TGIC副产物在热熔胶黏剂中的应用

添加了抗氧化剂的TGIC副产物经蒸馏,得到较纯净的副产物,并将其与热熔胶黏剂按一定比例混合,得到一种复合胶黏剂.分析了副产物与热熔胶黏剂的配比对持黏性、T—剥离强度、180°剥离强度、软化点、熔融黏度的影响.当TGIC副产物与热熔胶黏剂的配比为2∶8时,所制备胶黏剂的主要力学、理化指标仍能满足家具封边、胶订等领域的行业...     

我国电炉制磷副产物综合利用概要

介绍了我国电炉制磷生产概况,阐述了电炉制磷生产中副产物的综合利用情况,指出了一些黄磷生产厂的环境污染相当严重,建议加强三废治理,进一步开展电炉制磷副产物的综合利用,开发新产品,降低黄磷生产成本,提高经济效益和社会效益,消除环境污染,落实安全生产措施。     

氯化氢生产装置运行总结

介绍二合一副产蒸汽HCI合成炉的技术特点、生产过程中存在的问题及优化措施.     

无灰分散剂副产盐酸的汽提精制实验报告

以瓷质拉西环为填料,采用空塔线速度００５～０１５ｍ／ｓ,汽提温度７０～８０℃,气液（体积）比为１３０∶１～１６０∶１的操作条件下,可使无灰分散剂副产盐酸中２－氯－２－甲基丙烷等有机物杂质含量从１５×１０－４脱除到（１２±３）×１０－６,脱除率达９０％以上。     

高性能混凝土专用辅料PNF的研究开发

试验研究表明,用以粉煤灰为基料,复合矿渣粉、富钙矿粉等工业废料而成高性能混凝土专用辅料,具有拌合物工作性能好、坍落度损失小、早期抗压强度不降低等许多优点,可大量消耗工业废料,节约水泥,降低工程成本,具有很好的经济和社会意义。     

二合一副产蒸汽氯化氢合成炉运行总结

介绍了二合一副产蒸汽氯化氢合成炉的工艺流程、运行特点及效益分析,实践证明,二合一副产蒸汽炉具有先进性、经济性及实用性。     

铬铁渣集料的特性及其作为绿色混凝土材料的应用综述

铬铁渣（FCS）在从天然矿物中提取铬铁的过程中产生,由于其化学成分、物理性质和机械性能,被用作替代的绿色建筑材料,特别是作为混凝土骨料,引起了人们的兴趣。本文综述FCS的物理、化学和力学特性,探讨FCS作为细骨料和粗骨料在绿色混凝土生产中的利用。研究发现,FCS集料的物理力学性能普遍优于常规集料。然而,在不同的研究中,使用FCS细骨料对混凝土力学性能和耐久性的影响并不一致。此外,应严格评估含FCS混凝土在多种环境条件下的长期安全性和环境相容性。     

The effect of by-product inclusion and concentrate feeding rate on milk production and composition,pasture dry matter intake,and nitrogen excretion of mid-late lactation spring-calving cows grazing a perennial ryegrass-based pasture

Interest is growing in the use of by-products as economical sources of nutrients that complement grazed grass, particularly at times when grass supply is insufficient to meet the nutritional demands of lactating dairy cattle. The objective of this research was to assess the effect of the amount of by-product inclusion and concentrate feeding rate on pasture dry matter intake, milk production and composition, and N excretion from spring-calving cows grazing summer pasture during mid-late lactation. Forty-eight Holstein Friesian dairy cows were randomly assigned to 1 of 4 dietary treatments in a 2 × 2 factorial design. Cows were grazed in one group on a perennial ryegrass-based sward, with pelleted concentrates offered twice daily during milking over a 63-d experimental period. The dietary treatments were 3 kg of concentrate containing 35% by-products; 6 kg of concentrate containing 35% by-products; 3 kg of concentrate containing 95% by-products; and 6 kg of concentrate containing 95% by-products on a fresh matter basis. The by-products used were soybean hulls, palm kernel expeller, and maize dried distillers grains with solubles, included in equal proportions on a dry matter basis. Pasture dry matter intake (14.5 kg/d) was not affected by the amount of by-product inclusion or feeding rate. By-product inclusion had no effect on milk yield (27.1 kg/d) or milk solids (MS) yield (2.0 kg/d). Cows offered 6 kg of concentrate had a greater milk (+1.6 kg/d) and MS (+0.13 kg/d) yield, consumed more N (+0.08 kg/d), and excreted a lower proportion of N in the milk (0.25 vs. 0.27) and feces (0.39 vs. 0.41) and a higher proportion in the urine (0.39 vs. 0.32) compared with cows offered 3 kg of by-product-based concentrate. In conclusion, by-products can be included at up to 95% of the concentrate fed to cows grazing pasture without affecting pasture dry matter intake, milk production or composition, or N excretion. Cows offered 6 kg of concentrates produced more milk and MS than cows offered 3 kg but had higher urinary N excretion. Economics of this yield response will depend on milk and concentrate prices.     

Incorporation of fish by-product into the semi-continuous anaerobic co-digestion of pre-treated lignocellulose and cow manure,with recovery of digestate's nutrients

Norway's fish processing industry generates large amounts of fish waste every year. The high-risk waste fraction with most of its oil removed has not yet been tested for energy production. The stability of an anaerobic digestion process that incorporates this material with steam exploded Salix and cow manure was tested using mesophilic, semi-continuous laboratory-scale digesters. The effects of recycling the liquid digestate fraction were also investigated. The removal of ammonium (NH₄⁺) and phosphate (PO₄³⁻) from the rejected digestate using struvite precipitation and bentonite adsorption were tested to generate a nutrient-enriched, final solid fertiliser. Adding 20% fish by-product (volatile solids basis) increased methane yields by 35%, while recycling the digestate caused a slight increase. The NH₄⁺–N levels reached 4–5 g l⁻¹ in the reactors with recirculation and fish feed. Although these levels may threaten methanogenesis, the stability of the process was maintained during the entire period due to the good balance between the lignocellulose, proteins and fats provided by the co-digestion mixture and the positive effects of recirculation. The NH₄⁺ and PO₄³⁻ were successfully removed from the rejected liquid digestate. The reductions using struvite reached 87% and 60% (pH 9.5 and Mg²⁺:NH₄⁺:PO₄³⁻ ratio of 1.2:1:1), while bentonite achieved 82% and 52%, respectively.     

电解碱法非木材纤维原料黑液减少有机污染回收副产品

在大多数造纸厂,黑液进行浓缩后在碱回收炉中燃烧。回收熔融的无机化学品,在纸厂中再次利用。近期,开发出一种比碱回收炉更高效的方法——