The Micro-Geography of a Home as a Contact Zone: Urban Planning in Fragmented Settler Colonialism

ABSTRACT

This paper provides an analysis of the micro-geography of the village of Lifta, Jerusalem, and the history of one particular home there, applying the archaeology of the address methodology. A new terminology of fragmented settler colonialism is used, in combination with the contact zone concept, to help better understand planning situations ‘after colonial times’. Introducing macro and micro scales of contact zones, the formal texts of the Lifta Regeneration Plan 6036 and the ensuing legal appeals submitted to the Israeli court are analyzed. By also studying the informal contact zone at the micro (address) level, the paradoxical relations between the Mizrahi and the Palestinians are exposed.     

“The Right to Shrine”: Global Celebrity,Colonial Logics,and Local Knowledge in Aspen’s Mountainside Memorials

Abstract

On the mountains surrounding Aspen, Colorado, skiers build shrines dedicated to celebrities, pastimes, and deceased loved ones. Charmed journalists and local promoters describe these shrines as homespun and quaint reminders of the human factor in recreational tourism. As this paper demonstrates, however, these shrines represent a more complex space-marking practice of outdoor alpine culture. Embedded within ski resorts, these Aspen shrines are part of the global spatial products—the banal, familiar, and predictable architectural forms—of a leisure economy that deflect a suspicious gaze. By looking at the shrines as spatial products of a neoliberal global economy, we may come to better understand how materiality creates claims to space. In this capacity the shrines make visible the continuity of settler-colonial logics that facilitate practices of territorial entitlement and accumulation. The shrines challenge us to interrogate the innocence of our objects, and to move beyond surface readings to find what is otherwise obscured.     

减少渣油催化裂化装置的结焦

介绍了清江石化有限公司渣油催化裂化装置反应分馏系统提升管进料喷射区、沉降器顶部、大油气管线、分馏塔底等主要结焦部位的结焦情况，分析了结焦的原因，阐述了为防结焦所采取的一些措施及其效果。     

旋风分离器升气筒穿孔与FCC油浆固含量超标

中国石油天然气股份有限公司大连石化分公司Ⅱ套重油催化裂化装置出现了油浆固含量超标的异常现象,为了找出这一异常现象,对重油催化裂化装置进行了调整操作条件的试验,通过对试验结果的分析,排除了工艺和催化剂方面的原因.装置停工后检查时发现,沉降器内一组旋风分离器升气筒出现了3个漏洞,油浆固含量超标是由这一情况造成的,而漏洞是防焦蒸汽冲刷形成的.因此对漏洞进行了修补,同时对有关防焦蒸汽喷嘴进行了封堵,装置开工后油浆固含量恢复到了正常值.     

催化裂化沉降器结焦的原因及对策

中国石油天然气股份有限公司抚顺石化分公司石油二厂1．5Mt/a重油催化裂化装置自2000年8月开工以来，沉降器内结焦严重，影响了装置的长周期运行。当沉降器内结焦达到一定程度时，如果因其它原因导致切断进料，焦块就会脱落，出现催化剂循环不正常或根本不能建立催化剂循环的现象，被迫停工处理。在分析结焦部位和结焦结构形态。以及大量操作数据的基础上，找出了沉降器内结焦的原因，并提出了相应的对策。     

转炉烟气除尘污水处理新工艺的开发及应用

为了实现炼钢清洁性生产,首次研究开发了“粗颗粒分离机→软化→混凝→改良斜板沉淀器→一体化-浓缩池、污泥泵房→直落式污泥处理”转炉烟气除尘污水处理新工艺。系统采用具有“诸多创新技术”的“改良斜板沉淀器”处理除尘污水,工程投资比普通斜板沉淀器节省15%。应用表明,“改良斜板沉淀器”实现了PLC自动排泥,出水悬浮物含量小于100mg/L。     

O.8 Mt/a重油催化裂化装置汽提器改造

济南分公司0．8Mta重油催化裂化装置应用洛阳石油化工工程公司工程研究院的专利技术．将原反应沉降器汽提段改造成Ⅱ型催化裂化高效汽提器。工业应用结果表明：在汽提蒸汽量下降12％的条件下，焦炭的氢质量分数同比降低了18．3％；再生器烧焦率同比下降了0．5％，每年可少烧焦4000t．获得了较好的经济效益。     

Drop size distribution in a mixer–settler reactor for the gold chloride/DBC system

An experimental investigation was carried out in order to analyze the drop size distributions of liquid–liquid dispersion in a horizontal mixer–settler. Two aqueous chemical systems were studied: synthetic gold solution and gold solution prepared from the leaching of copper anode slimes. The dependency of the drop size distributions on impeller speed, 335–600 rpm, and phase fraction, 0.167–0.54, were studied for gold chloride–DBC system. The Sauter mean diameter, D₃₂, was correlated for both systems in the frame of classical Hinze–Kolmogorov theory. The results showed that, for each volume fraction in the studied range, D₃₂ is decreasing as a power function of Weber number with an exponent equal to −0.73 and −0.65 for leach and synthetic solution, respectively. This corroborates that the mentioned theory may not be the most adequate to correlate drop size diameters, particularly when reaction occurs in the system. Also such a variation of the exponent may be interpreted as a different combination of the continuous phase. However, for both systems studied, correlation to show the effect of reaction on D₃₂ has been represented. By comparing the results, the prediction of mean drop size diameter in the leach solution is possible by using synthetic solution data with AARD <10%.     

The effects of impeller speed and holdup on mean drop size in a mixer settler with spiral‐type impeller

An experimental investigation has been carried out in order to analyse the drop size distributions of liquid–liquid dispersion in a single stage mixer settler extractor. In this paper, the effects of the impeller speed and the holdup on mean drops size, D₃₂, have been investigated. D₃₂ was decreased with an increase in the impeller speed. Furthermore, D₃₂ was increased with an increase in the holdup. In addition, a new and modified correlation was established based on these results. The average absolute relative deviation is 3.36%.