Focus post on August 12, 2009: There are two standard requirements for the design, but I can’t find the basis for them at the moment
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This post was last edited by me108924 on 2009-8-12 at 10:15: 1. Pressure gauges and temperature gauges must be installed at the inlet and outlet of the liquid pump in accordance with relevant regulations. 2. The vent pipe should lead outside, and its height above the ground level of the building(s) must be at least 4.5 meters
Article 2 should be stipulated in the Code for Fire Protection Design of Petrochemical Enterprises: (1) The top of the exhaust pipe for continuously emitted combustible gases, or the vent opening, shall be at least 3.5 m above the roof of platforms or buildings within a radius of 20 m. (2) Intermittently emitted. . . . . . . . . . . . . It should be within a range of 10m higher. . . . . . . Over 3.5m.
Is the first one a liquefied hydrocarbon pump or a self-priming pump? Generally, centrifugal pumps do not require a pressure gauge at the inlet, unless the inlet NPSHA is very low – such as in the case of liquefied hydrocarbons in a saturated state – or in the case of self-priming pumps with a high self-priming height, where attention to the inlet pressure gauge is necessary. An outlet pressure gauge is necessary; it should be used to monitor the pressure when the pump is started, in order to assess its operating condition. Generally, only liquefied hydrocarbon pumps that are in a saturated state require additional attention regarding temperature sensors; centrifugal pumps usually do not need such sensors. 1# zhangzonglin
The top of the exhaust pipe for continuously emitted combustible gases, or the vent opening, shall be at least 3.5 m above the roof of any platform or building within a radius of 20 m.
These two requirements are likely specified in the Code for Fire Protection Design of Petrochemical Enterprises. Please take a look.
The “Code for Fire Protection Design of Petrochemical Enterprises” does indeed contain descriptions on this topic
The second question relates to Clause 5.5.11 of the \"Code for Fire Protection Design of Petrochemical Enterprises\": For combustible gases that, due to process conditions or the properties of the medium, cannot be discharged into a flare or an on-site treatment system, and must instead be released directly into the atmosphere through exhaust stacks or vent pipes, the height of such stacks and vents must comply with the following requirements: 1. The top of the exhaust stack or the outlet of the vent pipe, for continuous discharge, must be at least 3.5 meters above the roofs of platforms or buildings within a 20-meter radius. No platforms or buildings should be located within a 45° upward slope range 20 meters horizontally from the discharge point (Figure 5.5.11)； 2 The top of the exhaust stack or the vent opening for intermittent emissions shall be at least 3.5 m above the roof of any platform or building within a 10-m radius. No platforms or buildings should be located within a 45° upward slope range 10 m horizontally from the emission outlet (Figure 5.5.11) ； 3. The discharge outlet of the safety valve must not face adjacent equipment or areas where people walk; it should be at least 3 meters above the rooftops or platforms within a radius of 8 meters.