ISO 9001 CERTIFIED · CONSULTANT APPROVED · EXPORTING SINCE 2005
TWO-STAGE PACKED BED TRAIN
AIR POLLUTION CONTROL · SCRUBBERS
FRP & PP/FRP wet scrubbers for acid, alkaline and odorous gases
Packed bed, cross-flow, impingement plate and venturi scrubbers, sized in ChemCAD against the actual inlet stream and built in FRP, PP/FRP and dual-laminate construction.
800+
Air pollution control systems installed
165,000
CMH largest scrubbing system
1998
First fully engineered packed bed system
BUILT TO BS EN 13121 · ASME RTP-1
01 — CONFIGURATIONS
Four scrubber types, chosen by the chemistry and the headroom.
The right configuration depends on gas solubility, particulate loading and how much height the plant can give you. We recommend one; we do not default to one.
TYPE 01
Vertical counter-current packed bed
Packed towers for soluble acid and alkaline gases. The workhorse for HCl, HF, HNO₃ and NH₃ duty.
TO 85,000 CMH
TYPE 02
Horizontal cross-flow packed bed
Low-headroom packed beds where a tower will not fit. Strong on H₂SO₄ mist.
TO 112,500 CMH
TYPE 03
Impingement plate (tray) tower
Tray towers for high-efficiency absorption where a packed bed would foul.
TO 42,000 CMH
TYPE 04
Venturi scrubber
Electrically actuated variable-throat designs for combined particulate and gas duty.
TO 165,000 CMH
02 — SPECIFICATION
The envelope, in numbers.
Ranges shown are what we have executed. Design capability extends further, and every unit is sized against the gas analysis, not the gas volume.
PARAMETER
RANGE / CAPABILITY
Gas flow rate
To 165,000 m³/h executed
Configurations
Counter-current · cross-flow · tray · venturi
Materials of construction
FRP · PP/FRP · PVC/FRP · PVDF/FRP · PPH
Resin systems
Isophthalic · bisphenol · vinyl ester
Stages
Single or multi-stage, acid / alkali / oxidising
Tower diameter
[confirm range]
Design temperature
[confirm range]
Design codes
BS EN 13121 · ASME RTP-1
Process simulation
ChemCAD, with recirculation liquor streams defined
Scope
Equipment · with blower & ducting · turnkey
Values in square brackets are placeholders for your engineering team to confirm. Every unit is sized against the actual duty.
03 — APPLICATIONS
What these units are used to scrub
Acid gases
HCl fume · HF · HNO₃ · H₂SO₄ mist · SO₂ · Cl₂
Alkaline & odour
NH₃ · amines · H₂S · mercaptans
Process sources
Reactor vents · glass-lined reactors · pickling lines · plating and anodising · battery formation
Industries
API and pharma · specialty chemicals · agrochemicals · metals · electrochemical
04 — HOW WE SIZE IT
Four inputs decide whether a scrubber meets its limit.
Gas analysis, not gas volume. Inlet concentration and solubility set the transfer units, which set bed height.
Liquid-to-gas ratio. Under-circulating saves pump power and fails the stack test. We fix it in simulation, not on site.
Resin against the real chemistry. Vinyl ester where the service argues for it, with the reasoning documented where it does not.
System resistance, then the fan. Static loss to ACGIH, then the blower off our own curve rather than a catalogue.
TO QUOTE, SEND US
Gas flow rate and temperature
Contaminant and inlet concentration
Statutory outlet limit
Available headroom and footprint
Utilities and tie-in points
Start an enquiry
Contaminant and inlet concentration
Statutory outlet limit
Available headroom and footprint
Utilities and tie-in points
05 — CONSTRUCTION
What goes into every unit
01
Corrosion barrier and structural laminate
A resin-rich inner barrier for chemical resistance, backed by a structural laminate sized to the governing code.
02
Thermoplastic liners where the chemistry demands
PP, PVC or PVDF dual-laminate construction for services FRP alone should not see.
03
Mist elimination
Chevron or mesh demisters sized to stop liquor carry-over to the stack.
04
Recirculation and dosing
Integral or separate sump, recirculation pumps and pH / ORP controlled dosing.
05
Access and inspection
Manholes, spray headers that can be pulled for cleaning, and sight glasses where useful.
REFERENCE INSTALLATION
54,000
CMH · TWO-STAGE PACKED BED
Non-ferrous metals smelter
Two-stage packed bed scrubbing system for a zinc smelting operation, delivered with an EPC partner.
06 — IN SERVICE
Units we have built and commissioned
SPECIALTY CHEMICALS · GUJARAT
API PLANT · TELANGANA
SCRUBBER AND STACK
IN FABRICATION · MANKOLI
07 — QUESTIONS
What engineers ask us first
These answers are also written for search. Each question is a query buyers type into Google, which is why the FAQ block sits on every equipment page.
What information do you need to size a scrubber?+
Gas flow and temperature, the contaminant and its inlet concentration, the outlet limit you need to meet, and the space available. With those four, an engineer can come back with a configuration and a budgetary figure.
Packed bed or venturi — which do I need?+
A packed bed is the efficient choice for soluble gases at low pressure drop. A venturi earns its higher energy cost when there is significant particulate alongside the gas, or a very high inlet loading.
Should the scrubber be FRP or polypropylene?+
FRP gives structural strength at larger sizes and higher temperatures. Thermoplastics suit specific chemistries. Dual-laminate construction gives you both, and is often the right answer for aggressive service.
Do you supply the blower, ducting and stack as well?+
Yes. Single-point responsibility means the scrubber, fan, ducting and stack are designed together, and the blower is selected off our own performance curves.
Can you fix an existing scrubber that is failing its limit?+
Usually. Most failures trace to liquor ratio, packing condition or a resin mismatch. Our service team can survey the unit and propose a retrofit.
ENQUIRY
Pick the equipment. We will send you the data sheet.
Choose the equipment you need. We will take three details, then send you the enquiry data sheet for that product — the one our engineers use to size and quote.
Already know what you need? Download data sheets directly
ENQUIRY DATA SHEET
Scrubbing systems
The sheet arrives by email immediately. Fill it in and send it back, and an engineer replies with a sized proposal.
RELATED EQUIPMENT
Bhavi Plast
FRP and dual-laminate process equipment, engineered, built, installed and maintained under one contract. Established 1977.
EQUIPMENT
APPLICATIONS
HCl fume scrubbing
Cl₂ and NH₃ scrubbing
H₂SO₄ mist removal
Flue gas desulphurisation
Pickling line exhaust
Solar PV and semiconductor exhaust
Cl₂ and NH₃ scrubbing
H₂SO₄ mist removal
Flue gas desulphurisation
Pickling line exhaust
Solar PV and semiconductor exhaust
CONTACT
603 Dev Corpora, Cadbury Junction,
Khopat, Thane (W) 400 601
Maharashtra, India
Plant — Mankoli, Bhiwandi
+91 22 4970 9140
mb@bhaviplast.com / jm@bhaviplast.com
Khopat, Thane (W) 400 601
Maharashtra, India
Plant — Mankoli, Bhiwandi
+91 22 4970 9140
mb@bhaviplast.com / jm@bhaviplast.com
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