3.10 internal water treatment for boilers

Descripción

Test sobre 3.10 internal water treatment for boilers, creado por TRAVIS CANNING el 29/01/2016.
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TRAVIS CANNING
Creado por TRAVIS CANNING hace casi 9 años
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Resumen del Recurso

Pregunta 1

Pregunta
One method of controlling chemical concentrations is to prepare chemical batches using a table of tank level vs__________
Respuesta
  • chemical addition
  • pump stroke
  • steam flow
  • feedwater addition

Pregunta 2

Pregunta
Mechanical carryover can be prevented by careful boiler design and by operating the boiler within the design parameters for ______ level and firing rates
Respuesta
  • chemical
  • water
  • blowdown
  • impurities

Pregunta 3

Pregunta
The two most common designs of chemical feed pumps are the ________, plunger type and the electronic impulse-type
Respuesta
  • electric
  • electronic
  • reciprocating
  • vibrating

Pregunta 4

Pregunta
A______ feed system, this involves feeding the chemicals to the boiler system at the most efficient injection points and at a steady and continuous rate.
Respuesta
  • closed bypass
  • shot
  • slug
  • continuous

Pregunta 5

Pregunta
_______ is particularly harmful as it forms a very hard deposit on turbine blades.
Respuesta
  • carryover
  • mist
  • silica
  • phosphate

Pregunta 6

Pregunta
The cause of carryover can be divided into two broad categories, namely mechanical and
Respuesta
  • virtual
  • carryover
  • upset
  • chemical

Pregunta 7

Pregunta
_______ is particularly harmful as it forms a very hard deposit on turbine blades
Respuesta
  • carryover
  • mist
  • sillica
  • phosphate

Pregunta 8

Pregunta
control of the continuous blowdown flow is _____ adjusted by the operator
Respuesta
  • manually
  • automatically
  • quickly
  • slowly

Pregunta 9

Pregunta
Shot feeding involves the injection of chemicals over a relatively _______ period of time
Respuesta
  • long
  • intermittent
  • short
  • measured

Pregunta 10

Pregunta
With the ______ feed system, its a common practice to mix one batch of chemicals per day.
Respuesta
  • closed bypass
  • shot
  • slug
  • continuous

Pregunta 11

Pregunta
_______ is any solid, liquid or vaprous contaminants that leaves the boiler with the steam
Respuesta
  • carryover
  • blowdown
  • feedwater
  • mist
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