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The quality of water used in the purification of linter pulp exerts a decisive influence on the iron content of the product. Laboratory results show theft the absorption of trivalent iron by de-ashed cellulose possesses the character of surface absorption and obeys Freundlich's equation. At the some concentration, the amount of bivalent iron absorbed is far less than trivalent iron; the mechanism of absorption is also quite different. Based on these informations, proposals aro made for reasonably controlling...

The quality of water used in the purification of linter pulp exerts a decisive influence on the iron content of the product. Laboratory results show theft the absorption of trivalent iron by de-ashed cellulose possesses the character of surface absorption and obeys Freundlich's equation. At the some concentration, the amount of bivalent iron absorbed is far less than trivalent iron; the mechanism of absorption is also quite different. Based on these informations, proposals aro made for reasonably controlling the iron content of the purified linter pulp.

水質对于精煉棉漿含铁量的高具有决定性的影响。实驗室結果显示,高铁纖維素所吸收系表面吸附性質,且遵从Freundlich吸附规律。在同一濃度时,鉄的吸收量远较高鉄为小,机理也不同。这些資料对合理控制精煉棉漿的含鉄量頗有帮助。

Experiments were carried out in two separate sieve-plate towers with three and five plates each respectively. Hydrogen sulfide in coal gas. was found highly absorbed in those towers by lime suspension in the range of relatively high gas velocity with the suspension reaching stage of foaming. Results show that both the average height of foam (H) and the mass transfer coefficient (K) are proportional to gas velocity in tower (W) and relative quantity of lime suspension (1), expressing in liters per cubic meter...

Experiments were carried out in two separate sieve-plate towers with three and five plates each respectively. Hydrogen sulfide in coal gas. was found highly absorbed in those towers by lime suspension in the range of relatively high gas velocity with the suspension reaching stage of foaming. Results show that both the average height of foam (H) and the mass transfer coefficient (K) are proportional to gas velocity in tower (W) and relative quantity of lime suspension (1), expressing in liters per cubic meter of coal gas, in definite mathematical relationship. Under definite conditions, absorption of H_2S reaches over 90%. Results also show in the absorption process, CO_2 of coal gas is being only slightly absorbed. Comparing with Thylox and iron-soda processes, the cost for sulfur removal of coal gas in each case is approximately the same. However, the present process actually has distinct advantages over the others in low capital cost, requiring less steel, process being simpler and absorbent being easily obtainable. The disadvantages pertaining to the present process are lime suspension being not fully reacted and utilization of the used suspension being difficult. The present process is being recommended to be applicable to sulfur removal of coal gas from generators of medium size and also in preliminary stage of sulfur removal of synthesis gas.

以便宜易得的石灰乳为脫硫剂。采用泡沫法,在装有五块和三块篩板塔中,对煤气进行了强化脱硫試驗。由試驗結果得出塔板上泡沫的平均高度H以及传貭系数K分別与煤气空塔流速W和石灰乳比用量l(每米~3煤气所用的石灰乳升数)相互关系的数学公式。在一定条件下,脫硫效率可达90%以上,試驗結果还指出脫硫过程中CO_2被吸收的量很小。本法在工业上应用时,如与砷碱法或鉄碱法相比,成本不相上下,但是本法具有基建投資,鋼材用量少、工艺流程簡单和原料易得等优点,缺点是石灰乳的利用率不高,用过的石灰乳的处理較困难。对于中小型企业的燃料煤气的脫硫以及合成煤气的第一段脱硫,本法值得推广使用。

Poyu, a county of China, in the southerh neighbourhood of Canton,

番禺县系广东省蔗糖生产的重要地区,本文就广东番愚蔗田与糖厂配置关系作一探讨。一、番禺县甘蔗生产及制糖工业的条件。本县属南亚热带范围,霜期短,雨量足,平原占土地面积十分之八,土壤肥沃,河网交错,电动排灌站遍布全境,基本无旱涝。但沿珠江河口区受台风和咸潮威胁。蔗糖生产历史攸久,劳力充裕,制糖工业发达,粮食丰裕,运输十分便利。二、番禺县蔗田与糖厂配置现状与问题。蔗田分布全县,但较集中在高、中沙田及糖厂附近地区。近年,建排灌站后,易涝的沙田,围田及易旱的岗地,蔗田均有所扩展,产量大为增加。糖厂分布的主要问题是南部糖厂小,未能满足甘蔗发展需要,部分甘蔗外调,运距过大,而本地糖厂延长榨季,影响农业季节和劳动力安排,这是粮,蔗丰收后提出的新问题. 三、番禺县蔗田发展与糖厂合理配置的初步探讨。作者认为:可从禺北扩大灌溉面积,推广甘蔗花生间种;禺南推行稻蔗轮作发展蔗田。合理划分糖厂供蔗区,减少甘蔗对流现象。增加宿根庶和早熟种比例,使糖厂提早开榨,在南部建厂、扩厂,以适应甘蔗发展的需要。

 
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