Distillation units
Recovery of solvents, solvent based products and heavily contaminated Waste water
D.W.RENZMANN
Apparatebau signals of these cells provide important process information and permit
GmbH is a medium-sized company a fully automated distillation process.
headquartered in the German State RENZMANN distillation units are used wherever heavily contaminaof Rhineland-Palatinate, near the ted media must be separated into their solid and liquid componenNahe River that has given its name ts. Such media include, for instance, contaminated solvents used in
to a famous wine growing region. the chemical industry, e.g. by ink, paint and varnish manufacturers.
RENZMANN has been developing RENZMANN‘s flagship products in this area are the ROTOmaX diand manufacturing industrial washing stillation units, which offer maximum efficiency in the treatment and
machines and distillation units for more recovery of solvents, solvent-based products and heavily contathan 40 years and serves customers in minated waste water. Distillation is a fully automated process that
the printing industry and in the ink, paint does not require supervision. The only waste produced is a small
and varnish industry. The company‘s quantity of highly viscous residue that can be disposed of inexpencore competency is the removal of stub- sively, while nearly all of the solvent or water is recovered and may
born residues and the distillation of the be reused. The high recovery rate, the supply of clean washing
flammable organic solvents and alkaline agent with minimal transport requirements for the highly reduced
media used in industrial washing ma- quantity of dischargeable residue are important factors that contribute to active environmental protection.
chines.
ROTOmaX units have a steam-heated boiler floor that ensures
In addition to developing, designing, ma- efficient heating, optimal heat transfer, and a consistently high
nufacturing and selling machines and heat output irrespective of the filling level. An ATEX-certified
equipment, the company also offers its rotating scraper system discharges the residue and effectively
customers consulting and other services. cleans the heating surface on the boiler floor. The filling level
is monitored by external load cells, eliminating the need for leRENZMANN focuses on
vel sensors inside the boiler that might become sticky through
contact with the solvent.
– safety at work and the protection
In addition to separating the liquid and solid components of variof equipment operators,
ous media, ROTOmaX units can be equipped with a fractionating
– environmental protection,
column for the downstream separation of liquids into their various
– profitable solutions, and
components.
– high availability and durability
Another very interesting core competency of D.W.RENZMANN
of equipment.
is a special, proven method for debinding mass-produced items
D.W.RENZMANN is certified according as part of the metal injection molding process. What makes
to the European ATEX directive and RENZMANN‘s debinding technology special is the fact that it does
leads the market in the aforementioned not produce emissions and is therefore especially eco-friendly.
segments. The company has an ATEXcertified quality assurance system and In summing up, D.W. RENZMANN offers the following
consistently implements all relevant products and services:
legal requirements. D.W.RENZMANN • Treatment and recovery systems for contaminated solvents,
water-based cleaners and flushing water
supplies category 1 equipment with a
type examination according to ATEX • Washing machines for paint mixing containers, transport
containers, barrels, buckets etc.
and thereby protects customers from
any liability due to unsuitable or pro- • Debinding systems for customers specializing in metal injection
molding
hibited equipment, irrespective of the
solvent used.
• Customized solutions for cleaning and treatment/recovery tasks
• Maintenance, spare part supply and safety inspections
State-of-the-art equipment includes • Consulting services for complete workspace solutions, selection of
load cells that weigh the medium in
washing agents based on economic and ecological aspects, comthe distillation boiler; combined with
munication with authorities and preparation of documents to comply
an intelligent control system, the
with guidelines and regulations.
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Functional principle of
RENZMANN – ROTO- / ROTOmaX – distillation units
The solvent is heated in the cylindrical boiler of the distillation unit, begins to boil and to evaporate. The solvent vapors condense in the watercooled condenser and then flow into a distillate container.
An agitator with rotating scrapers (rotor) prevents incrustations on the
heating surfaces and ensures a good heat transfer and high distillation
output.
After the end of distillation, the rotor discharges the viscous, pasty residue through the discharge valve into a disposal container. A manual
cleaning of the distillation boiler is not necessary.
The boiling point of the solvent can be lowered by means of a vacuum
unit (optional). This permits recovery even of high-boiling and heatsensitive substances (e.g. washing solvents containing nitrocellulose).
