case sample of a ct option
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Case sample of a CT option. Control of sulfuric acid use in concentrated latex industry. Working conditions found during audit. - PowerPoint PPT PresentationTRANSCRIPT
Case sample of Case sample of a CT optiona CT option
Control of sulfuric aci d use in concentrated
latex industry
Working conditions fou Working conditions fou nd during audit nd during audit
In latex sedimentation, workers ad d sulfuric acid to the latex to promo te coagulation. They do this by dep
- ending on long experience withou t measuring. Then they use a stick
to stir and mix the acid with latex, a nd later scoop the coagula floating on the surface. The water remainin
g is drained into the rubber trap.
Suggested Suggested CT optionCT option
Ensure appropriate consumpti on of acid used in coagulation, by plotting titration curve of s
kimmed latex at various amou nt of ammonia, and add only r
equired amount of acid each time.
Technical feasibility st Technical feasibility st udy udy
It is an operational control mea sure in use.
The factory is capable of implementing.
There are no other technical limitations.
Economic feasibility st Economic feasibility studyudy Investment cost 7 , 000 baht
(handheld pH meter and cost for plotting skim latex titration)
Service cost 50 baht (sampling skimmed latex for ammonia check)
Savings 360 baht (Acid costs saved per sedimentation)
Investment payback after sedimentation23 times
(calculated from 7,000/(360-50 ) times)
Implementation steps Implementation stepsActivity March 00 April 00 Responsible party
1. Prepare details and obtain approval __ CT team
2. Approve assignment __ Management
3. Plot titration of skimmed latex atvarious ammonia concentrations
_ Quality ControlDept.
4. Obtain a handheld pH meter _ _ MaintenanceDept.
5. Train employees on proper workprocedure
__ CT team
6. Proceed and collect data forcomparison
____ Workers and CTteam
Case sample of a Case sample of a CT CT optionoption
Proper use of a watersoftener
Working conditions foun d during assessment
Resin is rinsed off the water sof tener by using 100 kg. of salt in
each regenerating cycle. Regenerationtakes1 5 mi nutes The softener is used for eight h
ours before the next regeneration
Suggested Suggested CT optionsCT options
Usesaltwith10%concentrationforcleaning,orabout125kg.per regenerati ngcycle.
Increase regeneration time to 3 0 minutes
Operationaltimei s i ncreasedto24hours
Technical feasibility st Technical feasibility studyudy
It is a proper resin washing meth od, lasting no less than 3 0 min
utes. Thefactory i s capabl e of i mpl eme
ntingsuchadj ustments. There are no other technical l
imitations.
Economic feasibility st Economic feasibility studyudy
Investment costNone
Savings385 baht/24hours
(salt cost 175 kg./day x 2.2 baht/kg., excluding cost for water, labor and t
ime saved)
Payback peri odImmediate
Work procedure Work procedureActivity Day 1 Day 2 Day 3 Responsible party
1. Prepare details and obtain approval -- CT team
2. Approve assignment - Utility Manager
3. Train employees on proper workprocedure
--- CT team
4. Proceed and collect data forcomparison
--- Operators and CTteam
Samples of differe Samples of differe nt nt CT optionsCT options
When cleaning factory floors, swe ep off dirt and scraps before hosi ng down with water
Check for leaks in various connec tions, e.g., pipes for raw, soft an
d cold water, and repair immediat ely if leaks are found
Ensure that float valves are prope rly functioning
-Where possible, use high pressur e nozzle on water hoses
Avoid cleaning by overflow syst - em; counter flow system is pref
erable Plan production process so tha
t minimal washing is required Product change should not tak
e place too often Check quality of water used an
d use appropriate type of water
Insulate hot and cold water pip es and repair the insulation if d
amaged Consider returning condensate Avoid using steam directly by u
sing indirect heat transfer whe re applicable
Water used to cool machines s hould be reused
Acid and alkaline should not be d umped after only one use; try to r
- e use by adding acid or alkaline t o obtain required concentration
For light, fluffy materials, trap sy stems should be utilized to preve
nt loss Install water meter at key points
so that loss and production effici ency will be known
Avoid using hazardous chemicals
Prepare work manuals and hav e them available for use
Maintain machines in good wo rking condition
Check condition of boilers regularly
If production is much lower tha n production capacity, product
ion process should be revised t o minimize loss
Air conditioner should be set at a n appropriate temperature
Lights should be turned off when not in use; use spot lighting wher
e possible Light switches should be position
ed throughout different work are as. Replace spent bulbs with ene rgy saving bulbs.
Clean light bulbs and reflectors regularly
SummarySummary CT CT benefitsbenefits
Increased production efficiency
Reduced production cost
Reduced environmen tal problems at sourc
e Good image Good relations with lo
cal community
SummarySummary Factors crucial for sus Factors crucial for sus
taining CT taining CT Management support
Team work Determination Communication Training Incentives
SummarySummary Management role in CT imp Management role in CT imp
lementationlementation Continuous support for CT activities
Involve everyone in th e organization in CT ac
tivities Incorporate CT into
management plan (marketing, production, finance, accounting, personnel and information system
For additional information, co For additional information, contact:ntact:
Cleaner Technology Unit Cleaner Technology Unit
Tel.Tel. -2 8 1 2 0 1 0 -2 8 1 2 0 1 0FaxFax -2 8 1 7 2 8 7 -2 8 1 7 2 8 7e-mail : [email protected] : [email protected]