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Thermochemical conversion of black liquor organics into fuels

Technical Report:

Abstract

A low viscosity fuel oil has been prepared from black liquor by the following process: (1) thermal treatment of black liquor at 300 - 350 deg C under pressure (20 MPa) in the presence of excess alkali (NaOH), (2) removal of sodium from the black liquor primary oil by acid wash, and (3) catalytic upgrading of the sodium-free black liquor primary oil. The yield of primary oil was about 40 wt% of the initial black liquor organics in the thermal treatment stage. The oil had a sodium content of 7 % (dry matter basis), and only about 1 % of the oil was distillable (< 260 deg C). By washing the oil with dilute acid the sodium content was reduced to 0.02 %. In this case the distillate yield was 11 %. After the catalytic (Ni-Mo/CoMo) two-stage (30 min at 280 deg C and 60 min at 390 deg C) hydro-treatment the oil yield was 88 % and the distillate yield 51 %. The total loss of organics in the wash and upgrading stages was 20 - 25 %.
Authors:
Oasmaa, A; Alen, R; McKeough, P; Johansson, A [1] 
  1. Technical Research Centre of Finland, Espoo (Finland). Lab. of Fuel and Process Technology
Publication Date:
Dec 31, 1992
Product Type:
Technical Report
Report Number:
VTT-PUB-102
Reference Number:
SCA: 320305; PA: FI-92:003424; SN: 93000918033
Resource Relation:
Other Information: PBD: 1992
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; PAPER INDUSTRY; WASTE PRODUCT UTILIZATION; WASTE PROCESSING; DESIGN; FUEL OILS; BOILERS; SPENT LIQUORS; 320305; INDUSTRIAL WASTE MANAGEMENT
OSTI ID:
10111631
Research Organizations:
Technical Research Centre of Finland, Espoo (Finland)
Country of Origin:
Finland
Language:
English
Other Identifying Numbers:
Other: ON: DE93752851; ISBN 951-38-4220-7; TRN: FI9203424
Availability:
OSTI; NTIS
Submitting Site:
FI
Size:
28 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Oasmaa, A, Alen, R, McKeough, P, and Johansson, A. Thermochemical conversion of black liquor organics into fuels. Finland: N. p., 1992. Web.
Oasmaa, A, Alen, R, McKeough, P, & Johansson, A. Thermochemical conversion of black liquor organics into fuels. Finland.
Oasmaa, A, Alen, R, McKeough, P, and Johansson, A. 1992. "Thermochemical conversion of black liquor organics into fuels." Finland.
@misc{etde_10111631,
title = {Thermochemical conversion of black liquor organics into fuels}
author = {Oasmaa, A, Alen, R, McKeough, P, and Johansson, A}
abstractNote = {A low viscosity fuel oil has been prepared from black liquor by the following process: (1) thermal treatment of black liquor at 300 - 350 deg C under pressure (20 MPa) in the presence of excess alkali (NaOH), (2) removal of sodium from the black liquor primary oil by acid wash, and (3) catalytic upgrading of the sodium-free black liquor primary oil. The yield of primary oil was about 40 wt% of the initial black liquor organics in the thermal treatment stage. The oil had a sodium content of 7 % (dry matter basis), and only about 1 % of the oil was distillable (< 260 deg C). By washing the oil with dilute acid the sodium content was reduced to 0.02 %. In this case the distillate yield was 11 %. After the catalytic (Ni-Mo/CoMo) two-stage (30 min at 280 deg C and 60 min at 390 deg C) hydro-treatment the oil yield was 88 % and the distillate yield 51 %. The total loss of organics in the wash and upgrading stages was 20 - 25 %.}
place = {Finland}
year = {1992}
month = {Dec}
}