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Type ROTO
4
Type ROTOmaX
9
Type ROTO 9-18
Closed solvent circuit
distillation unit
ROTO 9
ROTO 12
ROTO 18
filling volume
ca. 140 l
ca. 250 l
ca. 400 l
Type ROTOmaX 15-110
cooling water
distillation unit
ROTOmaX 15 ROTOmaX 20 ROTOmaX 30 ROTOmaX 50 ROTOmaX 75 ROTOmaX 110
filling volume
ca. 50 l - 250 l
ca. 50 l - 250 l
ca. 70 l - 400 l
ca. 130 l - 650 l
ca. 200 l - 1000 l
ca. 300 l - 1500 l
vessel volume
ca. 450 l
ca. 450 l
ca. 750 l
ca. 1300 l
ca. 2000 l
ca. 3000 l
distillation output *
ca. 45-90 l/h
ca. 60-120 l/h
ca. 90-180 l/h
ca. 150-300 l/h
ca. 225-450 l/h
ca. 330-660 l/h
vessel volume
ca. 300 l
ca. 480 l
ca. 700 l
distillation output *
ca. 30-60 l/h
ca. 40-80 l/h
ca. 60-100 l/h
cooling water flow rate ** ca. 1,3 m³/h
ca. 1,7 m³/h
ca. 2,5 m³/h
ca. 4,3 m³/h
ca. 6,5 m³/h
ca. 9,5 m³/h
cooling water flow rate **
ca. 0,7 m³/h
ca. 1 m³/h
ca. 1,5 m³/h
heating energy
15 kW
20 kW
30 kW
50 kW
75 kW
110 kW
heating energy
9 kW
12 kW
18 kW
weight **
2200 kg
2300 kg
2500 kg
2700 kg
3100 kg
3300 kg
weight **
1300 kg
2200 kg
2500 kg
WxHxD
WxHxD
WxHxD
WxHxD
WxHxD
WxHxD
plate processor
dimensions mm ***
WxHxD
WxHxD
WxHxD
1300x2650x1700
1450x3400x1800
1560x3900x2000
required space mm ****
3500x3200x3600
4000x3700x4500
4000x3900x5000
Shipping dimensions mm
1500x1600x2800
1600x2300x2000
1750x2450x2100
plate processor
Distillation output depends on the solvent
If water from the public supply system is used; depends on the water temperature and the boiling point of the solvent,
closed cooling circuit without water consumption is possible
*** Standard version without accessories, without solvent container
**** Required space with 2 containers app.
• Cylindrical, vacuum-tight distillation
boiler
• Insulated heating jacket, floor and
lower jacket surface with thermal
oil and integrated electric heating elements. The unit can also be connected to an on-site steam or thermal
oil network
• Water-cooled stainless steel condenser
• Rotating scraper system (rotor),
prevents incrustations on the heating
surfaces and agitates the material to
be distilled
• Dirt-resistant discharge valve,
operated manually or pneumatically
• Unit on sturdy frame with stairs at the
side and an observation platform
(accessory for ROTO 9)
• Discharge height adapted to disposal container and/or 200-l-barrel (on
a pallet) (accessory for ROTO 9,
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• Optional: adapted residue carriage
(only with ROTO 9)
• Sight glass and explosion-proof
halogen lamp for observing the
distillation process
• Automatic filling stop by means of a
vibration limit switch and a pneumatic
ball valve in the filling line
• Batch distillation or continuous
distillation possible
• ex proof control elements at distillation unit: for vacuum, filling, heating,
rotation of scraper and EMERGENCY
STOP
• control cabinet with programmable
logic control (PLC) with text display,
input and/or display of chronology
and separate times of the functions
vacuum, filling, heating, scraper and
distilling down
required space mm ****
6000x3400x4000 6000x3400x4000 6000x3500x4500 6500x3600x4600 7000x3800x5200 7500x3900x5500
*
**
Distillation output depends on the solvent
If water from the public supply system is used; depends on the water temperature and the boiling point of the solvent,
closed cooling circuit without water consumption is possible
*** Standard version without accessories, without solvent container
**** Required space with 2 containers app.
vacuum unit
ROTOmaX components:
Accessories
standard discharge height 650 mm).
