Concept explainers
(a)
Interpretation:
The flowchart for the process needs to be drawn. The composition of the gas existing the furnace, the heat
Concept introduction:
From the block diagram of the process, we can elaborate composition of each molecule in gas. Steam generation rate can be calculated by energy balance on boiler and rate of heat generation can be found by total energy balance.
(b)
Interpretation:
The temperature of the entered air in the furnace and the rate of production of steam (kg/h) needs to be determined.
Concept introduction:
In this part, first we have to calculate total enthalpy balance or steam generation rate. Then energy balance on air preheater.By comparing both the quantites we can calculate the temperature of the air entering into the furnace.
(c)
Interpretation:
Write the significance of air preheahing and reason for using combustion gases as heating media in boiler.
Concept introduction:
In this question we have to describe about working of air preheater and its effect on overall system performance.Air preheater eliminates heat loss of exhaust gases and increases efficiency.
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Chapter 9 Solutions
ELEM.PRIN.OF CHEM.PROCESS-ACCESS
- Question 7 (10 points) Identify the carboxylic acid present in each of the following items and draw their structures: Food Vinegar Oranges Yogurt Sour Milk Pickles Acid Structure Paragraph ✓ BI UAE 0118 + v Task: 1. Identify the carboxylic acid 2. Provide Name 3. Draw structure 4. Take a picture of your table and insert Add a File Record Audio Record Video 11.arrow_forwardCheck the box under each structure in the table that is an enantiomer of the molecule shown below. If none of them are, check the none of the above box under the table. Molecule 1 Molecule 2 IZ IN Molecule 4 Molecule 5 ZI none of the above ☐ Molecule 3 Х IN www Molecule 6 NH Garrow_forwardHighlight each chiral center in the following molecule. If there are none, then check the box under the drawing area. There are no chiral centers. Cl Cl Highlightarrow_forward
- A student proposes the following two-step synthesis of an ether from an alcohol A: 1. strong base A 2. R Is the student's proposed synthesis likely to work? If you said the proposed synthesis would work, enter the chemical formula or common abbreviation for an appropriate strong base to use in Step 1: If you said the synthesis would work, draw the structure of an alcohol A, and the structure of the additional reagent R needed in Step 2, in the drawing area below. If there's more than one reasonable choice for a good reaction yield, you can draw any of them. ☐ Click and drag to start drawing a structure. Yes No ロ→ロ 0|0 G Х D : ☐ பarrow_forwardटे Predict the major products of this organic reaction. Be sure to use wedge and dash bonds when necessary, for example to distinguish between different major products. ☐ ☐ : ☐ + NaOH HO 2 Click and drag to start drawing a structure.arrow_forwardShown below are five NMR spectra for five different C6H10O2 compounds. For each spectrum, draw the structure of the compound, and assign the spectrum by labeling H's in your structure (or in a second drawing of the structure) with the chemical shifts of the corresponding signals (which can be estimated to nearest 0.1 ppm). IR information is also provided. As a reminder, a peak near 1700 cm-1 is consistent with the presence of a carbonyl (C=O), and a peak near 3300 cm-1 is consistent with the presence of an O–H. Extra information: For C6H10O2 , there must be either 2 double bonds, or 1 triple bond, or two rings to account for the unsaturation. There is no two rings for this problem. A strong band was observed in the IR at 1717 cm-1arrow_forward
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