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BIRLA INSTITUTE OF TECHNOLOGY & SCIENCE

DEPARTMENT OF CHEMICAL ENGINEERING

1stSemester 2010-2011

Corse T!t"e# E$%!ro$me$t" M$'eme$t S(stems )CHE G*1+,

Comre.e$s!%e E/m!$t!o$ )C"ose Boo,

Mrs# 20 Dte# 031232010 T!me# 1 . 1* m!$

Note# A$s4er "" 5est!o$s !$ se5e$6e )1 to 7,8

18 )19191919292: ; Mrs,

a. What are the pretreatment programs enforced by the POTW for industrial

discharges?

b. Differentiate between the actual vs. potential emissions.c. What are the characteristics of environmental indicators?

d. To what extent does the adoption of an E! change a facility"s use of advanced

environmental and materials accounting techni#ues?

e. $ow should you ta%e into account the conditions of the environment whendeveloping your ob&ectives and targets or measuring and monitoring procedure?

f. Describe the Dose'(esponse )urves. $ow is it helpful in ris% assessments of

chemical agents?

28 )19+ : 7 mrs,*oeing has converted fifteen waterwash paint booths to dry filters for particulate control

to facilitatecompliance with the inorganic +)T standards of the +erospace ,E!$+P.)ross'functional coordination of +)T re#uirements has been critical not only forensuring compliance with thosere#uirements- but also for identifying and implementingsuitable alternatives not sub&ect to any +)Tstandards. or instance- the applicability ofthe )hromium +)T standard at the *oeing Philadelphia facility was eliminated byreplacing a chromic acid anodi/ing process with a boric0sulfuric acid anodi/ing processin 1223. Ongoing research and development efforts see% alternatives to the two

remaining trichloroethylene vapor degreasers on site. 4iable alternatives will not utili/ehalogenatedsolvent cleaners sub&ect to the !ubpart T ,E!$+P. )urrently- the ma&orityof the batch cleaning isperformed using either spray or immersion a#ueous cleaning.

a. 5nder which act of EP+- +)T standards were developed?

b. Explain the applicability of +)T in case of aerospace world.

+8 )292 : 7 mrs,

+n unhealthy body of water is said to be impaired- meaning it fails to meet state

water #uality standards. This pollution commonly ta%es the form of excessiveamounts of sediment- organic matter- or fertili/er-which ma%es the water cloudy- or

green- and unable tosupport a#uatic life such as fish.TD6 pro&ects are usually led

by local government organi/ations- often a partnership between soil and waterconservation districts- cities- counties- and others. These organi/ations are called

6ocal Pro&ect !ponsors. The municipal corporations plays a %ey role in facilitating

and funding thispro&ect

a. What is the purpose of TD6 in river based pro&ects?b. What %ind of information is obtained by carrying out TD6 based calculations?

1

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78 )7 mrs,

)onsider the reactor system as shown in the figure below. The reaction is exothermic.+ cooling system is provided to remove the excess energy of reaction. 7n the event the

cooling function is lost- the temperature of the reactor would increase. This would

lead to an increase in reaction rate leading to the additional energy release. The result

could be a runaway reaction with pressures exceeding the bursting pressure of the

reactor. The temperature with in the reactor is measured and is used to control thecooling water flow rate by a valve.

Perform a $+8OP on this unit to improve the safety of the process.

ALL THE BEST

9

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BIRLA INSTITUTE OF TECHNOLOGY & SCIENCE

DEPARTMENT OF CHEMICAL ENGINEERING

1stSemester 2010-2011

Corse T!t"e# E$%!ro$me$t" M$'eme$t S(stems )CHE G*1+,

Comre.e$s!%e E/m!$t!o$ )Oe$

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The given below figure represents the process chain for the conventional syngas

production by catalytic steam reforming of natural gas. )arefully study the flow sheetand use the atrix method for the estimation of environmental impacts for the

emissions during the various steps involved during the entire process.

Note# Mss '

s($'s 4!t. H23CO mo"r rt!o o= 28

>

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The reaction'1 shows the steam reforming of natural gas

99> BHCOOHCH ++ ;(eaction'1=

The $9to )O ratio can be ad&usted by help of the water'gas shift reaction given by

reaction'9.999

HCOOHCO ++ ;(eaction' 9=

+8 )* Mrs,

Data for air emission is given below for different actions occurred in electricity

generation plant. +ll emission data are based on the 1 Wh electricity produced. Put

all actions in decreasing order of environmental impact.

ALL THE BEST