Other heights are possible.
1450x3000x1900 1450x3000x1900 1650x3100x2100 1950x3200x2600 2250x3300x2900 2550x3400x3200
Shipping dimensions mm 1700x2200x2000 1700x2200x2000 1800x2400x2300 2100x2600x2700 2400x2850x3000 2700x2900x3300
vessel- and container
cleaning
*
**
ROTO components
dimensions mm ***
distillate container
• Vacuum unit for lowering process
temperatures, with either a liquid
ring vacuum pump (for solvents with
a flash point > 55 °C) or a liquid jet
vacuum pump
distillation unit
• Cylindrical, vacuum-tight distillation
boiler consisting of an insulated dome
(stainless steel) with a heating floor
(standard steel) flanged to the bottom
waste solvent container
printing press
inline cleaning for
printing press parts
• Insulated, flat heating floor for heating
with steam (10 bar, 185°C max),
consisting of a double-walled plate,
ensures an excellent heat transfer
and full heating capacity regardless
of the solvent level in the boiler
external cleaning of
printing press parts
• Residue temperature control system for processing heat-sensitive
substances
• Distillation output monitor for automatic distillation stop when the output
drops below a set limit
Devices for a safe operation of the units
•
All electric and mechanical components are explosion-proofed in accordance with directive 94/9 EC (Atex 95),
type-tested rotating scraper system.
•
Conformity with all relevant EU safety directives is certified with a declaration of conformity and documented
by means of a CE label at the machine.
• Timer for automatic distillation start
• Seal plate or exhaust hood adapted
to on-site disposal container, optionally with an air extraction system
• Thermostatic valves if the unit is
connected to an on-site cooling/
public water supply; separate cooling
water devices with separate circuits
are available as option.
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•
All parts of the machine that come into contact with solvent are solvent-resistant.
•
Monitoring of the distillate temperature and deactivation of the heating in case of an interruption of the cooling
water supply etc.
•
Deactivation of the rotor by motor circuit breakers in case of an overload.
•
Residue temperature control system for heat-sensitive substances (accessory); the solvent temperature is measured, and
when specified temperature limits are reached, the heating is switched off and the distillation vessel is flooded with water.
•
Draining of the used solvent container is detected by flow detector (accessory).
•
Automatic deactivation of distillation in the distilling-off phase (accessory for ROTO, standard in ROTOmaX)
• Steam generator flanged to the heating floor, operated with electric power or with steam or thermal oil from
an on-site network. Direct heating of
the floor with steam or warm water is
also possible.
RENZMANN units for category 1 according to ATEX for Zone 0 on the inside
Fulfillment of the „CRITERIA FOR THE SELECTION OF EQUIPMENT AND PROTECTIVE
SYSTEMS“ according to the ATEX workplace directive 1999/92/EC (ATEX 137)
• Water-cooled stainless steel condenser
D.W.RENZMANN:
uses a certified quality assurance system according to ATEX and consistently implements all relevant
legal requirements.
• Rotating scraper system (rotor), prevents incrustations on the heating
floor, agitates the material to be distilled and keeps the discharge valve
clean
The operator:
is required by ATEX 137 to use equipment of the correct category for the respective hazard zones,
e.g. category 1 equipment for zone 0.
• Dirt-resistant discharge valve, operated manually or pneumatically
D.W.RENZMANN supplies category 1 distillation units with a type examination according to ATEX
and thereby protects customers from any liability due to unsuitable or prohibited distillation units,
irrespective of the solvent used.
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Accessories:
• Unit on sturdy frame with stairs at the
side and an observation platform
• Discharge height adapted to disposal
container and/or 200-l-barrel (on a
pallet). Other heights are possible.
