Hydrochloric acid absorbers are manufactured using___________________?
Show answer Hide answer
Answer: C. Karbate
Explanation
Karbate is an impervious graphite material that exhibits exceptional chemical resistance to hydrochloric acid. It combines the thermal conductivity of graphite with resin impregnation to prevent corrosive acid fluid leakage. This makes Karbate the preferred material for constructing absorption columns used in hydrochloric acid production. Hydrochloric acid is a highly corrosive aqueous solution of hydrogen chloride gas used widely in chemical industries. Impervious graphite is manufactured by treating porous graphite with synthetic resins to block fluid permeability. Absorption towers dissolve hydrogen chloride gas into water, generating substantial heat that requires efficient removal.
Chemical manufacturing plants use Karbate heat exchangers and absorbers to handle corrosive acid streams safely. Using impervious graphite prevents metallic corrosion and eliminates iron contamination in high-purity acid products. Proper material specification ensures long operational lifespans for absorption equipment operating in acidic environments. Cast iron corrodes rapidly when exposed to hydrochloric acid and is unsuitable for acid absorption equipment. Mild steel suffers from severe hydrogen evolution corrosion and would dissolve quickly in hydrochloric acid streams. Stainless steel is susceptible to stress corrosion cracking and pitting when exposed to concentrated hydrochloric acid.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
Related questions
Q1. Face-centered cubic lattices contain how many molecules per unit cell?
Show answer Hide answer
Answer: B. 4
A face-centered cubic unit cell contains a net total of four lattice atoms. Atoms located at the eight corners contribute one eighth to each of eight adjacent cells. Atoms positioned on the six faces contribute one half...
Q2. Hot working procedures for lead are conducted at_________________?
Show answer Hide answer
Answer: D. Room temperature
Lead possesses an unusually low melting point of three hundred twenty-seven degrees Celsius among structural metals. Its recrystallization temperature sits well below standard ambient room temperature conditions. Consequ...
Q3. Body-centered cubic crystal systems contain how many atoms per unit cell?
Show answer Hide answer
Answer: D. 2
A body-centered cubic unit cell contains a net total of two atoms per cell. Corner atoms contribute a combined total of one atom divided among adjacent unit cells. The single atom located precisely in the center contribu...
Q4. Shipment of hydrocyanic acid must avoid______________?
Show answer Hide answer
Answer: A. Cast iron vessels
Cast iron is reactive and structurally brittle, making it entirely unsuitable for containing hazardous hydrocyanic acid. Handling toxic hydrocyanic acid requires containment vessels that are completely free of surface de...
Q5. High-speed steel tools maintain structural hardness up to a threshold of _____________ °C?
Show answer Hide answer
Answer: C. 900
High-speed steel contains alloying elements that form stable wear-resistant carbides. These carbide structures prevent thermal softening at high machining temperatures. Cutting tools maintain structural integrity and har...
Q6. High-speed steel must possess a high level of___________________?
Show answer Hide answer
Answer: D. Both B. & C.
High-speed steel tools must resist abrasive wear against fast-moving metal workpieces during cutting operations. Simultaneously, they require high hardenability to ensure uniform microstructural transformation throughout...