6000 Series
Backwash Filtration Systems for
Refineries |
| |
|
 |
GENERAL INFORMATION
Tubular backwash filters are designed
to remove solids from liquids by capturing the solids on a permanent
reusable screen or filter element. At a predetermined pressure
differential, the system reverses flow through each element in the
filter, one element at a time, while the others continue filtering
to provide a continuous operation. The
ProGuard Filtration System is designed for high temperature, high
pressure critical refinery applications where low maintenance,
continuous operations are a necessity.
REQUEST MORE INFO |
| |
|
STANDARD
FEATURES |
STANDARD CONSTRUCTION
The Series 6000 filtration system
is a self-contained, fully-assembled filter consisting of individual
filter tubes with elements manifolded in pairs to common 2" inlet
and outlet connections. These filters are designed for ANSI Class
300 pressures and temperatures and feature carbon steel construction
as standard. The carbon steel inlet and outlet headers come in 4, 6,
8 and 10 inch pipe sizes to handle specific flow rate
requirements.
AUTOMATIC BACKWASH
The ProGuard Series 6000 Filtration
System features a maintenance free, programmable logic controller
(PLC). The PLC allows backwash at a predetermined time or
differential pressure. The PLC can also be interfaced from one
filter bank to the next in large systems so that only one start
signal is required to clean the whole system. The flexibility of a
PLC allows for additional process monitoring functions not available
with conventional electrical or pneumatic control systems. The
backwash cycle is always accomplished with the system on-line,
allowing continuous operating during cleaning and
maintenance.
|
OPERATION
Normal operation is for feed to
flow from inlet to outlet to the reactor. There are, however, three
ways to backwash the filters, depending on process requirements and
the planned disposal of the backwash effluent. In all three systems
the backwash effluent can be mixed with a lower grade product or
reintroduced downstream of the reactor. |
- Internal Backwash - Internal backwash uses filtered feed
available in the outlet header to clean the filter elements,
washing the contaminants off the element's surface. Upon
initiating the backwash sequence, the inlet valve closes, the
drain valve opens and pressurized fluid in the outlet header is
diverted backwards through the filter element, carrying the
contaminants to the low pressure drain.
- External Backwash - When small amounts of raw feed can be
tolerated in the backwash effluent, an external, lighter product
which has a solvent effect, such as diesel, can be used to clean
the filter elements. External backwash also offers more control
over flow rate and pressure than the internal backwash. Upon
initiation of the cycle, both inlet and outlet valves close, and
the backwash supply and drain valves open, reversing the flow
through the filter elements.
- Purge Backwash - In those instances where no raw feed can
be left in the backwash effluent, a separate purge header is added
using treated fluid to purge the raw feed towards the reactor
prior to backwashing. After purging, the backwash cycle is
completed in the same manner as an external backwash
system.
FILTER ELEMENT
The Series 6000 filter element is the 316
Profile wire or wedge wire screen. Recent advances in wire and
filter element technology allows the use of 50% thinner wire,
doubling the amount of open area on each element and increasing the
throughput by 50%. The result is a durable, maintenance-free filter
system with longer run times between backwash cycles, less backwash
effluent and more upgraded
product.
Home
• Company
• Email
• Products |
|
