Instructional Manual For Clarification Of Startup In Source Categories Affected By New Source Performance Standards - U.s. Environmental Protection Agency - 1979 Page 89
ADVERTISEMENT
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
28 
29 
30 
31 
32 
33 
34 
35 
36 
37 
38 
39 
40 
41 
42 
43 
44 
45 
46 
47 
48 
49 
50 
51 
52 
53 
54 
55 
56 
57 
58 
59 
60 
61 
62 
63 
64 
65 
66 
67 
68 
69 
70 
71 
72 
73 
74 
75 
76 
77 
78 
79 
80 
81 
82 
83 
84 
85 
86 
87 
88 
89 
90 
91 
92 
93 
94 
95 
96 
97 
98 
99 
100 
101 
102 
103 
104 
105 
106 
107 
108 
109 
110 
111 
112 
113 
114 
115 
116 
117 
118 
119 
120 
121 
122 
123 
124 
125 
126 
127 
128 
129 
130 
131 
132 
133 
134 
135 
136 
137 
138 
139 
140 
141 
142 
143 
144 
145 
146 Startup Operations
Slntering Machine:
After the pre-startup operation and heat-up is com-
pleted, the sintering machine normally goes into a one shift per day operation
for 2 to 3 weeks.
This period allows the operators to become familiar with the
machine.
Each daily startup takes about
l~
hours to produce a product.
Before
going into maximum production, the machine will go into a 24 hr/day operation
for about 2 weeks.
By the end of the second week, operators and the machine
should be ready for maximum production.
On the average. the sintering machine
should be able to reach maximum production in 3 to 6 months.
The time needed
to reach maximum production for a sintering machine varies, new sinter machine
designs and new processes require more attention than off-the-shelf sintering
machines.
The first years production rate normally ranges between 70 to 80
percent because of malfunction and repair time; however, the production rate
usually increases in the succeeding year to maximum production rate (90 to 100
percent).
The officalstartup date should be when material is first introduced
into the machine.
Manufacturers indicated that the 180 day performance test
period is a reasonable time in which to reach maximum production.
Reduction - Blast Furnaces:
Following a 2-3 hour pre-startup, the furnace
is ready to receive a charge and will normally reach a maximum production rate
in 24 to 48 hours.
The startup procedure for a lead blast furnace first re-
quires the hand stacking of wood in the furnace.
This operation takes 6-12
hours depending on the size of the furnace.
Next, the blast furnace is charged
with oil-soaked coke (3-5 hours).
The blast furnace is ignited, brought up to
operating temperatures and sinter is slowly fed into the furnace until the
maximum charge rate is reached.
During this time, other materials such as
limestone, silica, litharge and slag-forming materials are added to the furnace
to develop a high quality lead bullion pool for continuous operation.
If the
charge period goes smoothly, a blast furnace can reach maximum production in
24 hours; however, minor problems will extend this time to 2 days.
The life of
a blast furnace normally does not exceed 180 days, therefore, there should be
no problems in testing this unit under maximum production conditions with'the
specified time (180 days).
The official startup should be designated as the
time when the wood and coke are first ignited.
Reduction - Dross Reverberatory:
After pre-startup and heat-up operations,
lead
bulH.on is
slowly fed into the furnace to prevent thermal shQck and to
maintain a stable temperature.
The time required to reach maximum production is
3-5 days after material is first introduced into the furnace.
The total time
required from a ,cold start to maximum production will range from 5-7 days.
The
official startup date should be when material is first introduced into the
furnace.
Reduction - Electrical FUrnace:
Following pre-startup and heat-up, lead
bullion is slowly introduced into the furnace.
The transformer is then ener-
gized, heating the furnace and charge to desired temperatures; the introduction
of more charge lowers the temperature and the furnace is energized again.
This
operation occurs many times until the furnace is filled to maximum capacity.
The time required to reach maximum production is about 5 days from a cold start.
Two to three days are considered heat-up time.
The official startup date should
begin When material is first introduced into the furnace.
77
ADVERTISEMENT
0 votes
Related Articles
Related forms
Epa 402-r-98-008 - Statistical Procedures For Certifying Phosphogypsum For Entry Into Commerce - U.s. Environmental Protection Agency - 1998
Legal
Small Systems Guide To Safe Drinking Water Act Regulations - U.s. Environmental Protection Agency - 2003
Legal
Form Rc-4100 - Reader Response Card - U.s. Environmental Protection Agency Water Resource Center
Legal
Request For Transfer Of A Computer Readable Form Under 37 Cfr 1.821(e) - U.s. Department Of Commerce
Legal
U.s. Government, Federal Agency Or Instrumentality Exemption Certificate Form - Kansas Department Of Revenue
Financial
Related Categories
Parent category: Legal