AMBIENT-TEMPERATURE SULFIDE-REMOVAL ADSORBENT MLDZM-1
Release date: 2015-09-29 & Source& Views: 185
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Product name: AMBIENT-TEMPERATURE SULFIDE-REMOVAL ADSORBENT MLDZM-1
Detailed introduction1.Product features and scope of application
zinc oxide adsorbent MLDZM-1 is applicable to deep desulfurization
of liquid propylene and industrial feed gases at ambient
temperature. It not only absorbs hydrogen sulfide, but also has
certain conversion and absorption capability for COS in the
stream.Overall sulfur（H2S+COS）in the treated stream can be less than 0.1ppm.
2. Physical properties
4 .Operation condition
No regeneration is needed for spent adsorbent. But absorption may
continue after the adsorbent bed is broken through , until the
catalyst is finally saturated with sulfur. For example, feed stream
can pass through 1st reactor even when it has been broken through,
until it is saturated with sulfur and changed. This lowers sulfur
content in the stream to 2nd reactor and makes full play of the
absorption capacity of the adsorbent in 1st reactor.
(1).Clean the reactor of any debris and screen out any dust from
(2).Install two layers of stainless wire net of smaller mesh size
than the adsorbent and then 100mm depth of 20-30mm inert balls on
grid of the reactor. And again install two layers of stainless wire
net of smaller mesh size than the adsorbent on top of the inert
(3).Use special tools to load the adsorbent evenly into the
reactor. Inspect uniformity of the loading. When inner-reactor
operation is needed, lay a plate on the adsorbent first for the
operator to step upon.
(4).Install a layer of stainless wire net of smaller mesh size than
the adsorbent and 100 depth of20-30mm inert balls on top of the bed
to prevent stripping of the adsorbent by process stream and ensure
uniform distribution of process flow.
6.Start-up and shutdown
(1)Close all inlet and outlet valves before start-up. Then open
liquid propylene inlet valve and raise pressure at 0.5MPa/ 10 min.
(2)Open the outlet valve slowly after reactor pressure approaches
that of that feed. Run at a quarter load for four hours and analyze
outlet sulfur to ensure an outlet sulfur concentration of no
greater than 0.1 ppm.
(3)Enhance to half load when outlet sulfur concentration is up to
the process requirement and transit to full load operation in
(4)Close inlet valve first and then close outlet valve to
disconnect the reactor from system before shutdown.
(5)Avoid wide scope fluctuation in pressure and load, which may
impair the adsorbent.
(6)For gaseous feed desulfurization system, purge the system with
inert gas (e.g., nitrogen) before start-up or after shutdown. For
the rest of procedure, please refer to procedure for Liquid
Propylene Desulfurization Adsorbent MLDZM-1.
7. Transportation and storage
(1)The adsorbent is packed in plastic or iron barrels lined inside
with plastic bags to avoid moisture or chemical attack.
(2)Avoid tumbling, collision and vibration.