Disclosed is an apparatus for conversion of ammonia into oxides of nitrogen which may comprise an adiabatic burner (108), a set of platinum/rhodium alloy catalytic gauzes (102A), (102B), and (102C), a waste heat recovery boiler (WHRB) (110), an absorption tower (302A), (302B), (302C), (302D) and (302E), a NaOH tank (306) and a surge tank (304). Further, the adiabatic burner may be configured to carry out catalytic oxidation of air and ammonia, using catalytic gauzes (102A), (102B), and (102C) of platinum/rhodium alloy. Further, the mixture of air and ammonia may be selectively oxidized to oxides of nitrogen, which may be absorbed in an alkali medium in the absorption tower (302A), (302B), (302C), (302D) and (302E), to yield sodium nitrites and nitrates.

The present invention relates to the adsorbent for separating organochloride compound from liquid hydrocarbon and a process thereof, wherein said adsorbent is the silica and aluminosilicate composite having infiltrate structure subjected to the modification of the surface property with small metal having high electronegativity.

A system optionally including a carbon oxide reactor. A method for carbon oxide reactor control, optionally including selecting carbon oxide reactor aspects based on a desired output composition, running a carbon oxide reactor under controlled process conditions to produce a desired output composition, and/or altering the process conditions to alter the output composition.

Process for converting waste plastics to refining feedstock. The process includes conducting pyrolysis of a plastic feedstock comprising waste plastics to produce a liquid stream of plastic pyrolysis oil; directly feeding the liquid stream of plastic pyrolysis oil to an adsorption based purification process to generate a treated plastic pyrolysis oil stream; and collecting the treated plastic pyrolysis oil stream from the adsorption vessel for further processing into value added products as a feedstock for conventional refining processes. The adsorption based purification process includes contacting the liquid stream of plastic pyrolysis oil with one or more adsorbent materials in an adsorption vessel, the adsorbent materials with at least one of the one or more adsorbent materials being configured for adsorption of organic molecules having heteroatoms of each of sulfur, nitrogen, oxygen, and chlorine. Such system may be integrated with a conventional refinery.

The invention relates to a co-pyrolyzed sludge biochar modified by lanthanum carbonate, a preparation method and a use thereof. The method comprises: adding a co-pyrolyzed sludge biochar into a metal salt solution of lanthanum ions, heating and adding a carbonate solution until the pH is 8 to 9, and standing still at a constant temperature, and separating to obtain a co-pyrolyzed sludge biochar modified by lanthanum carbonate, the sludge biochar is prepared by co-pyrolysis of sludge and bamboo. The co-pyrolyzed sludge biochar modified by lanthanum carbonate prepared by the present invention can effectively adsorb and remove phosphate in water due to containing the lanthanum carbonate with strong affinity for anions and a larger specific surface area.

An adsorbent consisting of iron oxyhydroxide, having a high adsorption rate and high adsorption efficiency compared with conventional products. The adsorbent particle is an adsorbent particle having a crystal structure of β-iron oxyhydroxide, having an average crystallite diameter of 10 nm or less as measured by X-ray diffraction, wherein 90% or more of volume of adsorbent particle is constituted of granular crystals having crystal particle diameter of 20 nm or less, or columnar crystals having width of 10 nm or less and length of 30 nm or less. The adsorbent particle have at least either of the following characteristics: (A) the adsorbent particle contains metal element other than iron in amount of 0.1 to 20% by mass with respect to iron element, or (B) the adsorbent particle contains sulfur oxoacid ions in an amount of 0.01 to 20% by mass in terms of sulfur element with respect to iron element.

The present invention is in relation to a process for preparing calcium phosphate-based sulfated adsorbents that capture mercury in gas streams, comprised of the steps of synthesis of the precursors, incorporation of a transition metal, and sulfation of the material. These adsorbents present high efficiency both for removal of low concentrations of mercury, such as in natural gas, and for stabilization of this pollutant. The adsorbents obtained in the invention may be used in the Mercury Removal Units (MRUs) present in natural gas processing plants, which mercury removal units may be located either upstream or downstream of the dehydration and H.sub.2S removal units, due to the adsorbents obtained showing resistance to H.sub.2S poisoning, and maintaining their performance in the presence of water.

An example method of removing hydrogen sulfide from an input gas includes exposing an adsorbent material to an input gas to obtain an output gas. A concentration of hydrogen sulfide of the output gas is less than a concentration of hydrogen sulfide of the input gas. The adsorbent material includes copper oxide, magnesium oxide, and aluminum oxide. An atomic ratio of copper to magnesium to aluminum of the adsorbent material is X:Y:Z, where X is greater than or equal to 0.6 and less than or equal to 0.9, where Y is greater than or equal to 0 and less than or equal to 0.2, where Z is greater than or equal to 0 and less than or equal to 0.2, and where X+Y+Z is equal to 1.

The present disclosure relates to hydrocarbon emission control systems. More specifically, the present disclosure relates to substrates coated with hydrocarbon adsorptive coating compositions and evaporative emission control systems for controlling evaporative emissions of hydrocarbons from motor vehicle engines and fuel systems.

Providing a surface molecularly imprinted magnetic nanomaterial of salvianolic acid A, a preparation method therefor and use thereof. The nanomaterial is obtained by using ferroferric oxide nanoparticles as a core, salvianolic acid A as a template molecule, 4-acryloyloxy phenylboronic acid, vinyl imidazole and methacryloylpropyl trimethyl ammonium chloride as copolymerization functional monomers, bismethylene acrylamide as a cross-linking agent, and azoamidine initiator V50 as an initiator, synthesizing surface imprinted magnetic material containing template molecules by surface polymerization, and finally eluting the template molecule with 0.1 M HCl. It is a spherical particle with a core-shell structure of about 250 nm, with positive charge on the surface and strong hydrophilicity, which can be recycled. Moreover, this magnetic material is easy to be separated by a magnet. The surface molecularly imprinted magnetic nanomaterial prepared by the present application can be used for rapid, large-capacity and high-selectivity separation and enrichment of salvianolic acid A.