INDUSTRIAS BASICAS DE CALDAS SUCCESSFUL CASE

Héctor Cipriano González Vargas Rogelio Grisales Rincón.

Return of exhaust gas from sulfonation line to the sulfuric acid plant to recover sulphur dioxide Sulphur + Sulphuric Acid.

o gug g v/i. Introduction. 01.

00 00 00. Sulphur burning , contact method with double absorption in a (3+1) arrangement.

Is there a PROBLEM ?. 02.

We need to remove minimum the 90% of sulphates in the wastewater effluent or prevent their generation in the origin..

EVALUATION OF ALTERNATIVES. 03.

The final decision was to carried out a project to evaluate technical and economical feasibility to r eturn t he sulphonation exhaust gas to the sulphuric acid plant and recover the Sulphur dioxide.

RETORNO SO 2. PLANT TESTS. 04.

Return of exhaust gas from sulfonation line to the sulfuric acid plant to recover sulphur dioxide Sulphur + Sulphuric Acid.

Diagrama Descripci n generada autom ticamente. Return of exhaust gas from sulfonation line to the sulfuric acid plant to recover sulphur dioxide Sulphur + Sulphuric Acid.

A risk analysis was made using Hazop methodology.

Flowchart to the first six (6) test runs. to Stack Scrubber sog 02 Mist Electrostatic precipitator Caustic soda HV02 HVOI 02 50K1 to Acid H o Hot heat exchanger Cold heat exchanger um tank Intermediate absorption tower from Sulphur burner to Economizer Catalytic converter Sulphonation plant Sulphuric acid plant.

PLANT TEST. Goals. Evaluate feasibility Establish operating conditions Validate risks and security.

PLANT TEST. Results. Maximum capacity achived : 90 MTPD Discharge of the main blower, pressure drops, SO2 emissions in the stack, acid turbidity and iron content increased within acceptable limits according to quality specifications.

Results. The presence of acid mists in the intermediate absorption tower was not evidenced Wood test negative.

PLANT TEST. Return of exhaust gas from sulfonation line to the sulfuric acid plant to recover sulphur dioxide Sulphur + Sulphuric Acid.

Goals. Determine the maximum gas flow that was possible to recover with maximum production capacity (125 MTPD ).

Return of exhaust gas from sulfonation line to the sulfuric acid plant to recover sulphur dioxide Sulphur + Sulphuric Acid.

PLANT TEST. Return of exhaust gas from sulfonation line to the sulfuric acid plant to recover sulphur dioxide Sulphur + Sulphuric Acid.

NEW BED CATALYST. . From gas filter. … To Converter.

NEW BLOWER. .

RESULTS AND CONCLUSIONS. 05.

Return of exhaust gas from sulfonation line to the sulfuric acid plant to recover sulphur dioxide Sulphur + Sulphuric Acid.

00 00 00.