The invention discloses novel diesel fuel compositions including a renewable paraffinic diesel component, a fossil diesel component and an oxygenate component, as well as methods for manufacture and use of a combination of a renewable paraffinic diesel component, and an oxygenate component for reducing NOx emissions.

The invention discloses novel diesel fuel compositions including a renewable paraffinic diesel component, a fossil diesel component and an oxygenate component, as well as methods for manufacture and use of a combination of a renewable paraffinic diesel component, and an oxygenate component for reducing NOx emissions.

The present disclosure relates to a composition that includes a compound having the structure R.sub.1O(CH.sub.2O).sub.nR.sub.2 and a cetane number between about 65 and about 100, where n is between 1 and 10, inclusively, R.sub.1 includes a first alkyl group, and R.sub.2 includes a second alkyl group.

The present disclosure relates to a composition that includes a compound having the structure R.sub.1O(CH.sub.2O).sub.nR.sub.2 and a cetane number between about 65 and about 100, where n is between 1 and 10, inclusively, R.sub.1 includes a first alkyl group, and R.sub.2 includes a second alkyl group.

A method can include: mixing two or more feedstocks to produce a distillate product; optionally adding a cetane improver to the distillate product; collecting the distillate product in a tank; extracting a distillate product sample from the distillate product after mixing and before collecting in the tank; measuring a derived cetane number and/or a indicated cetane number (DCN/ICN) for the distillate product sample with an online DCN/ICN analyzer; communicating the DCN/ICN to a plant distributed control system; calculating an integrated DCN/ICN for the cumulative distillate product in the tank based on the measured DCN/ICN, previously measured DCN/ICN for portions of the distillate product in the tank, and process variables related to the mixing and cetane improver; and adjusting one or more of the process variables based on the integrated DCN/ICN.

A method can include: mixing two or more feedstocks to produce a distillate product; optionally adding a cetane improver to the distillate product; collecting the distillate product in a tank; extracting a distillate product sample from the distillate product after mixing and before collecting in the tank; measuring a derived cetane number and/or a indicated cetane number (DCN/ICN) for the distillate product sample with an online DCN/ICN analyzer; communicating the DCN/ICN to a plant distributed control system; calculating an integrated DCN/ICN for the cumulative distillate product in the tank based on the measured DCN/ICN, previously measured DCN/ICN for portions of the distillate product in the tank, and process variables related to the mixing and cetane improver; and adjusting one or more of the process variables based on the integrated DCN/ICN.

The present invention discloses a process for enhancing quality of a hydrocarbon stream. More particularly, the present invention discloses a process for improvement of the combustion quality of a diesel range stream by dissolving an oxygen source in the feed stream before carrying out the oxidation, thereby enhancing the Cetane number, lubricity and reducing emission of the stream. The present invention also discloses a process for enhancing combustion quality of a hydrocarbon stream by carrying out the process in presence of an organometallic catalyst.

The present invention discloses a process for enhancing quality of a hydrocarbon stream. More particularly, the present invention discloses a process for improvement of the combustion quality of a diesel range stream by dissolving an oxygen source in the feed stream before carrying out the oxidation, thereby enhancing the Cetane number, lubricity and reducing emission of the stream. The present invention also discloses a process for enhancing combustion quality of a hydrocarbon stream by carrying out the process in presence of an organometallic catalyst.

The goal of the invention is a mixture of liquid fuels for boilers or diesel engines with particular chain length esters and alkanes, and use thereof for reducing particle and nitrogen oxide emissions during operation of the boilers or diesel engines.

The goal of the invention is a mixture of liquid fuels for boilers or diesel engines with particular chain length esters and alkanes, and use thereof for reducing particle and nitrogen oxide emissions during operation of the boilers or diesel engines.