Production of synthesis gas from solvent deasphalting process bottoms in a membrane wall gasification reactor
First Claim
1. A process for the gasification of solvent deasphalting process bottoms containing a spent solid adsorbent material recovered from a solvent deasphalting process to produce synthesis gas, the bottoms containing ash-forming constitutes, the process comprising:
- a. preparing a flowable slurry of the solvent deasphalting process bottoms consisting of the spent solid adsorbent material, asphalt and process reject materials;
b. introducing the slurry of solvent deasphalting process bottoms as a pressurized feedstock into a membrane wall gasification reactor with a predetermined amount of oxygen and steam based on the carbon content of the feedstock;
c. operating the gasification reactor at a temperature in the range of 900°
C. to 1700°
C. and a pressure of from 20 bars to 100 bars;
d. subjecting the solvent deasphalting process bottoms to partial oxidation to produce hydrogen, carbon monoxide and slag derived from the spent solid adsorbent material;
e. recovering the hydrogen and carbon monoxide from the reactor in the form of a hot raw synthesis gas;
f. passing the hot raw synthesis gas to a steam generating heat exchanger to cool the hot raw synthesis gas and produce steam;
g. recovering steam from the heat exchanger and introducing the steam into a turbine to produce electricity; and
h. recovering the cooled synthesis gas.
1 Assignment
0 Petitions
Accused Products
Abstract
A cost-effective solution for the disposal of solvent deasphalting process bottoms that include spent solid adsorbent material containing ash-producing constituents, asphalt and process reject materials is provided by introducing them in the form of a flowable slurry into a membrane wall gasification reactor to produce a synthesis gas and, optionally, subjecting the synthesis gas to a water-gas shift reaction to produce a more hydrogen-rich product stream; process steam and electricity are produced by recovering the sensible heat values from the hot synthesis gas.
33 Citations
25 Claims
-
1. A process for the gasification of solvent deasphalting process bottoms containing a spent solid adsorbent material recovered from a solvent deasphalting process to produce synthesis gas, the bottoms containing ash-forming constitutes, the process comprising:
-
a. preparing a flowable slurry of the solvent deasphalting process bottoms consisting of the spent solid adsorbent material, asphalt and process reject materials; b. introducing the slurry of solvent deasphalting process bottoms as a pressurized feedstock into a membrane wall gasification reactor with a predetermined amount of oxygen and steam based on the carbon content of the feedstock; c. operating the gasification reactor at a temperature in the range of 900°
C. to 1700°
C. and a pressure of from 20 bars to 100 bars;d. subjecting the solvent deasphalting process bottoms to partial oxidation to produce hydrogen, carbon monoxide and slag derived from the spent solid adsorbent material; e. recovering the hydrogen and carbon monoxide from the reactor in the form of a hot raw synthesis gas; f. passing the hot raw synthesis gas to a steam generating heat exchanger to cool the hot raw synthesis gas and produce steam; g. recovering steam from the heat exchanger and introducing the steam into a turbine to produce electricity; and h. recovering the cooled synthesis gas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
-
Specification