Gas generation workshop job training question bank

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Question Bank for Position Training in the Gas Production Workshop – Shift Change I. Fill-in-the-blank section: 1. Plant-controlled indicators for gas composition: CO content in medium-pressure transformed gas ≤ 3.5%; CO content in low-pressure transformed gas ≤ 0.4%; total sulfur content at the outlet of the ZNO desulfurization tank ≤ 1 mg/m3, and the CO + CO2 content in the refined gas ≤ 20 PPM. 2. Plant-controlled indicator for the hotspot temperature in each catalyst bed: 480±10°C in the early stage of medium conversion, and 500±10°C in the later stage℃ ； Early stage of low-temperature transformation: 210±5°C; middle stage: 225±5°C; late stage: 240±5°C℃ ； Methanation ≤380°C. 3 Transformation of various catalyst models: Medium transformation B107, B112 ； Low-variation B202; zinc oxide desulfurizer T302 ； Methylation J101. 4 Change the shape and color of each catalyst: B107, brown flaky shape ； B202 black cylindrical ； T302 grayish-white balls ； J101 is grayish-black and cylindrical in shape. 5 Transformation of various catalyst poisons: B107: S, P, arsenic, Cl, HCN acids ； T302: Arsenic, acids, oil stains ； B202: S, CI, unsaturated hydrocarbons, hydrocarbons ； J101: Arsenic, alkalis, chlorine, unsaturated hydrocarbons. 6 The main components of medium-temperature catalysts are Fe2O3, Cr2O3, K2O, MgO ； The active component is Fe2O3. The contents of various components are as follows: Fe2O3: 70–78%, Cr2O3: 10–12%, K2O: 0.4–0.6%, MgO: 0.8–1.2%. The main components of the low-temperature B202 catalyst are CuO, ZnO, and Al2O3; the active component is CuO, the interlayer material is ZnO, and the carrier is Al2O3. Contents of various components: CuO: >29%, ZnO: 41–45%, Al2O3: 8.4–10%. 8 The main components of the T302 desulfurization agent are ZnO, MgO, and MnO2. 9 The main components of the J101 methanation catalyst are NiO and Al2O3; the active component is NiO while the carrier is Al2O3, with NiO accounting for ≥21% and Al2O3 accounting for 42-46%. 10 For the medium-temperature B107 catalyst, the optimal operating temperature ranges from 400–475°C, with a maximum of 520°C. During the reduction phase, the temperature should be controlled at 300°C, and it should not exceed 475°C. During the passivation phase, the temperature should be kept at 350°C, with a maximum of 450°C. Control CO concentration in the early stage of reduction