisoning, corrosion, or explosions; even trace H₂S can induce unconsciousness; accumulated combustible gases can easily ignite, causing fire hazards.

According to the "Regulations on the Safety Management of Hazardous Chemicals" and GBZ 2.1 "Occupational Exposure Limits for Hazardous Factors in the Workplace," high-risk workshops must install fixed gas detection and alarm systems to achieve continuous monitoring, early warning, and interlocking control. Nexisense provides industrial-grade online detection solutions for the detergent and bleach industry, helping companies build reliable safety networks at key points such as raw material dosing areas, reaction tanks, packaging workshops, and exhaust treatment zones, ensuring personnel safety, production continuity, and regulatory compliance.

Gas Risks and Monitoring Necessity in Detergent & Bleach Production

• Chlorine-based bleaches: Decomposition or acidification of hypochlorites releases Cl₂/ClO₂. Concentrations above 0.5ppm irritate the respiratory system; above 10ppm can cause severe poisoning.

• Sulfur compounds: Sulfites or sulfuric processes produce SO₂/SO₃/H₂S. The occupational exposure limit for SO₂ is 5ppm; H₂S is hazardous even at 10ppm.

• Ammonia and combustible gases: Ammonia volatilizes from aqueous ammonia or organic additives, producing NH₃ (limit 20ppm) and combustible vapors, forming explosive mixtures.

• Environmental factors: High humidity, strong corrosion, and dust pose high demands on equipment durability.

Effective monitoring enables alarms before gas concentrations reach threshold levels, triggering ventilation, feed shutoff, or neutralizing sprays to significantly reduce accident probability and potential losses.

Selecting Gas Detection Equipment for Detergent & Bleach Industry

• Target gases and range: Cl₂/ClO₂: 0-10/20ppm; SO₂/H₂S/NH₃: 0-10/50/100ppm; combustible gases: 0-100% LEL.

• Sensor principles: Electrochemical (Cl₂, SO₂, NH₃, H₂S for high sensitivity); catalytic combustion/infrared (combustible gases, anti-poisoning).

• Explosion-proof and protection: Ex d IIC T6 Gb, aluminum/stainless steel housing, IP65+, resistant to acids and alkalis.

• Output and integration: 4-20mA/RS485 Modbus RTU, supporting long-distance transmission, wireless gateways, and environmental platforms.

• Additional features: Smart calibration, life reminders, multi-signal compatibility with PLC/DCS.

Nexisense Core Products

SGA-500 Series Online Fixed Gas Detectors
24V powered, plug-and-play, real-time LCD concentration display, automatic audible/visual alarm with relay output. Supports various gases and range customization. Key advantages include explosion-proof certification CNEx19.1790x, CE/ROHS, intrinsic and flameproof design for Zone 1/2, selectable aluminum/stainless steel housing resistant to Cl₂, HCl, and SO₂ corrosion, and multiple outputs (4-20mA, RS485, 0-5V) for PLC/DCS integration or wireless transmission.

Alarm Controllers & System Integration

Paired with the SGA-800 series controller, supports multi-channel centralized monitoring, unified power supply, and large-screen display of all points. Controller supports HJ212 protocol for environmental networking, multiple 220V/5A relays to interlock fans, valves, and neutralizing sprays. Extended products include SGA-600 portable inspection device for routine checks and SGA-900 multi-parameter/pollutant online monitoring system for emission compliance.

Installation Guidelines

• Heavy gases (Cl₂, ClO₂, SO₂, H₂S): Install 30-60cm below leak source to capture settling layer.

• Light gases (NH₃, H₂, combustible vapors): Install above or 30-60cm below highest point.

• Horizontal distance: Toxic ≤1m, combustible ≤7.5m.

• Oxygen: Top or bottom, recommended 30-60cm.

• Wiring: 3/4-core shielded cable; avoid corrosion and direct sunlight.

• Controller: Select 4/8/16 channels according to point number; flexible line/bus configuration.

Typical Applications

• Chlorine bleach workshop: Cl₂/ClO₂ monitoring in sodium hypochlorite preparation, interlocked with ventilation and neutralization.

• Sulfur-based bleach: SO₂/SO₃/H₂S real-time monitoring to prevent acid mist corrosion.

• Amine surfactant area: NH₃ leakage warning to protect operators.

• Exhaust treatment front end: Multi-parameter online monitoring to ensure compliant emissions.

  
  

FAQ

1. Which gases does the SGA-500 series monitor in detergent and bleach production? Recommended ranges? Covers Cl₂ (0-10/20ppm), ClO₂ (0-5/10ppm), SO₂/SO₃ (0-20/50ppm), H₂S (0-10/50ppm), NH₃ (0-50/100ppm), HCl (0-10/50ppm), and combustible gases (0-100% LEL). Multi-parameter configurations support coexisting gases in reactors/packaging areas.

2. Explosion-proof rating and materials? Suitable for chlorine corrosion? Certified CNEx19.1790x (Ex d IIC T6 Gb), CE/ROHS; aluminum standard, optional stainless steel, resistant to Cl₂/HCl/SO₂ acid mist. Ideal for Zone 1/2 hazardous areas.

3. PLC/DCS or environmental platform integration? Protocols? Supports 4-20mA, RS485 Modbus RTU, 0-5V; HJ212 compatible for environmental data upload and alarm logging. Seamless integration for wireless transmission and historical tracking.

4. Sensor lifespan and calibration? Effect of chlorine? Electrochemical (Cl₂/SO₂/NH₃/H₂S) 2-3 years, catalytic combustion/IR 3-5 years. Built-in drift diagnostics and life prediction; check every 6 months, zero/span calibration annually. Pre-filters recommended in chlorine environments.

5. Installation and wiring in bleach workshops? Heavy gases below leak source 30-60cm, horizontal ≤1m; shielded cable; avoid drainage/vent dead zones. Controller line/bus according to point number; install height considers breathing zone and gas settling.

6. Multi-level alarms and interlock? Supports 3 thresholds (pre-alarm/alarm/high alarm) with independent outputs: local ventilation, pump cutoff, full workshop spray and evacuation. 220V/5A relay groups, customizable logic ensures precise response.

7. Exhaust treatment and multi-parameter monitoring extensions? SGA-900 supports Cl₂/SO₂/NH₃/H₂S plus temp/humidity/flow, pre-treatment units, HJ212 environmental networking. SGA-600 portable for inspections; wireless modules for old workshops.

8. How to get tailored solutions, manuals, or case studies? Submit process details, target gases, workshop layout, and points; team replies within 24 hours with gas selection table. Full manuals, cases, and 3D models provided. Standard product quote 1-3 working days, multi-parameter/custom systems 5-10 days.

Conclusion: Nexisense Protects Every Meter of Detergent & Bleach Production Safety

Gas safety in detergent and bleach production impacts personnel health, company reputation, and regulatory compliance. Nexisense provides high-precision sensors, explosion-proof and corrosion-resistant design, and flexible system integration to reliably monitor Cl₂, sulfur gases, NH₃, and other high-risk processes. Suitable for new lines or retrofits, ensuring leak prevention and process safety optimization. Contact Nexisense for customized solutions, on-site assessment, and technical support. Production safety starts with accurate early warning.