• Sight glass and explosion-proof
halogen lamp for observing the distillation process
• Automatic filling stops when a preset
filling quantity is reached; the filling
quantity is monitored by means of
load cells that register the total weight
of the distillation boiler; filling stops by
means of a pneumatic ball valve in
the filling line
• Batch distillation or continuous
distillation possible
• Control of the heating temperature
according to the boiling temperature
• PLC system and display with readings
on heating temperature, filling quantity, refilling quantity, residue quantity,
distillate quantity, average distillation
output and operating hours
• Color monitor with graphic display
• Vacuum unit for lowering process
temperatures with a liquid jet vacuum
pump
• Residue temperature control
system for processing heat-sensitive
substances
• Sealing plate or sealing hood adapted
to on-site disposal container, optionally with an air extraction system
• Enclosure of the discharge area,
including a door; when combined with
an air extraction system, this makes it
possible to install the unit in an area
not protected against explosions
• Fully automated distillation with automatic residue monitoring in a disposal
container monitored by load cells
• Thermostatic valves if the unit is
connected to an on-site cooling/
public water supply; separate cooling
water devices with separate circuits
are available as option.
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Type ROTOmaX-W
Prevention of waste water coming from cleaning processes
We want you to benefit from our know-how:
The ROTOmaX-W distillation unit The soiled agent that has been slightly concentrated in the prevaporizes soiled aqueous/alkali- evaporator is now sucked into the distillation boiler, in which a
ne washing and rinsing agents. The vacuum has been generated. Due to the vacuum, the boiling temcondensed clean distillate is admitted perature in the distillation boiler is reduced to < 60°C. The temback into the rinsing water / washing perature difference of > 40°C between the boiler contents and the
agent circuit of the cleaning process. steam (100°C) from the pre-evaporator makes the steam in the
There is no waste water. The residue heating floor condense and transmit its energy to the contents of
– greatly reduced and concentrated the distillation boiler. There, the washing agent is vaporized and
compared to the used quantity of rin- concentrated to less than 5% of its original volume.
sing water / washing agent – is disposed The pre-evaporator distillate that condensed in the heating floor
is sucked into the condenser of the distillation unit and combines
of as hazardous waste.
The two-step distillation with a pre-eva- with the condensing vapors from the distillation boiler. The distilporator reduces the energy consumpti- late cools slightly in the condenser, runs to the vacuum unit and
from there into a separate clean water container.
on per liter of evaporated water by half.
Approximately half of the soiled agent The loss of liquid in the pre-evaporator (half of which is caused
is vaporized in the pre-evaporator under by evaporation, the other half by liquid being sucked into the dinormal pressure. The resulting steam stillation boiler) is compensated for automatically by continuous
(100°C) contains the energy supplied in refilling.
the pre-evaporator and is piped into the
heating floor of the distillation unit.
We determine the profitability of your project in terms of performance,
staff requirements, investments costs and operating costs, taking into account all relevant laws, regulations and directives. We support you in
planning the site of your new equipment, dealing with the authorities and
obtaining the required approvals and connecting your equipment to existing or future exhaust air systems.
In our lab, we provide distillation units for practical tests with your solvent or washing agent. All tests are documented electronically and the
results are made available to you after the conclusion of the tests.
We take customer service literally: we want to serve our customers.
Our top priority is to ensure smooth proceedings on your premises. To
eliminate potential problems from the start, we offer to have our staff
check the conditions on site and determine the possibilities of connecting our products to existing equipment.
RENZMANN engineers are trained and experienced experts that repair, install, commission and service our equipment worldwide.
When spare parts are needed, we do our utmost to supply these
parts as quickly as possible.
Distillation unit
ROTOmaX-W 20 ROTOmaX-W 30 ROTOmaX-W 50 ROTOmaX-W 75 ROTOmaX-W 110
Distillation output *
15-25 l/h
*
30-40 l/h
45-65 l/h
70-95 l/h
100-140 l/h
80 % more output with pre-evaporator
soiled water
cooling water
clean water
cooling water
heating
residue
pre-evaporator
10
distillation unit
vacuum unit
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D.W. Renzmann Apparatebau GmbH
Industriestraße 1
D-55569 Monzingen
Germany
Phone: +49 (0)67 51 878-0
Fax:
+49 (0)67 51 878-111
www.dw-renzmann.de
info@dw-renzmann.de
RIOBEER AG Cleaning Solutions
Phone: +41 (0)56 6186464
Fax:
+41 (0)56 6186418
www.riobeer.ch
info@riobeer.ch
UK 04/12
Schützenmattweg 33
CH-5610 Wohlen
Switzerland