Division I Primary or process-related techniques, such as:

United Kingdom

Technique	Description	Applicability
(i) Use of an attrition-resistant catalyst	Selection of catalyst substance that is able to resist abrasion and fragmentation in order to reduce dust emissions	Generally applicable provided the activity and selectivity of the catalyst are sufficient
(ii) Use of low sulphur feedstock (e.g. by feedstock selection or by hydrotreatment of feed)	Feedstock selection favours low sulphur feedstocks among the possible sources to be processed at the unit. Hydrotreatment aims at reducing the sulphur, nitrogen and metal contents of the feed. See Section 1.20.3	Requires sufficient availability of low sulphur feedstocks, hydrogen production and hydrogen sulphide (H₂S) treatment capacity (e.g. amine and Claus units)

Technique

Description

Applicability

(i)

Use of an attrition-resistant catalyst

Selection of catalyst substance that is able to resist abrasion and fragmentation in order to reduce dust emissions

Generally applicable provided the activity and selectivity of the catalyst are sufficient

(ii)

Use of low sulphur feedstock (e.g. by feedstock selection or by hydrotreatment of feed)

Feedstock selection favours low sulphur feedstocks among the possible sources to be processed at the unit.

Hydrotreatment aims at reducing the sulphur, nitrogen and metal contents of the feed.

See Section 1.20.3

Requires sufficient availability of low sulphur feedstocks, hydrogen production and hydrogen sulphide (H₂S) treatment capacity (e.g. amine and Claus units)

Notes on Division

Footnotes

f1: Soot blowing in CO boiler and through the gas cooler is excluded.
f2: The lower end of the range can be achieved with a 4-field ESP.