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Table 7、The Types of Waste Solvent Feed

system) includes SNCR(Selective Non-Catalytic Reduction), and then the hot flue gas is heat-exchanged with boiler feed
SCR(Selective catalytic Reduction)/GGH(Gas Gas Heater), water to generate required steam in waste heat boiler. The
Scrubber and WESP(Wet Electro-Static Precipitator) to meet exhaust flue gas will go through SCR/GGH, Scrubber and WESP
the environmental emission requirement. to the atmosphere via 27 m high stack.
Particulates : less than 25 mg/Nm3
4.6.4 Project Milestone
Sulfur oxide(SOx) : less than 45ppm
As shown in Figure 25, the engineering design will take
Nitrogen oxide(NOx) : less than 90ppm
about 5 months including HAZOP review. The civil construction
See the process flow in Figure 22 below.
will start around 9/E in 2021 and take about 15 months to
4.6.3 Plant Layout
complete including equipment installation. The commissioning
As shown in Figure 23 and Figure 24 below, STRP consists will start from January 15 2023 thus the normal operation is
of control building, spent solvent storage area, process area, debuted on March 16 in 2023.
auxiliary facility area, utility pipe rack, and maintenance access
area. Within the process area, spent solvent is pumped and
sprayed into furnace by sprayer Lance for thermal combustion

Figure 22、 Process Flow Diagram of STRP

FACILITY JOURNAL 09 2021 71