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提问人：网友angelppp2008 发布时间：2022-01-07

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脱水流程dewatering process flow操作工艺参数Operating process parameters：（）

A、吸附操作温度：一般＜50℃，否则降低吸附剂的去湿能力。adsorption operating temperature: generally otherwise reduce the adsorbent dehumidification＞ B、吸附操作压力：压力对吸附剂去湿能力影响很小，但应避免压力波动而影响床层的稳定性。Adsorption operating pressure: the pressure has little effect on the desiccant ability of the adsorbent, but the stability of the bed should be avoided due to the pressure fluctuation.

C、吸附剂寿命：决定于吸附剂种类和操作情况，一般1～3年。Adsorbent life: depends on the type of adsorbent and operating conditions, generally 1 to 3 years.

D、再生温度：取决于吸附剂种类，分子筛再生温度200～300℃。Regeneration temperature: depending on the type of adsorbent, the regeneration temperature of molecular sieve is 200 ~ 300℃.

E、再生气流量：约为气体流量的5～15％，太小不足以在规定的时间内把吸附剂提高到规定温度，太大容易使床层松动，降低吸附剂寿命。Gas flow rate: about 5 ~ 15% of the gas flow rate, too small to raise the adsorbent to the specified temperature within the specified time, too large will easily loosen the bed and reduce the life of the adsorbent.

F、冷却终了温度：约50℃。Cooling end temperature: about 50℃.

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更多“脱水流程dewatering process flow操作工艺参数Operating process parameters：（）”相关的问题

第1题

The cash flow received from the firm's assets (operating activities) must equal cash flow to the shareholders.

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第2题

脱水流程dewatering process flow 原理：随温度增加而吸水能力下降。Principle: water absorption capacity decreases with increasing temperature. 设备和工艺流程基本相同。The equipment and process flow are basically the same.

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第3题

The cash flow of the firm is defined as the cash flow of the assets. This cash flow must be equal to

A、cash flow to equity minus cash flow to debtholders.

B、cash flow to debtholders minus cash flow to equity.

C、cash flow to governments plus cash flow to equity.

D、cash flow to equity plus cash flow to debtholders.

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第4题

Work Flow控制Data Flow的逻辑流程，Data Flow定义物理ETL操作

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第5题

The( ) usually appoints a ( ) to take responsibilities for the company's daily operation.

A、Shareholders CEO

B、Board CEO

C、Board CFO

D、Shareholders CFO

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第6题

干燥剂特点比较Comparison of characteristics of desiccant（）

A、硅胶吸附能力很好，但遇液态水极易破碎，处理量大时又会很快失效，所以硅胶适用于处理量小而含水量不大的情况；Silica gel has a good adsorption capacity, but it is easy to be broken in the case of liquid water, and will fail quickly when the amount of treatment is large, so silica gel is suitable for the case of small amount of treatment and little water content;

B、活性氧化铝是较好的干燥剂，但活性丧失较快，特别在酸性气体较多时容易变质，需要经常更换吸附剂，成本也就增高；Activated alumina is a good desiccant, but the activity is lost quickly, especially in the acidic gas more easily deteriorated, often need to replace the adsorbent, the cost will increase;

C、分子筛是高效脱水剂，特别是抗酸性分子筛，能适应含酸性气体较多的天然气的脱水。分子筛特别适用于处理量大，而且要求露点降低幅度大的情况，如天然气液化前的深度脱水，在处理量小、露点降低要求不多的情况下就失去了它的优越性。Molecular sieve is an efficient dehydrating agent, especially acid resistant molecular sieve, which can adapt to the dehydration of natural gas with more acidic gas. Molecular sieve is especially suitable for the case of large treatment capacity and large dewpoint reduction, such as deep dehydration before natural gas liquefaction, but it loses its superiority when the treatment capacity is small and the dewpoint reduction requirement is few.

D、以上都不对

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第7题

天然气长距离输送前必须有效地脱除其中水分。所谓有效地脱除，就是在输送地最高压力和最低温度下，天然气中地水分尚处于不饱和状态。相对湿度为60～70％左右，或者是在输送压力下天然气地露点比最低输送温度低5～10℃左右。Therefore, water must be removed effectively before long distance transportation of natural gas. The so-called effective removal means that at the maximum pressure and minimum temperature of transportation, the moisture in natural gas is still in the unsaturated state. The relative humidity is about 60 ~ 70%, or the dew point of natural gas is about 5 ~ 10℃ lower than the minimum conveying temperature under the conveying pressure.

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第8题

脱水方法的选择原则Principles for selecting dehydration methods（）

A、从露点降低来看，不少方法都能满足管道输气的要求。对天然气液化前的深度脱水，则以分子筛法为最优。From the point of view of dew point reduction, many methods can meet the requirements of pipeline gas transmission. Molecular sieve method is the best method for deep dehydration before natural gas liquefaction.

B、从投资、操作费用和对操作技术的要求来看，液体吸收法——三甘醇法有突出优点，不但投资省，操作费用低，操作技术也不复杂，而且检修容易，能连续运转，易于实现自动化。From the investment, operating costs and requirements for the operation technology, liquid absorption method - triethylene glycol method has outstanding advantages, not only investment savings, low operating costs, operating technology is not complex, and maintenance easy, continuous operation, easy to achieve automation.

C、选择脱水方法还要同集输流程的规划统一考虑。如果净化厂就在集气站附近，集气管道短，先脱硫后脱水，对脱水要求就可低些，符合管输要求即可。此时以三甘醇法为最优。如果大型净化厂距起源较远，需要长距离输送含水、含硫天然气，尤其是输送高含硫天然气时，为了避免含水含硫天然气对管道和设备的腐蚀，须先深度脱水，以抗酸分子筛为最优。The selection of dehydration method should be considered in accordance with the planning of gathering and transportation process. If the purification plant is near the gas collection station, the gas collection pipeline is short, desulfurization and dehydration first, the requirements for dehydration can be lower, meet the requirements of pipeline transportation. The triethylene glycol method is the best method. If large purification plants are far from the origin, they need to transport water-containing and sulfur-bearing natural gas over a long distance, especially when transporting high-sulfur natural gas. In order to avoid the corrosion of water-containing and sulfur-bearing natural gas on pipelines and equipment, deep dehydration is required and acid-resistant molecular sieve is the best.

D、以上都不对

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第9题

三甘醇的优点The advantages of triethylene glycol（）。

A、沸点较高（288℃），再生温度高，贫液浓度可达98%~99%，因而，露点降比二甘醇多13～30℃; The boiling point is high (288℃), the regeneration temperature is high, the concentration of lean liquid can reach 98%~99%, so the dew point drop is 13 ~ 30℃ more than diethylene glycol.

B、蒸气压较低，27℃时仅为二甘醇的20％，因而被天然气携带损失小; The vapor pressure is low, only 20% of diethylene glycol at 27℃, so the loss caused by natural gas is small.

C、热稳定性更好，理论热分解温度为206.7℃，二甘醇为164.4℃; Thermal stability is better, theoretical thermal decomposition temperature is 206.7℃, diethylene glycol is 164.4℃;

D、脱水操作费用比二甘醇低。Dehydration costs are lower than diethylene glycol.

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第10题

降低天然气温度，使部分水蒸气和重烃凝析成液体，与气流分开，从而降低了天然气中的含水量和重烃组分。Lowering the temperature of the natural gas allows some water vapor and heavy hydrocarbons to condense into liquids that are separated from the gas flow, thereby reducing the water content and heavy hydrocarbon components in the natural gas.

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